root / xseg / peers / user / mt-mapperd.c @ 2979e589
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| 1 |
#include <stdio.h> |
|---|---|
| 2 |
#include <unistd.h> |
| 3 |
#include <sys/types.h> |
| 4 |
#include <pthread.h> |
| 5 |
#include <xseg/xseg.h> |
| 6 |
#include <peer.h> |
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#include <time.h> |
| 8 |
#include <xtypes/xlock.h> |
| 9 |
#include <xtypes/xhash.h> |
| 10 |
#include <xseg/protocol.h> |
| 11 |
#include <sys/stat.h> |
| 12 |
#include <fcntl.h> |
| 13 |
#include <gcrypt.h> |
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#include <errno.h> |
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#include <sched.h> |
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#include <sys/syscall.h> |
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|
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GCRY_THREAD_OPTION_PTHREAD_IMPL; |
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#define MF_LOAD (1 << 0) |
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#define MF_EXCLUSIVE (1 << 1) |
| 21 |
#define MF_FORCE (1 << 2) |
| 22 |
|
| 23 |
#define SHA256_DIGEST_SIZE 32 |
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/* hex representation of sha256 value takes up double the sha256 size */
|
| 25 |
#define HEXLIFIED_SHA256_DIGEST_SIZE (SHA256_DIGEST_SIZE << 1) |
| 26 |
|
| 27 |
#define block_size (1<<22) //FIXME this should be defined here? |
| 28 |
#define objectsize_in_map (1 + XSEG_MAX_TARGETLEN) /* transparency byte + max object len */ |
| 29 |
#define mapheader_size (SHA256_DIGEST_SIZE + (sizeof(uint64_t)) ) /* magic hash value + volume size */ |
| 30 |
|
| 31 |
#define MF_OBJECT_EXIST (1 << 0) |
| 32 |
#define MF_OBJECT_COPYING (1 << 1) |
| 33 |
#define MF_OBJECT_WRITING (1 << 2) |
| 34 |
#define MF_OBJECT_DELETING (1 << 3) |
| 35 |
#define MF_OBJECT_DELETED (1 << 4) |
| 36 |
#define MF_OBJECT_DESTROYED (1 << 5) |
| 37 |
|
| 38 |
#define MF_OBJECT_NOT_READY (MF_OBJECT_COPYING|MF_OBJECT_WRITING|MF_OBJECT_DELETING)
|
| 39 |
|
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char *magic_string = "This a magic string. Please hash me"; |
| 41 |
unsigned char magic_sha256[SHA256_DIGEST_SIZE]; /* sha256 hash value of magic string */ |
| 42 |
char zero_block[HEXLIFIED_SHA256_DIGEST_SIZE + 1]; /* hexlified sha256 hash value of a block full of zeros */ |
| 43 |
|
| 44 |
//dispatch_internal mapper states
|
| 45 |
enum mapper_state {
|
| 46 |
ACCEPTED = 0,
|
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WRITING = 1,
|
| 48 |
COPYING = 2,
|
| 49 |
DELETING = 3,
|
| 50 |
DROPPING_CACHE = 4
|
| 51 |
}; |
| 52 |
|
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typedef void (*cb_t)(struct peer_req *pr, struct xseg_request *req); |
| 54 |
|
| 55 |
struct map_node {
|
| 56 |
uint32_t flags; |
| 57 |
uint32_t objectidx; |
| 58 |
uint32_t objectlen; |
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char object[XSEG_MAX_TARGETLEN + 1]; /* NULL terminated string */ |
| 60 |
struct map *map;
|
| 61 |
uint32_t ref; |
| 62 |
uint32_t waiters; |
| 63 |
st_cond_t cond; |
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}; |
| 65 |
|
| 66 |
#define MF_MAP_LOADING (1 << 0) |
| 67 |
#define MF_MAP_DESTROYED (1 << 1) |
| 68 |
#define MF_MAP_WRITING (1 << 2) |
| 69 |
#define MF_MAP_DELETING (1 << 3) |
| 70 |
#define MF_MAP_DROPPING_CACHE (1 << 4) |
| 71 |
#define MF_MAP_EXCLUSIVE (1 << 5) |
| 72 |
#define MF_MAP_OPENING (1 << 6) |
| 73 |
#define MF_MAP_CLOSING (1 << 7) |
| 74 |
|
| 75 |
#define MF_MAP_NOT_READY (MF_MAP_LOADING|MF_MAP_WRITING|MF_MAP_DELETING|\
|
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MF_MAP_DROPPING_CACHE|MF_MAP_OPENING) |
| 77 |
|
| 78 |
#define wait_on_pr(__pr, __condition__) \
|
| 79 |
while (__condition__){ \
|
| 80 |
ta--; \ |
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__get_mapper_io(pr)->active = 0;\
|
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XSEGLOG2(&lc, D, "Waiting on pr %lx, ta: %u", pr, ta); \
|
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st_cond_wait(__pr->cond); \ |
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} |
| 85 |
|
| 86 |
#define wait_on_mapnode(__mn, __condition__) \
|
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while (__condition__){ \
|
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ta--; \ |
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__mn->waiters++; \ |
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XSEGLOG2(&lc, D, "Waiting on map node %lx %s, waiters: %u, ta: %u", __mn, __mn->object, __mn->waiters, ta); \
|
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st_cond_wait(__mn->cond); \ |
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} |
| 93 |
|
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#define wait_on_map(__map, __condition__) \
|
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while (__condition__){ \
|
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ta--; \ |
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__map->waiters++; \ |
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XSEGLOG2(&lc, D, "Waiting on map %lx %s, waiters: %u, ta: %u", __map, __map->volume, __map->waiters, ta); \
|
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st_cond_wait(__map->cond); \ |
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} |
| 101 |
|
| 102 |
#define signal_pr(__pr) \
|
| 103 |
do { \
|
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if (!__get_mapper_io(pr)->active){\
|
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ta++; \ |
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XSEGLOG2(&lc, D, "Signaling pr %lx, ta: %u", pr, ta); \
|
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__get_mapper_io(pr)->active = 1;\
|
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st_cond_signal(__pr->cond); \ |
| 109 |
} \ |
| 110 |
}while(0) |
| 111 |
|
| 112 |
#define signal_map(__map) \
|
| 113 |
do { \
|
| 114 |
if (__map->waiters) { \
|
| 115 |
ta += 1; \
|
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XSEGLOG2(&lc, D, "Signaling map %lx %s, waiters: %u, ta: %u", __map, __map->volume, __map->waiters, ta); \
|
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__map->waiters--; \ |
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st_cond_signal(__map->cond); \ |
| 119 |
} \ |
| 120 |
}while(0) |
| 121 |
|
| 122 |
#define signal_mapnode(__mn) \
|
| 123 |
do { \
|
| 124 |
if (__mn->waiters) { \
|
| 125 |
ta += __mn->waiters; \ |
| 126 |
XSEGLOG2(&lc, D, "Signaling map node %lx %s, waiters: %u, ta: %u", __mn, __mn->object, __mn->waiters, ta); \
|
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__mn->waiters = 0; \
|
| 128 |
st_cond_broadcast(__mn->cond); \ |
| 129 |
} \ |
| 130 |
}while(0) |
| 131 |
|
| 132 |
|
| 133 |
struct map {
|
| 134 |
uint32_t flags; |
| 135 |
uint64_t size; |
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uint32_t volumelen; |
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char volume[XSEG_MAX_TARGETLEN + 1]; /* NULL terminated string */ |
| 138 |
xhash_t *objects; /* obj_index --> map_node */
|
| 139 |
uint32_t ref; |
| 140 |
uint32_t waiters; |
| 141 |
st_cond_t cond; |
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}; |
| 143 |
|
| 144 |
struct mapperd {
|
| 145 |
xport bportno; /* blocker that accesses data */
|
| 146 |
xport mbportno; /* blocker that accesses maps */
|
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xhash_t *hashmaps; // hash_function(target) --> struct map
|
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}; |
| 149 |
|
| 150 |
struct mapper_io {
|
| 151 |
volatile uint32_t copyups; /* nr of copyups pending, issued by this mapper io */ |
| 152 |
xhash_t *copyups_nodes; /* hash map (xseg_request) --> (corresponding map_node of copied up object)*/
|
| 153 |
struct map_node *copyup_node;
|
| 154 |
volatile int err; /* error flag */ |
| 155 |
volatile uint64_t del_pending;
|
| 156 |
uint64_t delobj; |
| 157 |
uint64_t dcobj; |
| 158 |
cb_t cb; |
| 159 |
enum mapper_state state;
|
| 160 |
volatile int active; |
| 161 |
}; |
| 162 |
|
| 163 |
/* global vars */
|
| 164 |
struct mapperd *mapper;
|
| 165 |
|
| 166 |
void print_map(struct map *m); |
| 167 |
|
| 168 |
/*
|
| 169 |
* Helper functions
|
| 170 |
*/
|
| 171 |
|
| 172 |
static inline struct mapperd * __get_mapperd(struct peerd *peer) |
| 173 |
{
|
| 174 |
return (struct mapperd *) peer->priv; |
| 175 |
} |
| 176 |
|
| 177 |
static inline struct mapper_io * __get_mapper_io(struct peer_req *pr) |
| 178 |
{
|
| 179 |
return (struct mapper_io *) pr->priv; |
| 180 |
} |
| 181 |
|
| 182 |
static inline uint64_t calc_map_obj(struct map *map) |
| 183 |
{
|
| 184 |
if (map->size == -1) |
| 185 |
return 0; |
| 186 |
uint64_t nr_objs = map->size / block_size; |
| 187 |
if (map->size % block_size)
|
| 188 |
nr_objs++; |
| 189 |
return nr_objs;
|
| 190 |
} |
| 191 |
|
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static uint32_t calc_nr_obj(struct xseg_request *req) |
| 193 |
{
|
| 194 |
unsigned int r = 1; |
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uint64_t rem_size = req->size; |
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uint64_t obj_offset = req->offset & (block_size -1); //modulo |
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uint64_t obj_size = (rem_size + obj_offset > block_size) ? block_size - obj_offset : rem_size; |
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rem_size -= obj_size; |
| 199 |
while (rem_size > 0) { |
| 200 |
obj_size = (rem_size > block_size) ? block_size : rem_size; |
| 201 |
rem_size -= obj_size; |
| 202 |
r++; |
| 203 |
} |
| 204 |
|
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return r;
|
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} |
| 207 |
|
| 208 |
/*
|
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* Maps handling functions
|
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*/
|
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//FIXME assert targetlen > 0
|
| 212 |
|
| 213 |
|
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static struct map * find_map(struct mapperd *mapper, char *target, uint32_t targetlen) |
| 215 |
{
|
| 216 |
int r;
|
| 217 |
struct map *m = NULL; |
| 218 |
char buf[XSEG_MAX_TARGETLEN+1]; |
| 219 |
//assert targetlen <= XSEG_MAX_TARGETLEN
|
| 220 |
strncpy(buf, target, targetlen); |
| 221 |
buf[targetlen] = 0;
|
| 222 |
XSEGLOG2(&lc, D, "looking up map %s, len %u", buf, targetlen);
|
| 223 |
r = xhash_lookup(mapper->hashmaps, (xhashidx) buf, (xhashidx *) &m); |
| 224 |
if (r < 0) |
| 225 |
return NULL; |
| 226 |
return m;
|
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} |
| 228 |
|
| 229 |
|
| 230 |
static int insert_map(struct mapperd *mapper, struct map *map) |
| 231 |
{
|
| 232 |
int r = -1; |
| 233 |
|
| 234 |
if (find_map(mapper, map->volume, map->volumelen)){
|
| 235 |
XSEGLOG2(&lc, W, "Map %s found in hash maps", map->volume);
|
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goto out;
|
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} |
| 238 |
|
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XSEGLOG2(&lc, D, "Inserting map %s, len: %d (map: %lx)",
|
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map->volume, strlen(map->volume), (unsigned long) map); |
| 241 |
r = xhash_insert(mapper->hashmaps, (xhashidx) map->volume, (xhashidx) map); |
| 242 |
while (r == -XHASH_ERESIZE) {
|
| 243 |
xhashidx shift = xhash_grow_size_shift(mapper->hashmaps); |
| 244 |
xhash_t *new_hashmap = xhash_resize(mapper->hashmaps, shift, NULL);
|
| 245 |
if (!new_hashmap){
|
| 246 |
XSEGLOG2(&lc, E, "Cannot grow mapper->hashmaps to sizeshift %llu",
|
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(unsigned long long) shift); |
| 248 |
goto out;
|
| 249 |
} |
| 250 |
mapper->hashmaps = new_hashmap; |
| 251 |
r = xhash_insert(mapper->hashmaps, (xhashidx) map->volume, (xhashidx) map); |
| 252 |
} |
| 253 |
out:
|
| 254 |
return r;
|
| 255 |
} |
| 256 |
|
| 257 |
static int remove_map(struct mapperd *mapper, struct map *map) |
| 258 |
{
|
| 259 |
int r = -1; |
| 260 |
|
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//assert no pending pr on map
|
| 262 |
|
| 263 |
r = xhash_delete(mapper->hashmaps, (xhashidx) map->volume); |
| 264 |
while (r == -XHASH_ERESIZE) {
|
| 265 |
xhashidx shift = xhash_shrink_size_shift(mapper->hashmaps); |
| 266 |
xhash_t *new_hashmap = xhash_resize(mapper->hashmaps, shift, NULL);
|
| 267 |
if (!new_hashmap){
|
| 268 |
XSEGLOG2(&lc, E, "Cannot shrink mapper->hashmaps to sizeshift %llu",
|
| 269 |
(unsigned long long) shift); |
| 270 |
goto out;
|
| 271 |
} |
| 272 |
mapper->hashmaps = new_hashmap; |
| 273 |
r = xhash_delete(mapper->hashmaps, (xhashidx) map->volume); |
| 274 |
} |
| 275 |
out:
|
| 276 |
return r;
|
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} |
| 278 |
|
| 279 |
static struct xseg_request * __close_map(struct peer_req *pr, struct map *map) |
| 280 |
{
|
| 281 |
int r;
|
| 282 |
xport p; |
| 283 |
struct peerd *peer = pr->peer;
|
| 284 |
struct xseg_request *req;
|
| 285 |
struct mapperd *mapper = __get_mapperd(peer);
|
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void *dummy;
|
| 287 |
|
| 288 |
XSEGLOG2(&lc, I, "Closing map %s", map->volume);
|
| 289 |
|
| 290 |
req = xseg_get_request(peer->xseg, pr->portno, mapper->mbportno, X_ALLOC); |
| 291 |
if (!req){
|
| 292 |
XSEGLOG2(&lc, E, "Cannot allocate request for map %s",
|
| 293 |
map->volume); |
| 294 |
goto out_err;
|
| 295 |
} |
| 296 |
|
| 297 |
r = xseg_prep_request(peer->xseg, req, map->volumelen, block_size); |
| 298 |
if (r < 0){ |
| 299 |
XSEGLOG2(&lc, E, "Cannot prepare request for map %s",
|
| 300 |
map->volume); |
| 301 |
goto out_put;
|
| 302 |
} |
| 303 |
|
| 304 |
char *reqtarget = xseg_get_target(peer->xseg, req);
|
| 305 |
if (!reqtarget)
|
| 306 |
goto out_put;
|
| 307 |
strncpy(reqtarget, map->volume, req->targetlen); |
| 308 |
req->op = X_CLOSE; |
| 309 |
req->size = block_size; |
| 310 |
req->offset = 0;
|
| 311 |
r = xseg_set_req_data(peer->xseg, req, pr); |
| 312 |
if (r < 0){ |
| 313 |
XSEGLOG2(&lc, E, "Cannot set request data for map %s",
|
| 314 |
map->volume); |
| 315 |
goto out_put;
|
| 316 |
} |
| 317 |
p = xseg_submit(peer->xseg, req, pr->portno, X_ALLOC); |
| 318 |
if (p == NoPort){
|
| 319 |
XSEGLOG2(&lc, E, "Cannot submit request for map %s",
|
| 320 |
map->volume); |
| 321 |
goto out_unset;
|
| 322 |
} |
| 323 |
r = xseg_signal(peer->xseg, p); |
| 324 |
|
| 325 |
XSEGLOG2(&lc, I, "Map %s closing", map->volume);
|
| 326 |
return req;
|
| 327 |
|
| 328 |
out_unset:
|
| 329 |
xseg_get_req_data(peer->xseg, req, &dummy); |
| 330 |
out_put:
|
| 331 |
xseg_put_request(peer->xseg, req, pr->portno); |
| 332 |
out_err:
|
| 333 |
return NULL; |
| 334 |
} |
| 335 |
|
| 336 |
static int close_map(struct peer_req *pr, struct map *map) |
| 337 |
{
|
| 338 |
int err;
|
| 339 |
struct xseg_request *req;
|
| 340 |
struct peerd *peer = pr->peer;
|
| 341 |
|
| 342 |
map->flags |= MF_MAP_CLOSING; |
| 343 |
req = __close_map(pr, map); |
| 344 |
if (!req)
|
| 345 |
return -1; |
| 346 |
wait_on_pr(pr, (!((req->state & XS_FAILED)||(req->state & XS_SERVED)))); |
| 347 |
map->flags &= ~MF_MAP_CLOSING; |
| 348 |
err = req->state & XS_FAILED; |
| 349 |
xseg_put_request(peer->xseg, req, pr->portno); |
| 350 |
if (err)
|
| 351 |
return -1; |
| 352 |
return 0; |
| 353 |
} |
| 354 |
|
| 355 |
/*
|
| 356 |
static int find_or_load_map(struct peerd *peer, struct peer_req *pr,
|
| 357 |
char *target, uint32_t targetlen, struct map **m)
|
| 358 |
{
|
| 359 |
struct mapperd *mapper = __get_mapperd(peer);
|
| 360 |
int r;
|
| 361 |
*m = find_map(mapper, target, targetlen);
|
| 362 |
if (*m) {
|
| 363 |
XSEGLOG2(&lc, D, "Found map %s (%u)", (*m)->volume, (unsigned long) *m);
|
| 364 |
if ((*m)->flags & MF_MAP_NOT_READY) {
|
| 365 |
__xq_append_tail(&(*m)->pending, (xqindex) pr);
|
| 366 |
XSEGLOG2(&lc, I, "Map %s found and not ready", (*m)->volume);
|
| 367 |
return MF_PENDING;
|
| 368 |
//} else if ((*m)->flags & MF_MAP_DESTROYED){
|
| 369 |
// return -1;
|
| 370 |
//
|
| 371 |
}else {
|
| 372 |
XSEGLOG2(&lc, I, "Map %s found", (*m)->volume);
|
| 373 |
return 0;
|
| 374 |
}
|
| 375 |
}
|
| 376 |
r = open_map(peer, pr, target, targetlen, 0);
|
| 377 |
if (r < 0)
|
| 378 |
return -1; //error
|
| 379 |
return MF_PENDING;
|
| 380 |
}
|
| 381 |
*/
|
| 382 |
/*
|
| 383 |
* Object handling functions
|
| 384 |
*/
|
| 385 |
|
| 386 |
struct map_node *find_object(struct map *map, uint64_t obj_index) |
| 387 |
{
|
| 388 |
struct map_node *mn;
|
| 389 |
int r = xhash_lookup(map->objects, obj_index, (xhashidx *) &mn);
|
| 390 |
if (r < 0) |
| 391 |
return NULL; |
| 392 |
return mn;
|
| 393 |
} |
| 394 |
|
| 395 |
static int insert_object(struct map *map, struct map_node *mn) |
| 396 |
{
|
| 397 |
//FIXME no find object first
|
| 398 |
int r = xhash_insert(map->objects, mn->objectidx, (xhashidx) mn);
|
| 399 |
if (r == -XHASH_ERESIZE) {
|
| 400 |
unsigned long shift = xhash_grow_size_shift(map->objects); |
| 401 |
map->objects = xhash_resize(map->objects, shift, NULL);
|
| 402 |
if (!map->objects)
|
| 403 |
return -1; |
| 404 |
r = xhash_insert(map->objects, mn->objectidx, (xhashidx) mn); |
| 405 |
} |
| 406 |
return r;
|
| 407 |
} |
| 408 |
|
| 409 |
|
| 410 |
/*
|
| 411 |
* map read/write functions
|
| 412 |
*/
|
| 413 |
static inline void pithosmap_to_object(struct map_node *mn, unsigned char *buf) |
| 414 |
{
|
| 415 |
int i;
|
| 416 |
//hexlify sha256 value
|
| 417 |
for (i = 0; i < SHA256_DIGEST_SIZE; i++) { |
| 418 |
sprintf(mn->object+2*i, "%02x", buf[i]); |
| 419 |
} |
| 420 |
|
| 421 |
mn->object[SHA256_DIGEST_SIZE * 2] = 0; |
| 422 |
mn->objectlen = SHA256_DIGEST_SIZE * 2;
|
| 423 |
mn->flags = MF_OBJECT_EXIST; |
| 424 |
} |
| 425 |
|
| 426 |
static inline void map_to_object(struct map_node *mn, char *buf) |
| 427 |
{
|
| 428 |
char c = buf[0]; |
| 429 |
mn->flags = 0;
|
| 430 |
if (c)
|
| 431 |
mn->flags |= MF_OBJECT_EXIST; |
| 432 |
memcpy(mn->object, buf+1, XSEG_MAX_TARGETLEN);
|
| 433 |
mn->object[XSEG_MAX_TARGETLEN] = 0;
|
| 434 |
mn->objectlen = strlen(mn->object); |
| 435 |
} |
| 436 |
|
| 437 |
static inline void object_to_map(char* buf, struct map_node *mn) |
| 438 |
{
|
| 439 |
buf[0] = (mn->flags & MF_OBJECT_EXIST)? 1 : 0; |
| 440 |
memcpy(buf+1, mn->object, mn->objectlen);
|
| 441 |
memset(buf+1+mn->objectlen, 0, XSEG_MAX_TARGETLEN - mn->objectlen); //zero out the rest of the buffer |
| 442 |
} |
| 443 |
|
| 444 |
static inline void mapheader_to_map(struct map *m, char *buf) |
| 445 |
{
|
| 446 |
uint64_t pos = 0;
|
| 447 |
memcpy(buf + pos, magic_sha256, SHA256_DIGEST_SIZE); |
| 448 |
pos += SHA256_DIGEST_SIZE; |
| 449 |
memcpy(buf + pos, &m->size, sizeof(m->size));
|
| 450 |
pos += sizeof(m->size);
|
| 451 |
} |
| 452 |
|
| 453 |
|
| 454 |
static struct xseg_request * object_write(struct peerd *peer, struct peer_req *pr, |
| 455 |
struct map *map, struct map_node *mn) |
| 456 |
{
|
| 457 |
void *dummy;
|
| 458 |
struct mapperd *mapper = __get_mapperd(peer);
|
| 459 |
struct xseg_request *req = xseg_get_request(peer->xseg, pr->portno,
|
| 460 |
mapper->mbportno, X_ALLOC); |
| 461 |
if (!req){
|
| 462 |
XSEGLOG2(&lc, E, "Cannot allocate request for object %s. \n\t"
|
| 463 |
"(Map: %s [%llu]",
|
| 464 |
mn->object, map->volume, (unsigned long long) mn->objectidx); |
| 465 |
goto out_err;
|
| 466 |
} |
| 467 |
int r = xseg_prep_request(peer->xseg, req, map->volumelen, objectsize_in_map);
|
| 468 |
if (r < 0){ |
| 469 |
XSEGLOG2(&lc, E, "Cannot allocate request for object %s. \n\t"
|
| 470 |
"(Map: %s [%llu]",
|
| 471 |
mn->object, map->volume, (unsigned long long) mn->objectidx); |
| 472 |
goto out_put;
|
| 473 |
} |
| 474 |
char *target = xseg_get_target(peer->xseg, req);
|
| 475 |
strncpy(target, map->volume, req->targetlen); |
| 476 |
req->size = objectsize_in_map; |
| 477 |
req->offset = mapheader_size + mn->objectidx * objectsize_in_map; |
| 478 |
req->op = X_WRITE; |
| 479 |
char *data = xseg_get_data(peer->xseg, req);
|
| 480 |
object_to_map(data, mn); |
| 481 |
|
| 482 |
r = xseg_set_req_data(peer->xseg, req, pr); |
| 483 |
if (r < 0){ |
| 484 |
XSEGLOG2(&lc, E, "Cannot set request data for object %s. \n\t"
|
| 485 |
"(Map: %s [%llu]",
|
| 486 |
mn->object, map->volume, (unsigned long long) mn->objectidx); |
| 487 |
goto out_put;
|
| 488 |
} |
| 489 |
xport p = xseg_submit(peer->xseg, req, pr->portno, X_ALLOC); |
| 490 |
if (p == NoPort){
|
| 491 |
XSEGLOG2(&lc, E, "Cannot submit request for object %s. \n\t"
|
| 492 |
"(Map: %s [%llu]",
|
| 493 |
mn->object, map->volume, (unsigned long long) mn->objectidx); |
| 494 |
goto out_unset;
|
| 495 |
} |
| 496 |
r = xseg_signal(peer->xseg, p); |
| 497 |
if (r < 0) |
| 498 |
XSEGLOG2(&lc, W, "Cannot signal port %u", p);
|
| 499 |
|
| 500 |
XSEGLOG2(&lc, I, "Writing object %s \n\t"
|
| 501 |
"Map: %s [%llu]",
|
| 502 |
mn->object, map->volume, (unsigned long long) mn->objectidx); |
| 503 |
|
| 504 |
return req;
|
| 505 |
|
| 506 |
out_unset:
|
| 507 |
xseg_get_req_data(peer->xseg, req, &dummy); |
| 508 |
out_put:
|
| 509 |
xseg_put_request(peer->xseg, req, pr->portno); |
| 510 |
out_err:
|
| 511 |
XSEGLOG2(&lc, E, "Object write for object %s failed. \n\t"
|
| 512 |
"(Map: %s [%llu]",
|
| 513 |
mn->object, map->volume, (unsigned long long) mn->objectidx); |
| 514 |
return NULL; |
| 515 |
} |
| 516 |
|
| 517 |
static struct xseg_request * __write_map(struct peer_req* pr, struct map *map) |
| 518 |
{
|
| 519 |
void *dummy;
|
| 520 |
struct peerd *peer = pr->peer;
|
| 521 |
struct mapperd *mapper = __get_mapperd(peer);
|
| 522 |
struct map_node *mn;
|
| 523 |
uint64_t i, pos, max_objidx = calc_map_obj(map); |
| 524 |
struct xseg_request *req = xseg_get_request(peer->xseg, pr->portno,
|
| 525 |
mapper->mbportno, X_ALLOC); |
| 526 |
if (!req){
|
| 527 |
XSEGLOG2(&lc, E, "Cannot allocate request for map %s", map->volume);
|
| 528 |
goto out_err;
|
| 529 |
} |
| 530 |
int r = xseg_prep_request(peer->xseg, req, map->volumelen,
|
| 531 |
mapheader_size + max_objidx * objectsize_in_map); |
| 532 |
if (r < 0){ |
| 533 |
XSEGLOG2(&lc, E, "Cannot prepare request for map %s", map->volume);
|
| 534 |
goto out_put;
|
| 535 |
} |
| 536 |
char *target = xseg_get_target(peer->xseg, req);
|
| 537 |
strncpy(target, map->volume, req->targetlen); |
| 538 |
char *data = xseg_get_data(peer->xseg, req);
|
| 539 |
mapheader_to_map(map, data); |
| 540 |
pos = mapheader_size; |
| 541 |
req->op = X_WRITE; |
| 542 |
req->size = req->datalen; |
| 543 |
req->offset = 0;
|
| 544 |
|
| 545 |
if (map->size % block_size)
|
| 546 |
max_objidx++; |
| 547 |
for (i = 0; i < max_objidx; i++) { |
| 548 |
mn = find_object(map, i); |
| 549 |
if (!mn){
|
| 550 |
XSEGLOG2(&lc, E, "Cannot find object %lli for map %s",
|
| 551 |
(unsigned long long) i, map->volume); |
| 552 |
goto out_put;
|
| 553 |
} |
| 554 |
object_to_map(data+pos, mn); |
| 555 |
pos += objectsize_in_map; |
| 556 |
} |
| 557 |
r = xseg_set_req_data(peer->xseg, req, pr); |
| 558 |
if (r < 0){ |
| 559 |
XSEGLOG2(&lc, E, "Cannot set request data for map %s",
|
| 560 |
map->volume); |
| 561 |
goto out_put;
|
| 562 |
} |
| 563 |
xport p = xseg_submit(peer->xseg, req, pr->portno, X_ALLOC); |
| 564 |
if (p == NoPort){
|
| 565 |
XSEGLOG2(&lc, E, "Cannot submit request for map %s",
|
| 566 |
map->volume); |
| 567 |
goto out_unset;
|
| 568 |
} |
| 569 |
r = xseg_signal(peer->xseg, p); |
| 570 |
if (r < 0) |
| 571 |
XSEGLOG2(&lc, W, "Cannot signal port %u", p);
|
| 572 |
|
| 573 |
map->flags |= MF_MAP_WRITING; |
| 574 |
XSEGLOG2(&lc, I, "Writing map %s", map->volume);
|
| 575 |
return req;
|
| 576 |
|
| 577 |
out_unset:
|
| 578 |
xseg_get_req_data(peer->xseg, req, &dummy); |
| 579 |
out_put:
|
| 580 |
xseg_put_request(peer->xseg, req, pr->portno); |
| 581 |
out_err:
|
| 582 |
XSEGLOG2(&lc, E, "Map write for map %s failed.", map->volume);
|
| 583 |
return NULL; |
| 584 |
} |
| 585 |
|
| 586 |
static int write_map(struct peer_req* pr, struct map *map) |
| 587 |
{
|
| 588 |
int r = 0; |
| 589 |
struct peerd *peer = pr->peer;
|
| 590 |
map->flags |= MF_MAP_WRITING; |
| 591 |
struct xseg_request *req = __write_map(pr, map);
|
| 592 |
if (!req)
|
| 593 |
return -1; |
| 594 |
wait_on_pr(pr, (!(req->state & XS_FAILED || req->state & XS_SERVED))); |
| 595 |
if (req->state & XS_FAILED)
|
| 596 |
r = -1;
|
| 597 |
xseg_put_request(peer->xseg, req, pr->portno); |
| 598 |
map->flags &= ~MF_MAP_WRITING; |
| 599 |
return r;
|
| 600 |
} |
| 601 |
|
| 602 |
static struct xseg_request * __load_map(struct peer_req *pr, struct map *m) |
| 603 |
{
|
| 604 |
int r;
|
| 605 |
xport p; |
| 606 |
struct xseg_request *req;
|
| 607 |
struct peerd *peer = pr->peer;
|
| 608 |
struct mapperd *mapper = __get_mapperd(peer);
|
| 609 |
void *dummy;
|
| 610 |
|
| 611 |
XSEGLOG2(&lc, I, "Loading ng map %s", m->volume);
|
| 612 |
|
| 613 |
req = xseg_get_request(peer->xseg, pr->portno, mapper->mbportno, X_ALLOC); |
| 614 |
if (!req){
|
| 615 |
XSEGLOG2(&lc, E, "Cannot allocate request for map %s",
|
| 616 |
m->volume); |
| 617 |
goto out_fail;
|
| 618 |
} |
| 619 |
|
| 620 |
r = xseg_prep_request(peer->xseg, req, m->volumelen, block_size); |
| 621 |
if (r < 0){ |
| 622 |
XSEGLOG2(&lc, E, "Cannot prepare request for map %s",
|
| 623 |
m->volume); |
| 624 |
goto out_put;
|
| 625 |
} |
| 626 |
|
| 627 |
char *reqtarget = xseg_get_target(peer->xseg, req);
|
| 628 |
if (!reqtarget)
|
| 629 |
goto out_put;
|
| 630 |
strncpy(reqtarget, m->volume, req->targetlen); |
| 631 |
req->op = X_READ; |
| 632 |
req->size = block_size; |
| 633 |
req->offset = 0;
|
| 634 |
r = xseg_set_req_data(peer->xseg, req, pr); |
| 635 |
if (r < 0){ |
| 636 |
XSEGLOG2(&lc, E, "Cannot set request data for map %s",
|
| 637 |
m->volume); |
| 638 |
goto out_put;
|
| 639 |
} |
| 640 |
p = xseg_submit(peer->xseg, req, pr->portno, X_ALLOC); |
| 641 |
if (p == NoPort){
|
| 642 |
XSEGLOG2(&lc, E, "Cannot submit request for map %s",
|
| 643 |
m->volume); |
| 644 |
goto out_unset;
|
| 645 |
} |
| 646 |
r = xseg_signal(peer->xseg, p); |
| 647 |
|
| 648 |
XSEGLOG2(&lc, I, "Map %s loading", m->volume);
|
| 649 |
return req;
|
| 650 |
|
| 651 |
out_unset:
|
| 652 |
xseg_get_req_data(peer->xseg, req, &dummy); |
| 653 |
out_put:
|
| 654 |
xseg_put_request(peer->xseg, req, pr->portno); |
| 655 |
out_fail:
|
| 656 |
return NULL; |
| 657 |
} |
| 658 |
|
| 659 |
static int read_map (struct map *map, char *buf) |
| 660 |
{
|
| 661 |
char nulls[SHA256_DIGEST_SIZE];
|
| 662 |
memset(nulls, 0, SHA256_DIGEST_SIZE);
|
| 663 |
|
| 664 |
int r = !memcmp(buf, nulls, SHA256_DIGEST_SIZE);
|
| 665 |
if (r) {
|
| 666 |
XSEGLOG2(&lc, D, "Read zeros");
|
| 667 |
//read error;
|
| 668 |
return -1; |
| 669 |
} |
| 670 |
//type 1, our type, type 0 pithos map
|
| 671 |
int type = !memcmp(buf, magic_sha256, SHA256_DIGEST_SIZE);
|
| 672 |
XSEGLOG2(&lc, I, "Type %d detected for map %s", type, map->volume);
|
| 673 |
uint64_t pos; |
| 674 |
uint64_t i, nr_objs; |
| 675 |
struct map_node *map_node;
|
| 676 |
if (type) {
|
| 677 |
pos = SHA256_DIGEST_SIZE; |
| 678 |
map->size = *(uint64_t *) (buf + pos); |
| 679 |
pos += sizeof(uint64_t);
|
| 680 |
nr_objs = map->size / block_size; |
| 681 |
if (map->size % block_size)
|
| 682 |
nr_objs++; |
| 683 |
map_node = calloc(nr_objs, sizeof(struct map_node)); |
| 684 |
if (!map_node)
|
| 685 |
return -1; |
| 686 |
|
| 687 |
for (i = 0; i < nr_objs; i++) { |
| 688 |
map_node[i].map = map; |
| 689 |
map_node[i].objectidx = i; |
| 690 |
map_node[i].waiters = 0;
|
| 691 |
map_node[i].ref = 1;
|
| 692 |
map_node[i].cond = st_cond_new(); //FIXME err check;
|
| 693 |
map_to_object(&map_node[i], buf + pos); |
| 694 |
pos += objectsize_in_map; |
| 695 |
r = insert_object(map, &map_node[i]); //FIXME error check
|
| 696 |
} |
| 697 |
} else {
|
| 698 |
pos = 0;
|
| 699 |
uint64_t max_nr_objs = block_size/SHA256_DIGEST_SIZE; |
| 700 |
map_node = calloc(max_nr_objs, sizeof(struct map_node)); |
| 701 |
if (!map_node)
|
| 702 |
return -1; |
| 703 |
for (i = 0; i < max_nr_objs; i++) { |
| 704 |
if (!memcmp(buf+pos, nulls, SHA256_DIGEST_SIZE))
|
| 705 |
break;
|
| 706 |
map_node[i].objectidx = i; |
| 707 |
map_node[i].map = map; |
| 708 |
map_node[i].waiters = 0;
|
| 709 |
map_node[i].ref = 1;
|
| 710 |
map_node[i].cond = st_cond_new(); //FIXME err check;
|
| 711 |
pithosmap_to_object(&map_node[i], buf + pos); |
| 712 |
pos += SHA256_DIGEST_SIZE; |
| 713 |
r = insert_object(map, &map_node[i]); //FIXME error check
|
| 714 |
} |
| 715 |
map->size = i * block_size; |
| 716 |
} |
| 717 |
print_map(map); |
| 718 |
XSEGLOG2(&lc, I, "Map read for map %s completed", map->volume);
|
| 719 |
return 0; |
| 720 |
|
| 721 |
//FIXME cleanup on error
|
| 722 |
} |
| 723 |
|
| 724 |
static int load_map(struct peer_req *pr, struct map *map) |
| 725 |
{
|
| 726 |
int r = 0; |
| 727 |
struct xseg_request *req;
|
| 728 |
struct peerd *peer = pr->peer;
|
| 729 |
map->flags |= MF_MAP_LOADING; |
| 730 |
req = __load_map(pr, map); |
| 731 |
if (!req)
|
| 732 |
return -1; |
| 733 |
wait_on_pr(pr, (!(req->state & XS_FAILED || req->state & XS_SERVED))); |
| 734 |
map->flags &= ~MF_MAP_LOADING; |
| 735 |
if (req->state & XS_FAILED){
|
| 736 |
XSEGLOG2(&lc, E, "Map load failed for map %s", map->volume);
|
| 737 |
xseg_put_request(peer->xseg, req, pr->portno); |
| 738 |
return -1; |
| 739 |
} |
| 740 |
r = read_map(map, xseg_get_data(peer->xseg, req)); |
| 741 |
xseg_put_request(peer->xseg, req, pr->portno); |
| 742 |
return r;
|
| 743 |
} |
| 744 |
|
| 745 |
static struct xseg_request * __open_map(struct peer_req *pr, struct map *m) |
| 746 |
{
|
| 747 |
int r;
|
| 748 |
xport p; |
| 749 |
struct xseg_request *req;
|
| 750 |
struct peerd *peer = pr->peer;
|
| 751 |
struct mapperd *mapper = __get_mapperd(peer);
|
| 752 |
void *dummy;
|
| 753 |
|
| 754 |
XSEGLOG2(&lc, I, "Opening map %s", m->volume);
|
| 755 |
|
| 756 |
req = xseg_get_request(peer->xseg, pr->portno, mapper->mbportno, X_ALLOC); |
| 757 |
if (!req){
|
| 758 |
XSEGLOG2(&lc, E, "Cannot allocate request for map %s",
|
| 759 |
m->volume); |
| 760 |
goto out_fail;
|
| 761 |
} |
| 762 |
|
| 763 |
r = xseg_prep_request(peer->xseg, req, m->volumelen, block_size); |
| 764 |
if (r < 0){ |
| 765 |
XSEGLOG2(&lc, E, "Cannot prepare request for map %s",
|
| 766 |
m->volume); |
| 767 |
goto out_put;
|
| 768 |
} |
| 769 |
|
| 770 |
char *reqtarget = xseg_get_target(peer->xseg, req);
|
| 771 |
if (!reqtarget)
|
| 772 |
goto out_put;
|
| 773 |
strncpy(reqtarget, m->volume, req->targetlen); |
| 774 |
req->op = X_OPEN; |
| 775 |
req->size = block_size; |
| 776 |
req->offset = 0;
|
| 777 |
r = xseg_set_req_data(peer->xseg, req, pr); |
| 778 |
if (r < 0){ |
| 779 |
XSEGLOG2(&lc, E, "Cannot set request data for map %s",
|
| 780 |
m->volume); |
| 781 |
goto out_put;
|
| 782 |
} |
| 783 |
p = xseg_submit(peer->xseg, req, pr->portno, X_ALLOC); |
| 784 |
if (p == NoPort){
|
| 785 |
XSEGLOG2(&lc, E, "Cannot submit request for map %s",
|
| 786 |
m->volume); |
| 787 |
goto out_unset;
|
| 788 |
} |
| 789 |
r = xseg_signal(peer->xseg, p); |
| 790 |
|
| 791 |
XSEGLOG2(&lc, I, "Map %s opening", m->volume);
|
| 792 |
return req;
|
| 793 |
|
| 794 |
out_unset:
|
| 795 |
xseg_get_req_data(peer->xseg, req, &dummy); |
| 796 |
out_put:
|
| 797 |
xseg_put_request(peer->xseg, req, pr->portno); |
| 798 |
out_fail:
|
| 799 |
return NULL; |
| 800 |
} |
| 801 |
|
| 802 |
static int open_map(struct peer_req *pr, struct map *map) |
| 803 |
{
|
| 804 |
int err;
|
| 805 |
struct xseg_request *req;
|
| 806 |
struct peerd *peer = pr->peer;
|
| 807 |
|
| 808 |
map->flags |= MF_MAP_OPENING; |
| 809 |
req = __open_map(pr, map); |
| 810 |
if (!req)
|
| 811 |
return -1; |
| 812 |
wait_on_pr(pr, (!((req->state & XS_FAILED)||(req->state & XS_SERVED)))); |
| 813 |
map->flags &= ~MF_MAP_OPENING; |
| 814 |
err = req->state & XS_FAILED; |
| 815 |
xseg_put_request(peer->xseg, req, pr->portno); |
| 816 |
if (err)
|
| 817 |
return -1; |
| 818 |
else
|
| 819 |
map->flags |= MF_MAP_EXCLUSIVE; |
| 820 |
return 0; |
| 821 |
} |
| 822 |
|
| 823 |
/*
|
| 824 |
* copy up functions
|
| 825 |
*/
|
| 826 |
|
| 827 |
static int __set_copyup_node(struct mapper_io *mio, struct xseg_request *req, struct map_node *mn) |
| 828 |
{
|
| 829 |
int r = 0; |
| 830 |
if (mn){
|
| 831 |
r = xhash_insert(mio->copyups_nodes, (xhashidx) req, (xhashidx) mn); |
| 832 |
if (r == -XHASH_ERESIZE) {
|
| 833 |
xhashidx shift = xhash_grow_size_shift(mio->copyups_nodes); |
| 834 |
xhash_t *new_hashmap = xhash_resize(mio->copyups_nodes, shift, NULL);
|
| 835 |
if (!new_hashmap)
|
| 836 |
goto out;
|
| 837 |
mio->copyups_nodes = new_hashmap; |
| 838 |
r = xhash_insert(mio->copyups_nodes, (xhashidx) req, (xhashidx) mn); |
| 839 |
} |
| 840 |
} |
| 841 |
else {
|
| 842 |
r = xhash_delete(mio->copyups_nodes, (xhashidx) req); |
| 843 |
if (r == -XHASH_ERESIZE) {
|
| 844 |
xhashidx shift = xhash_shrink_size_shift(mio->copyups_nodes); |
| 845 |
xhash_t *new_hashmap = xhash_resize(mio->copyups_nodes, shift, NULL);
|
| 846 |
if (!new_hashmap)
|
| 847 |
goto out;
|
| 848 |
mio->copyups_nodes = new_hashmap; |
| 849 |
r = xhash_delete(mio->copyups_nodes, (xhashidx) req); |
| 850 |
} |
| 851 |
} |
| 852 |
out:
|
| 853 |
return r;
|
| 854 |
} |
| 855 |
|
| 856 |
static struct map_node * __get_copyup_node(struct mapper_io *mio, struct xseg_request *req) |
| 857 |
{
|
| 858 |
struct map_node *mn;
|
| 859 |
int r = xhash_lookup(mio->copyups_nodes, (xhashidx) req, (xhashidx *) &mn);
|
| 860 |
if (r < 0) |
| 861 |
return NULL; |
| 862 |
return mn;
|
| 863 |
} |
| 864 |
|
| 865 |
static struct xseg_request * copyup_object(struct peerd *peer, struct map_node *mn, struct peer_req *pr) |
| 866 |
{
|
| 867 |
struct mapperd *mapper = __get_mapperd(peer);
|
| 868 |
struct mapper_io *mio = __get_mapper_io(pr);
|
| 869 |
struct map *map = mn->map;
|
| 870 |
void *dummy;
|
| 871 |
int r = -1, i; |
| 872 |
xport p; |
| 873 |
|
| 874 |
//struct sha256_ctx sha256ctx;
|
| 875 |
uint32_t newtargetlen; |
| 876 |
char new_target[XSEG_MAX_TARGETLEN + 1]; |
| 877 |
unsigned char buf[SHA256_DIGEST_SIZE]; //assert sha256_digest_size(32) <= MAXTARGETLEN |
| 878 |
char new_object[XSEG_MAX_TARGETLEN + 20]; //20 is an arbitrary padding able to hold string representation of objectidx |
| 879 |
strncpy(new_object, map->volume, map->volumelen); |
| 880 |
sprintf(new_object + map->volumelen, "%u", mn->objectidx); //sprintf adds null termination |
| 881 |
new_object[XSEG_MAX_TARGETLEN + 19] = 0; |
| 882 |
|
| 883 |
gcry_md_hash_buffer(GCRY_MD_SHA256, buf, new_object, strlen(new_object)); |
| 884 |
for (i = 0; i < SHA256_DIGEST_SIZE; ++i) |
| 885 |
sprintf (new_target + 2*i, "%02x", buf[i]); |
| 886 |
newtargetlen = SHA256_DIGEST_SIZE * 2;
|
| 887 |
|
| 888 |
if (!strncmp(mn->object, zero_block, (mn->objectlen < HEXLIFIED_SHA256_DIGEST_SIZE)? mn->objectlen : HEXLIFIED_SHA256_DIGEST_SIZE))
|
| 889 |
goto copyup_zeroblock;
|
| 890 |
|
| 891 |
struct xseg_request *req = xseg_get_request(peer->xseg, pr->portno,
|
| 892 |
mapper->bportno, X_ALLOC); |
| 893 |
if (!req){
|
| 894 |
XSEGLOG2(&lc, E, "Cannot get request for object %s", mn->object);
|
| 895 |
goto out_err;
|
| 896 |
} |
| 897 |
r = xseg_prep_request(peer->xseg, req, newtargetlen, |
| 898 |
sizeof(struct xseg_request_copy)); |
| 899 |
if (r < 0){ |
| 900 |
XSEGLOG2(&lc, E, "Cannot prepare request for object %s", mn->object);
|
| 901 |
goto out_put;
|
| 902 |
} |
| 903 |
|
| 904 |
char *target = xseg_get_target(peer->xseg, req);
|
| 905 |
strncpy(target, new_target, req->targetlen); |
| 906 |
|
| 907 |
struct xseg_request_copy *xcopy = (struct xseg_request_copy *) xseg_get_data(peer->xseg, req); |
| 908 |
strncpy(xcopy->target, mn->object, mn->objectlen); |
| 909 |
xcopy->targetlen = mn->objectlen; |
| 910 |
|
| 911 |
req->offset = 0;
|
| 912 |
req->size = block_size; |
| 913 |
req->op = X_COPY; |
| 914 |
r = xseg_set_req_data(peer->xseg, req, pr); |
| 915 |
if (r<0){ |
| 916 |
XSEGLOG2(&lc, E, "Cannot set request data for object %s", mn->object);
|
| 917 |
goto out_put;
|
| 918 |
} |
| 919 |
r = __set_copyup_node(mio, req, mn); |
| 920 |
p = xseg_submit(peer->xseg, req, pr->portno, X_ALLOC); |
| 921 |
if (p == NoPort) {
|
| 922 |
XSEGLOG2(&lc, E, "Cannot submit for object %s", mn->object);
|
| 923 |
goto out_unset;
|
| 924 |
} |
| 925 |
xseg_signal(peer->xseg, p); |
| 926 |
// mio->copyups++;
|
| 927 |
|
| 928 |
mn->flags |= MF_OBJECT_COPYING; |
| 929 |
XSEGLOG2(&lc, I, "Copying up object %s \n\t to %s", mn->object, new_target);
|
| 930 |
return req;
|
| 931 |
|
| 932 |
out_unset:
|
| 933 |
r = __set_copyup_node(mio, req, NULL);
|
| 934 |
xseg_get_req_data(peer->xseg, req, &dummy); |
| 935 |
out_put:
|
| 936 |
xseg_put_request(peer->xseg, req, pr->portno); |
| 937 |
out_err:
|
| 938 |
XSEGLOG2(&lc, E, "Copying up object %s \n\t to %s failed", mn->object, new_target);
|
| 939 |
return NULL; |
| 940 |
|
| 941 |
copyup_zeroblock:
|
| 942 |
XSEGLOG2(&lc, I, "Copying up of zero block is not needed."
|
| 943 |
"Proceeding in writing the new object in map");
|
| 944 |
/* construct a tmp map_node for writing purposes */
|
| 945 |
struct map_node newmn = *mn;
|
| 946 |
newmn.flags = MF_OBJECT_EXIST; |
| 947 |
strncpy(newmn.object, new_target, newtargetlen); |
| 948 |
newmn.object[newtargetlen] = 0;
|
| 949 |
newmn.objectlen = newtargetlen; |
| 950 |
newmn.objectidx = mn->objectidx; |
| 951 |
req = object_write(peer, pr, map, &newmn); |
| 952 |
r = __set_copyup_node(mio, req, mn); |
| 953 |
if (!req){
|
| 954 |
XSEGLOG2(&lc, E, "Object write returned error for object %s"
|
| 955 |
"\n\t of map %s [%llu]",
|
| 956 |
mn->object, map->volume, (unsigned long long) mn->objectidx); |
| 957 |
return NULL; |
| 958 |
} |
| 959 |
mn->flags |= MF_OBJECT_WRITING; |
| 960 |
XSEGLOG2(&lc, I, "Object %s copy up completed. Pending writing.", mn->object);
|
| 961 |
return req;
|
| 962 |
} |
| 963 |
|
| 964 |
static struct xseg_request * delete_object(struct peer_req *pr, struct map_node *mn) |
| 965 |
{
|
| 966 |
void *dummy;
|
| 967 |
struct peerd *peer = pr->peer;
|
| 968 |
struct mapperd *mapper = __get_mapperd(peer);
|
| 969 |
struct mapper_io *mio = __get_mapper_io(pr);
|
| 970 |
struct xseg_request *req = xseg_get_request(peer->xseg, pr->portno,
|
| 971 |
mapper->bportno, X_ALLOC); |
| 972 |
XSEGLOG2(&lc, I, "Deleting mapnode %s", mn->object);
|
| 973 |
if (!req){
|
| 974 |
XSEGLOG2(&lc, E, "Cannot get request for object %s", mn->object);
|
| 975 |
goto out_err;
|
| 976 |
} |
| 977 |
int r = xseg_prep_request(peer->xseg, req, mn->objectlen, 0); |
| 978 |
if (r < 0){ |
| 979 |
XSEGLOG2(&lc, E, "Cannot prep request for object %s", mn->object);
|
| 980 |
goto out_put;
|
| 981 |
} |
| 982 |
char *target = xseg_get_target(peer->xseg, req);
|
| 983 |
strncpy(target, mn->object, req->targetlen); |
| 984 |
req->op = X_DELETE; |
| 985 |
req->size = req->datalen; |
| 986 |
req->offset = 0;
|
| 987 |
r = xseg_set_req_data(peer->xseg, req, pr); |
| 988 |
if (r < 0){ |
| 989 |
XSEGLOG2(&lc, E, "Cannot set req data for object %s", mn->object);
|
| 990 |
goto out_put;
|
| 991 |
} |
| 992 |
__set_copyup_node(mio, req, mn); |
| 993 |
xport p = xseg_submit(peer->xseg, req, pr->portno, X_ALLOC); |
| 994 |
if (p == NoPort){
|
| 995 |
XSEGLOG2(&lc, E, "Cannot submit request for object %s", mn->object);
|
| 996 |
goto out_unset;
|
| 997 |
} |
| 998 |
r = xseg_signal(peer->xseg, p); |
| 999 |
XSEGLOG2(&lc, I, "Object %s deletion pending", mn->object);
|
| 1000 |
return req;
|
| 1001 |
|
| 1002 |
out_unset:
|
| 1003 |
xseg_get_req_data(peer->xseg, req, &dummy); |
| 1004 |
out_put:
|
| 1005 |
xseg_put_request(peer->xseg, req, pr->portno); |
| 1006 |
out_err:
|
| 1007 |
XSEGLOG2(&lc, I, "Object %s deletion failed", mn->object);
|
| 1008 |
return NULL; |
| 1009 |
} |
| 1010 |
|
| 1011 |
static struct xseg_request * delete_map(struct peer_req *pr, struct map *map) |
| 1012 |
{
|
| 1013 |
void *dummy;
|
| 1014 |
struct peerd *peer = pr->peer;
|
| 1015 |
struct mapperd *mapper = __get_mapperd(peer);
|
| 1016 |
struct mapper_io *mio = __get_mapper_io(pr);
|
| 1017 |
struct xseg_request *req = xseg_get_request(peer->xseg, pr->portno,
|
| 1018 |
mapper->mbportno, X_ALLOC); |
| 1019 |
XSEGLOG2(&lc, I, "Deleting map %s", map->volume);
|
| 1020 |
if (!req){
|
| 1021 |
XSEGLOG2(&lc, E, "Cannot get request for map %s", map->volume);
|
| 1022 |
goto out_err;
|
| 1023 |
} |
| 1024 |
int r = xseg_prep_request(peer->xseg, req, map->volumelen, 0); |
| 1025 |
if (r < 0){ |
| 1026 |
XSEGLOG2(&lc, E, "Cannot prep request for map %s", map->volume);
|
| 1027 |
goto out_put;
|
| 1028 |
} |
| 1029 |
char *target = xseg_get_target(peer->xseg, req);
|
| 1030 |
strncpy(target, map->volume, req->targetlen); |
| 1031 |
req->op = X_DELETE; |
| 1032 |
req->size = req->datalen; |
| 1033 |
req->offset = 0;
|
| 1034 |
r = xseg_set_req_data(peer->xseg, req, pr); |
| 1035 |
if (r < 0){ |
| 1036 |
XSEGLOG2(&lc, E, "Cannot set req data for map %s", map->volume);
|
| 1037 |
goto out_put;
|
| 1038 |
} |
| 1039 |
__set_copyup_node(mio, req, NULL);
|
| 1040 |
xport p = xseg_submit(peer->xseg, req, pr->portno, X_ALLOC); |
| 1041 |
if (p == NoPort){
|
| 1042 |
XSEGLOG2(&lc, E, "Cannot submit request for map %s", map->volume);
|
| 1043 |
goto out_unset;
|
| 1044 |
} |
| 1045 |
r = xseg_signal(peer->xseg, p); |
| 1046 |
map->flags |= MF_MAP_DELETING; |
| 1047 |
XSEGLOG2(&lc, I, "Map %s deletion pending", map->volume);
|
| 1048 |
return req;
|
| 1049 |
|
| 1050 |
out_unset:
|
| 1051 |
xseg_get_req_data(peer->xseg, req, &dummy); |
| 1052 |
out_put:
|
| 1053 |
xseg_put_request(peer->xseg, req, pr->portno); |
| 1054 |
out_err:
|
| 1055 |
XSEGLOG2(&lc, E, "Map %s deletion failed", map->volume);
|
| 1056 |
return NULL; |
| 1057 |
} |
| 1058 |
|
| 1059 |
|
| 1060 |
static inline struct map_node * get_mapnode(struct map *map, uint32_t index) |
| 1061 |
{
|
| 1062 |
struct map_node *mn = find_object(map, index);
|
| 1063 |
if (mn)
|
| 1064 |
mn->ref++; |
| 1065 |
return mn;
|
| 1066 |
} |
| 1067 |
|
| 1068 |
static inline void put_mapnode(struct map_node *mn) |
| 1069 |
{
|
| 1070 |
mn->ref--; |
| 1071 |
if (!mn->ref){
|
| 1072 |
//clean up mn
|
| 1073 |
st_cond_destroy(mn->cond); |
| 1074 |
} |
| 1075 |
} |
| 1076 |
|
| 1077 |
static inline void __get_map(struct map *map) |
| 1078 |
{
|
| 1079 |
map->ref++; |
| 1080 |
} |
| 1081 |
|
| 1082 |
static inline void put_map(struct map *map) |
| 1083 |
{
|
| 1084 |
struct map_node *mn;
|
| 1085 |
map->ref--; |
| 1086 |
if (!map->ref){
|
| 1087 |
XSEGLOG2(&lc, I, "Freeing map %s", map->volume);
|
| 1088 |
//clean up map
|
| 1089 |
uint64_t i; |
| 1090 |
for (i = 0; i < calc_map_obj(map); i++) { |
| 1091 |
mn = get_mapnode(map, i); |
| 1092 |
if (mn) {
|
| 1093 |
//make sure all pending operations on all objects are completed
|
| 1094 |
if (mn->flags & MF_OBJECT_NOT_READY){
|
| 1095 |
//this should never happen...
|
| 1096 |
wait_on_mapnode(mn, mn->flags & MF_OBJECT_NOT_READY); |
| 1097 |
} |
| 1098 |
mn->flags &= MF_OBJECT_DESTROYED; |
| 1099 |
put_mapnode(mn); //matchin mn->ref = 1 on mn init
|
| 1100 |
put_mapnode(mn); //matcing get_mapnode;
|
| 1101 |
//assert mn->ref == 0;
|
| 1102 |
} |
| 1103 |
} |
| 1104 |
mn = find_object(map, 0);
|
| 1105 |
if (mn)
|
| 1106 |
free(mn); |
| 1107 |
XSEGLOG2(&lc, I, "Freed map %s", map->volume);
|
| 1108 |
free(map); |
| 1109 |
} |
| 1110 |
} |
| 1111 |
|
| 1112 |
static struct map * create_map(struct mapperd *mapper, char *name, uint32_t namelen) |
| 1113 |
{
|
| 1114 |
int r;
|
| 1115 |
struct map *m = malloc(sizeof(struct map)); |
| 1116 |
if (!m){
|
| 1117 |
XSEGLOG2(&lc, E, "Cannot allocate map ");
|
| 1118 |
goto out_err;
|
| 1119 |
} |
| 1120 |
m->size = -1;
|
| 1121 |
strncpy(m->volume, name, namelen); |
| 1122 |
m->volume[namelen] = 0;
|
| 1123 |
m->volumelen = namelen; |
| 1124 |
m->flags = 0;
|
| 1125 |
m->objects = xhash_new(3, INTEGER);
|
| 1126 |
if (!m->objects){
|
| 1127 |
XSEGLOG2(&lc, E, "Cannot allocate object hashmap for map %s",
|
| 1128 |
m->volume); |
| 1129 |
goto out_map;
|
| 1130 |
} |
| 1131 |
m->ref = 1;
|
| 1132 |
m->waiters = 0;
|
| 1133 |
m->cond = st_cond_new(); //FIXME err check;
|
| 1134 |
r = insert_map(mapper, m); |
| 1135 |
if (r < 0){ |
| 1136 |
XSEGLOG2(&lc, E, "Cannot insert map %s", m->volume);
|
| 1137 |
goto out_hash;
|
| 1138 |
} |
| 1139 |
|
| 1140 |
return m;
|
| 1141 |
|
| 1142 |
out_hash:
|
| 1143 |
xhash_free(m->objects); |
| 1144 |
out_map:
|
| 1145 |
XSEGLOG2(&lc, E, "failed to create map %s", m->volume);
|
| 1146 |
free(m); |
| 1147 |
out_err:
|
| 1148 |
return NULL; |
| 1149 |
} |
| 1150 |
|
| 1151 |
|
| 1152 |
|
| 1153 |
void deletion_cb(struct peer_req *pr, struct xseg_request *req) |
| 1154 |
{
|
| 1155 |
struct peerd *peer = pr->peer;
|
| 1156 |
struct mapperd *mapper = __get_mapperd(peer);
|
| 1157 |
(void)mapper;
|
| 1158 |
struct mapper_io *mio = __get_mapper_io(pr);
|
| 1159 |
struct map_node *mn = __get_copyup_node(mio, req);
|
| 1160 |
|
| 1161 |
mio->del_pending--; |
| 1162 |
if (req->state & XS_FAILED){
|
| 1163 |
mio->err = 1;
|
| 1164 |
} |
| 1165 |
signal_mapnode(mn); |
| 1166 |
xseg_put_request(peer->xseg, req, pr->portno); |
| 1167 |
signal_pr(pr); |
| 1168 |
} |
| 1169 |
|
| 1170 |
void copyup_cb(struct peer_req *pr, struct xseg_request *req) |
| 1171 |
{
|
| 1172 |
struct peerd *peer = pr->peer;
|
| 1173 |
struct mapperd *mapper = __get_mapperd(peer);
|
| 1174 |
(void)mapper;
|
| 1175 |
struct mapper_io *mio = __get_mapper_io(pr);
|
| 1176 |
struct map_node *mn = __get_copyup_node(mio, req);
|
| 1177 |
if (!mn){
|
| 1178 |
XSEGLOG2(&lc, E, "Cannot get map node");
|
| 1179 |
goto out_err;
|
| 1180 |
} |
| 1181 |
__set_copyup_node(mio, req, NULL);
|
| 1182 |
|
| 1183 |
if (req->state & XS_FAILED){
|
| 1184 |
XSEGLOG2(&lc, E, "Req failed");
|
| 1185 |
mn->flags &= ~MF_OBJECT_COPYING; |
| 1186 |
mn->flags &= ~MF_OBJECT_WRITING; |
| 1187 |
goto out_err;
|
| 1188 |
} |
| 1189 |
if (req->op == X_WRITE) {
|
| 1190 |
char *target = xseg_get_target(peer->xseg, req);
|
| 1191 |
(void)target;
|
| 1192 |
//printf("handle object write replyi\n");
|
| 1193 |
__set_copyup_node(mio, req, NULL);
|
| 1194 |
//assert mn->flags & MF_OBJECT_WRITING
|
| 1195 |
mn->flags &= ~MF_OBJECT_WRITING; |
| 1196 |
|
| 1197 |
struct map_node tmp;
|
| 1198 |
char *data = xseg_get_data(peer->xseg, req);
|
| 1199 |
map_to_object(&tmp, data); |
| 1200 |
mn->flags |= MF_OBJECT_EXIST; |
| 1201 |
if (mn->flags != MF_OBJECT_EXIST){
|
| 1202 |
XSEGLOG2(&lc, E, "map node %s has wrong flags", mn->object);
|
| 1203 |
goto out_err;
|
| 1204 |
} |
| 1205 |
//assert mn->flags & MF_OBJECT_EXIST
|
| 1206 |
strncpy(mn->object, tmp.object, tmp.objectlen); |
| 1207 |
mn->object[tmp.objectlen] = 0;
|
| 1208 |
mn->objectlen = tmp.objectlen; |
| 1209 |
XSEGLOG2(&lc, I, "Object write of %s completed successfully", mn->object);
|
| 1210 |
mio->copyups--; |
| 1211 |
signal_mapnode(mn); |
| 1212 |
} else if (req->op == X_COPY) { |
| 1213 |
// issue write_object;
|
| 1214 |
mn->flags &= ~MF_OBJECT_COPYING; |
| 1215 |
struct map *map = mn->map;
|
| 1216 |
if (!map){
|
| 1217 |
XSEGLOG2(&lc, E, "Object %s has not map back pointer", mn->object);
|
| 1218 |
goto out_err;
|
| 1219 |
} |
| 1220 |
|
| 1221 |
/* construct a tmp map_node for writing purposes */
|
| 1222 |
char *target = xseg_get_target(peer->xseg, req);
|
| 1223 |
struct map_node newmn = *mn;
|
| 1224 |
newmn.flags = MF_OBJECT_EXIST; |
| 1225 |
strncpy(newmn.object, target, req->targetlen); |
| 1226 |
newmn.object[req->targetlen] = 0;
|
| 1227 |
newmn.objectlen = req->targetlen; |
| 1228 |
newmn.objectidx = mn->objectidx; |
| 1229 |
struct xseg_request *xreq = object_write(peer, pr, map, &newmn);
|
| 1230 |
if (!xreq){
|
| 1231 |
XSEGLOG2(&lc, E, "Object write returned error for object %s"
|
| 1232 |
"\n\t of map %s [%llu]",
|
| 1233 |
mn->object, map->volume, (unsigned long long) mn->objectidx); |
| 1234 |
goto out_err;
|
| 1235 |
} |
| 1236 |
mn->flags |= MF_OBJECT_WRITING; |
| 1237 |
__set_copyup_node (mio, xreq, mn); |
| 1238 |
|
| 1239 |
XSEGLOG2(&lc, I, "Object %s copy up completed. Pending writing.", mn->object);
|
| 1240 |
} else {
|
| 1241 |
//wtf??
|
| 1242 |
; |
| 1243 |
} |
| 1244 |
|
| 1245 |
out:
|
| 1246 |
xseg_put_request(peer->xseg, req, pr->portno); |
| 1247 |
return;
|
| 1248 |
|
| 1249 |
out_err:
|
| 1250 |
mio->copyups--; |
| 1251 |
XSEGLOG2(&lc, D, "Mio->copyups: %u", mio->copyups);
|
| 1252 |
mio->err = 1;
|
| 1253 |
if (mn)
|
| 1254 |
signal_mapnode(mn); |
| 1255 |
goto out;
|
| 1256 |
|
| 1257 |
} |
| 1258 |
|
| 1259 |
struct r2o {
|
| 1260 |
struct map_node *mn;
|
| 1261 |
uint64_t offset; |
| 1262 |
uint64_t size; |
| 1263 |
}; |
| 1264 |
|
| 1265 |
static int req2objs(struct peer_req *pr, struct map *map, int write) |
| 1266 |
{
|
| 1267 |
int r = 0; |
| 1268 |
struct peerd *peer = pr->peer;
|
| 1269 |
struct mapper_io *mio = __get_mapper_io(pr);
|
| 1270 |
char *target = xseg_get_target(peer->xseg, pr->req);
|
| 1271 |
uint32_t nr_objs = calc_nr_obj(pr->req); |
| 1272 |
uint64_t size = sizeof(struct xseg_reply_map) + |
| 1273 |
nr_objs * sizeof(struct xseg_reply_map_scatterlist); |
| 1274 |
uint32_t idx, i, ready; |
| 1275 |
uint64_t rem_size, obj_index, obj_offset, obj_size; |
| 1276 |
struct map_node *mn;
|
| 1277 |
mio->copyups = 0;
|
| 1278 |
XSEGLOG2(&lc, D, "Calculated %u nr_objs", nr_objs);
|
| 1279 |
|
| 1280 |
/* get map_nodes of request */
|
| 1281 |
struct r2o *mns = malloc(sizeof(struct r2o)*nr_objs); |
| 1282 |
if (!mns){
|
| 1283 |
XSEGLOG2(&lc, E, "Cannot allocate mns");
|
| 1284 |
return -1; |
| 1285 |
} |
| 1286 |
idx = 0;
|
| 1287 |
rem_size = pr->req->size; |
| 1288 |
obj_index = pr->req->offset / block_size; |
| 1289 |
obj_offset = pr->req->offset & (block_size -1); //modulo |
| 1290 |
obj_size = (obj_offset + rem_size > block_size) ? block_size - obj_offset : rem_size; |
| 1291 |
mn = get_mapnode(map, obj_index); |
| 1292 |
if (!mn) {
|
| 1293 |
XSEGLOG2(&lc, E, "Cannot find obj_index %llu\n", (unsigned long long) obj_index); |
| 1294 |
r = -1;
|
| 1295 |
goto out;
|
| 1296 |
} |
| 1297 |
mns[idx].mn = mn; |
| 1298 |
mns[idx].offset = obj_offset; |
| 1299 |
mns[idx].size = obj_size; |
| 1300 |
rem_size -= obj_size; |
| 1301 |
while (rem_size > 0) { |
| 1302 |
idx++; |
| 1303 |
obj_index++; |
| 1304 |
obj_offset = 0;
|
| 1305 |
obj_size = (rem_size > block_size) ? block_size : rem_size; |
| 1306 |
rem_size -= obj_size; |
| 1307 |
mn = get_mapnode(map, obj_index); |
| 1308 |
if (!mn) {
|
| 1309 |
XSEGLOG2(&lc, E, "Cannot find obj_index %llu\n", (unsigned long long) obj_index); |
| 1310 |
r = -1;
|
| 1311 |
goto out;
|
| 1312 |
} |
| 1313 |
mns[idx].mn = mn; |
| 1314 |
mns[idx].offset = obj_offset; |
| 1315 |
mns[idx].size = obj_size; |
| 1316 |
} |
| 1317 |
if (write) {
|
| 1318 |
ready = 0;
|
| 1319 |
int can_wait = 0; |
| 1320 |
mio->cb=copyup_cb; |
| 1321 |
while (ready < (idx + 1)){ |
| 1322 |
ready = 0;
|
| 1323 |
for (i = 0; i < (idx+1); i++) { |
| 1324 |
mn = mns[i].mn; |
| 1325 |
//do copyups
|
| 1326 |
if (mn->flags & MF_OBJECT_NOT_READY) {
|
| 1327 |
if (can_wait){
|
| 1328 |
wait_on_mapnode(mn, mn->flags & MF_OBJECT_NOT_READY); |
| 1329 |
if (mn->flags & MF_OBJECT_DELETED){
|
| 1330 |
mio->err = 1;
|
| 1331 |
} |
| 1332 |
if (mio->err){
|
| 1333 |
XSEGLOG2(&lc, E, "Mio-err, pending_copyups: %d", mio->copyups);
|
| 1334 |
if (!mio->copyups){
|
| 1335 |
r = -1;
|
| 1336 |
goto out;
|
| 1337 |
} |
| 1338 |
} |
| 1339 |
} |
| 1340 |
} |
| 1341 |
else if (!(mn->flags & MF_OBJECT_EXIST)) { |
| 1342 |
//calc new_target, copy up object
|
| 1343 |
if (copyup_object(peer, mn, pr) == NULL){ |
| 1344 |
XSEGLOG2(&lc, E, "Error in copy up object");
|
| 1345 |
} else {
|
| 1346 |
mio->copyups++; |
| 1347 |
} |
| 1348 |
} else {
|
| 1349 |
ready++; |
| 1350 |
} |
| 1351 |
} |
| 1352 |
can_wait = 1;
|
| 1353 |
} |
| 1354 |
/*
|
| 1355 |
pending_copyups:
|
| 1356 |
while(mio->copyups > 0){
|
| 1357 |
mio->cb = copyup_cb;
|
| 1358 |
wait_on_pr(pr, 0);
|
| 1359 |
ta--;
|
| 1360 |
st_cond_wait(pr->cond);
|
| 1361 |
}
|
| 1362 |
*/
|
| 1363 |
} |
| 1364 |
|
| 1365 |
if (mio->err){
|
| 1366 |
r = -1;
|
| 1367 |
XSEGLOG2(&lc, E, "Mio->err");
|
| 1368 |
goto out;
|
| 1369 |
} |
| 1370 |
|
| 1371 |
/* resize request to fit reply */
|
| 1372 |
char buf[XSEG_MAX_TARGETLEN];
|
| 1373 |
strncpy(buf, target, pr->req->targetlen); |
| 1374 |
r = xseg_resize_request(peer->xseg, pr->req, pr->req->targetlen, size); |
| 1375 |
if (r < 0) { |
| 1376 |
XSEGLOG2(&lc, E, "Cannot resize request");
|
| 1377 |
goto out;
|
| 1378 |
} |
| 1379 |
target = xseg_get_target(peer->xseg, pr->req); |
| 1380 |
strncpy(target, buf, pr->req->targetlen); |
| 1381 |
|
| 1382 |
/* structure reply */
|
| 1383 |
struct xseg_reply_map *reply = (struct xseg_reply_map *) xseg_get_data(peer->xseg, pr->req); |
| 1384 |
reply->cnt = nr_objs; |
| 1385 |
for (i = 0; i < (idx+1); i++) { |
| 1386 |
strncpy(reply->segs[i].target, mns[i].mn->object, mns[i].mn->objectlen); |
| 1387 |
reply->segs[i].targetlen = mns[i].mn->objectlen; |
| 1388 |
reply->segs[i].offset = mns[i].offset; |
| 1389 |
reply->segs[i].size = mns[i].size; |
| 1390 |
} |
| 1391 |
out:
|
| 1392 |
for (i = 0; i < idx; i++) { |
| 1393 |
put_mapnode(mns[i].mn); |
| 1394 |
} |
| 1395 |
free(mns); |
| 1396 |
return r;
|
| 1397 |
} |
| 1398 |
|
| 1399 |
static int do_dropcache(struct peer_req *pr, struct map *map) |
| 1400 |
{
|
| 1401 |
struct map_node *mn;
|
| 1402 |
struct peerd *peer = pr->peer;
|
| 1403 |
struct mapperd *mapper = __get_mapperd(peer);
|
| 1404 |
uint64_t i; |
| 1405 |
XSEGLOG2(&lc, I, "Dropping cache for map %s", map->volume);
|
| 1406 |
map->flags |= MF_MAP_DROPPING_CACHE; |
| 1407 |
for (i = 0; i < calc_map_obj(map); i++) { |
| 1408 |
mn = get_mapnode(map, i); |
| 1409 |
if (mn) {
|
| 1410 |
if (!(mn->flags & MF_OBJECT_DESTROYED)){
|
| 1411 |
//make sure all pending operations on all objects are completed
|
| 1412 |
if (mn->flags & MF_OBJECT_NOT_READY){
|
| 1413 |
wait_on_mapnode(mn, mn->flags & MF_OBJECT_NOT_READY); |
| 1414 |
} |
| 1415 |
mn->flags &= MF_OBJECT_DESTROYED; |
| 1416 |
} |
| 1417 |
put_mapnode(mn); |
| 1418 |
} |
| 1419 |
} |
| 1420 |
map->flags &= ~MF_MAP_DROPPING_CACHE; |
| 1421 |
map->flags |= MF_MAP_DESTROYED; |
| 1422 |
remove_map(mapper, map); |
| 1423 |
XSEGLOG2(&lc, I, "Dropping cache for map %s completed", map->volume);
|
| 1424 |
put_map(map); // put map here to destroy it (matches m->ref = 1 on map create)
|
| 1425 |
return 0; |
| 1426 |
} |
| 1427 |
|
| 1428 |
static int do_info(struct peer_req *pr, struct map *map) |
| 1429 |
{
|
| 1430 |
struct peerd *peer = pr->peer;
|
| 1431 |
struct xseg_reply_info *xinfo = (struct xseg_reply_info *) xseg_get_data(peer->xseg, pr->req); |
| 1432 |
xinfo->size = map->size; |
| 1433 |
return 0; |
| 1434 |
} |
| 1435 |
|
| 1436 |
|
| 1437 |
static int do_close(struct peer_req *pr, struct map *map) |
| 1438 |
{
|
| 1439 |
// struct peerd *peer = pr->peer;
|
| 1440 |
// struct xseg_request *req;
|
| 1441 |
if (map->flags & MF_MAP_EXCLUSIVE)
|
| 1442 |
close_map(pr, map); |
| 1443 |
return do_dropcache(pr, map);
|
| 1444 |
} |
| 1445 |
|
| 1446 |
static int do_destroy(struct peer_req *pr, struct map *map) |
| 1447 |
{
|
| 1448 |
uint64_t i; |
| 1449 |
struct peerd *peer = pr->peer;
|
| 1450 |
struct mapper_io *mio = __get_mapper_io(pr);
|
| 1451 |
struct map_node *mn;
|
| 1452 |
struct xseg_request *req;
|
| 1453 |
|
| 1454 |
XSEGLOG2(&lc, I, "Destroying map %s", map->volume);
|
| 1455 |
map->flags |= MF_MAP_DELETING; |
| 1456 |
req = delete_map(pr, map); |
| 1457 |
if (!req)
|
| 1458 |
return -1; |
| 1459 |
wait_on_pr(pr, (!((req->state & XS_FAILED)||(req->state & XS_SERVED)))); |
| 1460 |
if (req->state & XS_FAILED){
|
| 1461 |
xseg_put_request(peer->xseg, req, pr->portno); |
| 1462 |
map->flags &= ~MF_MAP_DELETING; |
| 1463 |
return -1; |
| 1464 |
} |
| 1465 |
xseg_put_request(peer->xseg, req, pr->portno); |
| 1466 |
//FIXME
|
| 1467 |
uint64_t nr_obj = calc_map_obj(map); |
| 1468 |
uint64_t deleted = 0;
|
| 1469 |
while (deleted < nr_obj){
|
| 1470 |
deleted = 0;
|
| 1471 |
for (i = 0; i < nr_obj; i++){ |
| 1472 |
mn = get_mapnode(map, i); |
| 1473 |
if (mn) {
|
| 1474 |
if (!(mn->flags & MF_OBJECT_DESTROYED)){
|
| 1475 |
if (mn->flags & MF_OBJECT_EXIST){
|
| 1476 |
//make sure all pending operations on all objects are completed
|
| 1477 |
if (mn->flags & MF_OBJECT_NOT_READY){
|
| 1478 |
wait_on_mapnode(mn, mn->flags & MF_OBJECT_NOT_READY); |
| 1479 |
} |
| 1480 |
req = delete_object(pr, mn); |
| 1481 |
if (!req)
|
| 1482 |
if (mio->del_pending){
|
| 1483 |
goto wait_pending;
|
| 1484 |
} else {
|
| 1485 |
continue;
|
| 1486 |
} |
| 1487 |
else {
|
| 1488 |
mio->del_pending++; |
| 1489 |
} |
| 1490 |
} |
| 1491 |
mn->flags &= MF_OBJECT_DESTROYED; |
| 1492 |
} |
| 1493 |
put_mapnode(mn); |
| 1494 |
} |
| 1495 |
deleted++; |
| 1496 |
} |
| 1497 |
wait_pending:
|
| 1498 |
mio->cb = deletion_cb; |
| 1499 |
wait_on_pr(pr, mio->del_pending > 0);
|
| 1500 |
} |
| 1501 |
mio->cb = NULL;
|
| 1502 |
map->flags &= ~MF_MAP_DELETING; |
| 1503 |
XSEGLOG2(&lc, I, "Destroyed map %s", map->volume);
|
| 1504 |
return do_close(pr, map);
|
| 1505 |
} |
| 1506 |
|
| 1507 |
static int do_mapr(struct peer_req *pr, struct map *map) |
| 1508 |
{
|
| 1509 |
struct peerd *peer = pr->peer;
|
| 1510 |
int r = req2objs(pr, map, 0); |
| 1511 |
if (r < 0){ |
| 1512 |
XSEGLOG2(&lc, I, "Map r of map %s, range: %llu-%llu failed",
|
| 1513 |
map->volume, |
| 1514 |
(unsigned long long) pr->req->offset, |
| 1515 |
(unsigned long long) (pr->req->offset + pr->req->size)); |
| 1516 |
return -1; |
| 1517 |
} |
| 1518 |
XSEGLOG2(&lc, I, "Map r of map %s, range: %llu-%llu completed",
|
| 1519 |
map->volume, |
| 1520 |
(unsigned long long) pr->req->offset, |
| 1521 |
(unsigned long long) (pr->req->offset + pr->req->size)); |
| 1522 |
XSEGLOG2(&lc, D, "Req->offset: %llu, req->size: %llu",
|
| 1523 |
(unsigned long long) pr->req->offset, |
| 1524 |
(unsigned long long) pr->req->size); |
| 1525 |
char buf[XSEG_MAX_TARGETLEN+1]; |
| 1526 |
struct xseg_reply_map *reply = (struct xseg_reply_map *) xseg_get_data(peer->xseg, pr->req); |
| 1527 |
int i;
|
| 1528 |
for (i = 0; i < reply->cnt; i++) { |
| 1529 |
XSEGLOG2(&lc, D, "i: %d, reply->cnt: %u",i, reply->cnt);
|
| 1530 |
strncpy(buf, reply->segs[i].target, reply->segs[i].targetlen); |
| 1531 |
buf[reply->segs[i].targetlen] = 0;
|
| 1532 |
XSEGLOG2(&lc, D, "%d: Object: %s, offset: %llu, size: %llu", i, buf,
|
| 1533 |
(unsigned long long) reply->segs[i].offset, |
| 1534 |
(unsigned long long) reply->segs[i].size); |
| 1535 |
} |
| 1536 |
return 0; |
| 1537 |
} |
| 1538 |
|
| 1539 |
static int do_mapw(struct peer_req *pr, struct map *map) |
| 1540 |
{
|
| 1541 |
struct peerd *peer = pr->peer;
|
| 1542 |
int r = req2objs(pr, map, 1); |
| 1543 |
if (r < 0){ |
| 1544 |
XSEGLOG2(&lc, I, "Map w of map %s, range: %llu-%llu failed",
|
| 1545 |
map->volume, |
| 1546 |
(unsigned long long) pr->req->offset, |
| 1547 |
(unsigned long long) (pr->req->offset + pr->req->size)); |
| 1548 |
return -1; |
| 1549 |
} |
| 1550 |
XSEGLOG2(&lc, I, "Map w of map %s, range: %llu-%llu completed",
|
| 1551 |
map->volume, |
| 1552 |
(unsigned long long) pr->req->offset, |
| 1553 |
(unsigned long long) (pr->req->offset + pr->req->size)); |
| 1554 |
XSEGLOG2(&lc, D, "Req->offset: %llu, req->size: %llu",
|
| 1555 |
(unsigned long long) pr->req->offset, |
| 1556 |
(unsigned long long) pr->req->size); |
| 1557 |
char buf[XSEG_MAX_TARGETLEN+1]; |
| 1558 |
struct xseg_reply_map *reply = (struct xseg_reply_map *) xseg_get_data(peer->xseg, pr->req); |
| 1559 |
int i;
|
| 1560 |
for (i = 0; i < reply->cnt; i++) { |
| 1561 |
XSEGLOG2(&lc, D, "i: %d, reply->cnt: %u",i, reply->cnt);
|
| 1562 |
strncpy(buf, reply->segs[i].target, reply->segs[i].targetlen); |
| 1563 |
buf[reply->segs[i].targetlen] = 0;
|
| 1564 |
XSEGLOG2(&lc, D, "%d: Object: %s, offset: %llu, size: %llu", i, buf,
|
| 1565 |
(unsigned long long) reply->segs[i].offset, |
| 1566 |
(unsigned long long) reply->segs[i].size); |
| 1567 |
} |
| 1568 |
return 0; |
| 1569 |
} |
| 1570 |
|
| 1571 |
//here map is the parent map
|
| 1572 |
static int do_clone(struct peer_req *pr, struct map *map) |
| 1573 |
{
|
| 1574 |
/*
|
| 1575 |
FIXME check if clone map exists
|
| 1576 |
clonemap = get_map(pr, target, targetlen, MF_LOAD);
|
| 1577 |
if (clonemap)
|
| 1578 |
do_dropcache(pr, clonemap); // drop map here, rely on get_map_function to drop
|
| 1579 |
// cache on non-exclusive opens or declare a NO_CACHE flag ?
|
| 1580 |
return -1;
|
| 1581 |
*/
|
| 1582 |
|
| 1583 |
int r;
|
| 1584 |
char buf[XSEG_MAX_TARGETLEN];
|
| 1585 |
struct peerd *peer = pr->peer;
|
| 1586 |
struct mapperd *mapper = __get_mapperd(peer);
|
| 1587 |
char *target = xseg_get_target(peer->xseg, pr->req);
|
| 1588 |
struct xseg_request_clone *xclone = (struct xseg_request_clone *) xseg_get_data(peer->xseg, pr->req); |
| 1589 |
XSEGLOG2(&lc, I, "Cloning map %s", map->volume);
|
| 1590 |
struct map *clonemap = create_map(mapper, target, pr->req->targetlen);
|
| 1591 |
if (!clonemap)
|
| 1592 |
return -1; |
| 1593 |
|
| 1594 |
if (xclone->size == -1) |
| 1595 |
clonemap->size = map->size; |
| 1596 |
else
|
| 1597 |
clonemap->size = xclone->size; |
| 1598 |
if (clonemap->size < map->size){
|
| 1599 |
target = xseg_get_target(peer->xseg, pr->req); |
| 1600 |
strncpy(buf, target, pr->req->targetlen); |
| 1601 |
buf[pr->req->targetlen] = 0;
|
| 1602 |
XSEGLOG2(&lc, W, "Requested clone size (%llu) < map size (%llu)"
|
| 1603 |
"\n\t for requested clone %s",
|
| 1604 |
(unsigned long long) xclone->size, |
| 1605 |
(unsigned long long) map->size, buf); |
| 1606 |
goto out_err;
|
| 1607 |
} |
| 1608 |
|
| 1609 |
//alloc and init map_nodes
|
| 1610 |
unsigned long c = clonemap->size/block_size + 1; |
| 1611 |
struct map_node *map_nodes = calloc(c, sizeof(struct map_node)); |
| 1612 |
if (!map_nodes){
|
| 1613 |
goto out_err;
|
| 1614 |
} |
| 1615 |
int i;
|
| 1616 |
for (i = 0; i < clonemap->size/block_size + 1; i++) { |
| 1617 |
struct map_node *mn = get_mapnode(map, i);
|
| 1618 |
if (mn) {
|
| 1619 |
strncpy(map_nodes[i].object, mn->object, mn->objectlen); |
| 1620 |
map_nodes[i].objectlen = mn->objectlen; |
| 1621 |
put_mapnode(mn); |
| 1622 |
} else {
|
| 1623 |
strncpy(map_nodes[i].object, zero_block, strlen(zero_block)); //this should be SHA256_DIGEST_SIZE *2
|
| 1624 |
map_nodes[i].objectlen = strlen(zero_block); |
| 1625 |
} |
| 1626 |
map_nodes[i].object[map_nodes[i].objectlen] = 0; //NULL terminate |
| 1627 |
map_nodes[i].flags = 0;
|
| 1628 |
map_nodes[i].objectidx = i; |
| 1629 |
map_nodes[i].map = clonemap; |
| 1630 |
map_nodes[i].ref = 1;
|
| 1631 |
map_nodes[i].waiters = 0;
|
| 1632 |
map_nodes[i].cond = st_cond_new(); //FIXME errcheck;
|
| 1633 |
r = insert_object(clonemap, &map_nodes[i]); |
| 1634 |
if (r < 0){ |
| 1635 |
XSEGLOG2(&lc, E, "Cannot insert object %d to map %s", i, clonemap->volume);
|
| 1636 |
goto out_err;
|
| 1637 |
} |
| 1638 |
} |
| 1639 |
r = write_map(pr, clonemap); |
| 1640 |
if (r < 0){ |
| 1641 |
XSEGLOG2(&lc, E, "Cannot write map %s", clonemap->volume);
|
| 1642 |
goto out_err;
|
| 1643 |
} |
| 1644 |
return 0; |
| 1645 |
|
| 1646 |
out_err:
|
| 1647 |
put_map(clonemap); |
| 1648 |
return -1; |
| 1649 |
} |
| 1650 |
|
| 1651 |
static int open_load_map(struct peer_req *pr, struct map *map, uint32_t flags) |
| 1652 |
{
|
| 1653 |
int r, opened = 0; |
| 1654 |
retry_open:
|
| 1655 |
if (flags & MF_EXCLUSIVE){
|
| 1656 |
r = open_map(pr, map); |
| 1657 |
if (r < 0) { |
| 1658 |
if (flags & MF_FORCE){
|
| 1659 |
|
| 1660 |
goto retry_open;
|
| 1661 |
} |
| 1662 |
} else {
|
| 1663 |
opened = 1;
|
| 1664 |
} |
| 1665 |
} |
| 1666 |
r = load_map(pr, map); |
| 1667 |
if (r < 0 && opened){ |
| 1668 |
close_map(pr, map); |
| 1669 |
} |
| 1670 |
return r;
|
| 1671 |
} |
| 1672 |
|
| 1673 |
struct map * get_map(struct peer_req *pr, char *name, uint32_t namelen, uint32_t flags) |
| 1674 |
{
|
| 1675 |
int r;
|
| 1676 |
struct peerd *peer = pr->peer;
|
| 1677 |
struct mapperd *mapper = __get_mapperd(peer);
|
| 1678 |
struct map *map = find_map(mapper, name, namelen);
|
| 1679 |
if (!map){
|
| 1680 |
if (flags & MF_LOAD){
|
| 1681 |
map = create_map(mapper, name, namelen); |
| 1682 |
if (!map)
|
| 1683 |
return NULL; |
| 1684 |
r = open_load_map(pr, map, flags); |
| 1685 |
if (r < 0){ |
| 1686 |
do_dropcache(pr, map); |
| 1687 |
return NULL; |
| 1688 |
} |
| 1689 |
} else {
|
| 1690 |
return NULL; |
| 1691 |
} |
| 1692 |
} else if (map->flags & MF_MAP_DESTROYED){ |
| 1693 |
return NULL; |
| 1694 |
} |
| 1695 |
__get_map(map); |
| 1696 |
return map;
|
| 1697 |
|
| 1698 |
} |
| 1699 |
|
| 1700 |
static int map_action(int (action)(struct peer_req *pr, struct map *map), |
| 1701 |
struct peer_req *pr, char *name, uint32_t namelen, uint32_t flags) |
| 1702 |
{
|
| 1703 |
//struct peerd *peer = pr->peer;
|
| 1704 |
struct map *map;
|
| 1705 |
start:
|
| 1706 |
map = get_map(pr, name, namelen, flags); |
| 1707 |
if (!map)
|
| 1708 |
return -1; |
| 1709 |
if (map->flags & MF_MAP_NOT_READY){
|
| 1710 |
wait_on_map(map, (map->flags & MF_MAP_NOT_READY)); |
| 1711 |
put_map(map); |
| 1712 |
goto start;
|
| 1713 |
} |
| 1714 |
int r = action(pr, map);
|
| 1715 |
//always drop cache if map not read exclusively
|
| 1716 |
if (!(map->flags & MF_MAP_EXCLUSIVE))
|
| 1717 |
do_dropcache(pr, map); |
| 1718 |
//maybe capture ref before and compare here?
|
| 1719 |
if (map->ref > 1){ |
| 1720 |
signal_map(map); |
| 1721 |
} |
| 1722 |
put_map(map); |
| 1723 |
return r;
|
| 1724 |
} |
| 1725 |
|
| 1726 |
void * handle_info(struct peer_req *pr) |
| 1727 |
{
|
| 1728 |
struct peerd *peer = pr->peer;
|
| 1729 |
char *target = xseg_get_target(peer->xseg, pr->req);
|
| 1730 |
int r = map_action(do_info, pr, target, pr->req->targetlen, MF_LOAD);
|
| 1731 |
if (r < 0) |
| 1732 |
fail(peer, pr); |
| 1733 |
else
|
| 1734 |
complete(peer, pr); |
| 1735 |
ta--; |
| 1736 |
return NULL; |
| 1737 |
} |
| 1738 |
|
| 1739 |
void * handle_clone(struct peer_req *pr) |
| 1740 |
{
|
| 1741 |
int r;
|
| 1742 |
struct peerd *peer = pr->peer;
|
| 1743 |
struct xseg_request_clone *xclone = (struct xseg_request_clone *) xseg_get_data(peer->xseg, pr->req); |
| 1744 |
if (!xclone) {
|
| 1745 |
r = -1;
|
| 1746 |
goto out;
|
| 1747 |
} |
| 1748 |
if (xclone->targetlen){
|
| 1749 |
r = map_action(do_clone, pr, xclone->target, xclone->targetlen, MF_LOAD); |
| 1750 |
} else {
|
| 1751 |
if (!xclone->size){
|
| 1752 |
r = -1;
|
| 1753 |
} else {
|
| 1754 |
struct map *map;
|
| 1755 |
char *target = xseg_get_target(peer->xseg, pr->req);
|
| 1756 |
XSEGLOG2(&lc, I, "Creating volume");
|
| 1757 |
map = get_map(pr, target, pr->req->targetlen, MF_LOAD); |
| 1758 |
if (map){
|
| 1759 |
XSEGLOG2(&lc, E, "Volume %s exists", map->volume);
|
| 1760 |
if (map->ref <= 2) //initial one + one ref from __get_map |
| 1761 |
do_dropcache(pr, map); //we are the only ones usining this map. Drop the cache.
|
| 1762 |
put_map(map); //matches get_map
|
| 1763 |
r = -1;
|
| 1764 |
goto out;
|
| 1765 |
} |
| 1766 |
//create a new empty map of size
|
| 1767 |
map = create_map(mapper, target, pr->req->targetlen); |
| 1768 |
if (!map){
|
| 1769 |
r = -1;
|
| 1770 |
goto out;
|
| 1771 |
} |
| 1772 |
map->size = xclone->size; |
| 1773 |
//populate_map with zero objects;
|
| 1774 |
uint64_t nr_objs = xclone->size / block_size; |
| 1775 |
if (xclone->size % block_size)
|
| 1776 |
nr_objs++; |
| 1777 |
|
| 1778 |
struct map_node *map_nodes = calloc(nr_objs, sizeof(struct map_node)); |
| 1779 |
if (!map_nodes){
|
| 1780 |
do_dropcache(pr, map); //Since we just created the map, dropping cache should be sufficient.
|
| 1781 |
r = -1;
|
| 1782 |
goto out;
|
| 1783 |
} |
| 1784 |
uint64_t i; |
| 1785 |
for (i = 0; i < nr_objs; i++) { |
| 1786 |
strncpy(map_nodes[i].object, zero_block, strlen(zero_block)); //this should be SHA256_DIGEST_SIZE *2
|
| 1787 |
map_nodes[i].objectlen = strlen(zero_block); |
| 1788 |
map_nodes[i].object[map_nodes[i].objectlen] = 0; //NULL terminate |
| 1789 |
map_nodes[i].flags = 0;
|
| 1790 |
map_nodes[i].objectidx = i; |
| 1791 |
map_nodes[i].map = map; |
| 1792 |
map_nodes[i].ref = 1;
|
| 1793 |
map_nodes[i].waiters = 0;
|
| 1794 |
map_nodes[i].cond = st_cond_new(); //FIXME errcheck;
|
| 1795 |
r = insert_object(map, &map_nodes[i]); |
| 1796 |
if (r < 0){ |
| 1797 |
do_dropcache(pr, map); |
| 1798 |
r = -1;
|
| 1799 |
goto out;
|
| 1800 |
} |
| 1801 |
} |
| 1802 |
r = write_map(pr, map); |
| 1803 |
if (r < 0){ |
| 1804 |
XSEGLOG2(&lc, E, "Cannot write map %s", map->volume);
|
| 1805 |
do_dropcache(pr, map); |
| 1806 |
goto out;
|
| 1807 |
} |
| 1808 |
XSEGLOG2(&lc, I, "Volume %s created", map->volume);
|
| 1809 |
r = 0;
|
| 1810 |
do_dropcache(pr, map); //drop cache here for consistency
|
| 1811 |
} |
| 1812 |
} |
| 1813 |
out:
|
| 1814 |
if (r < 0) |
| 1815 |
fail(peer, pr); |
| 1816 |
else
|
| 1817 |
complete(peer, pr); |
| 1818 |
ta--; |
| 1819 |
return NULL; |
| 1820 |
} |
| 1821 |
|
| 1822 |
void * handle_mapr(struct peer_req *pr) |
| 1823 |
{
|
| 1824 |
struct peerd *peer = pr->peer;
|
| 1825 |
char *target = xseg_get_target(peer->xseg, pr->req);
|
| 1826 |
int r = map_action(do_mapr, pr, target, pr->req->targetlen, MF_LOAD|MF_EXCLUSIVE);
|
| 1827 |
if (r < 0) |
| 1828 |
fail(peer, pr); |
| 1829 |
else
|
| 1830 |
complete(peer, pr); |
| 1831 |
ta--; |
| 1832 |
return NULL; |
| 1833 |
} |
| 1834 |
|
| 1835 |
void * handle_mapw(struct peer_req *pr) |
| 1836 |
{
|
| 1837 |
struct peerd *peer = pr->peer;
|
| 1838 |
char *target = xseg_get_target(peer->xseg, pr->req);
|
| 1839 |
int r = map_action(do_mapw, pr, target, pr->req->targetlen, MF_LOAD|MF_EXCLUSIVE|MF_FORCE);
|
| 1840 |
if (r < 0) |
| 1841 |
fail(peer, pr); |
| 1842 |
else
|
| 1843 |
complete(peer, pr); |
| 1844 |
XSEGLOG2(&lc, D, "Ta: %d", ta);
|
| 1845 |
ta--; |
| 1846 |
return NULL; |
| 1847 |
} |
| 1848 |
|
| 1849 |
void * handle_destroy(struct peer_req *pr) |
| 1850 |
{
|
| 1851 |
struct peerd *peer = pr->peer;
|
| 1852 |
char *target = xseg_get_target(peer->xseg, pr->req);
|
| 1853 |
int r = map_action(do_destroy, pr, target, pr->req->targetlen, MF_LOAD|MF_EXCLUSIVE|MF_FORCE);
|
| 1854 |
if (r < 0) |
| 1855 |
fail(peer, pr); |
| 1856 |
else
|
| 1857 |
complete(peer, pr); |
| 1858 |
ta--; |
| 1859 |
return NULL; |
| 1860 |
} |
| 1861 |
|
| 1862 |
void * handle_close(struct peer_req *pr) |
| 1863 |
{
|
| 1864 |
struct peerd *peer = pr->peer;
|
| 1865 |
char *target = xseg_get_target(peer->xseg, pr->req);
|
| 1866 |
//here we do not want to load
|
| 1867 |
int r = map_action(do_close, pr, target, pr->req->targetlen, MF_EXCLUSIVE|MF_FORCE);
|
| 1868 |
if (r < 0) |
| 1869 |
fail(peer, pr); |
| 1870 |
else
|
| 1871 |
complete(peer, pr); |
| 1872 |
ta--; |
| 1873 |
return NULL; |
| 1874 |
} |
| 1875 |
|
| 1876 |
int dispatch_accepted(struct peerd *peer, struct peer_req *pr, |
| 1877 |
struct xseg_request *req)
|
| 1878 |
{
|
| 1879 |
//struct mapperd *mapper = __get_mapperd(peer);
|
| 1880 |
struct mapper_io *mio = __get_mapper_io(pr);
|
| 1881 |
void *(*action)(struct peer_req *) = NULL; |
| 1882 |
|
| 1883 |
mio->state = ACCEPTED; |
| 1884 |
mio->err = 0;
|
| 1885 |
mio->cb = NULL;
|
| 1886 |
switch (pr->req->op) {
|
| 1887 |
/* primary xseg operations of mapper */
|
| 1888 |
case X_CLONE: action = handle_clone; break; |
| 1889 |
case X_MAPR: action = handle_mapr; break; |
| 1890 |
case X_MAPW: action = handle_mapw; break; |
| 1891 |
// case X_SNAPSHOT: handle_snap(peer, pr, req); break;
|
| 1892 |
case X_INFO: action = handle_info; break; |
| 1893 |
case X_DELETE: action = handle_destroy; break; |
| 1894 |
case X_CLOSE: action = handle_close; break; |
| 1895 |
default: fprintf(stderr, "mydispatch: unknown up\n"); break; |
| 1896 |
} |
| 1897 |
if (action){
|
| 1898 |
ta++; |
| 1899 |
mio->active = 1;
|
| 1900 |
st_thread_create(action, pr, 0, 0); |
| 1901 |
} |
| 1902 |
return 0; |
| 1903 |
|
| 1904 |
} |
| 1905 |
|
| 1906 |
int dispatch(struct peerd *peer, struct peer_req *pr, struct xseg_request *req, |
| 1907 |
enum dispatch_reason reason)
|
| 1908 |
{
|
| 1909 |
struct mapperd *mapper = __get_mapperd(peer);
|
| 1910 |
(void) mapper;
|
| 1911 |
struct mapper_io *mio = __get_mapper_io(pr);
|
| 1912 |
(void) mio;
|
| 1913 |
|
| 1914 |
|
| 1915 |
if (reason == dispatch_accept)
|
| 1916 |
dispatch_accepted(peer, pr, req); |
| 1917 |
else {
|
| 1918 |
if (mio->cb){
|
| 1919 |
mio->cb(pr, req); |
| 1920 |
} else {
|
| 1921 |
signal_pr(pr); |
| 1922 |
} |
| 1923 |
} |
| 1924 |
return 0; |
| 1925 |
} |
| 1926 |
|
| 1927 |
int custom_peer_init(struct peerd *peer, int argc, char *argv[]) |
| 1928 |
{
|
| 1929 |
int i;
|
| 1930 |
unsigned char buf[SHA256_DIGEST_SIZE]; |
| 1931 |
unsigned char *zero; |
| 1932 |
|
| 1933 |
gcry_control (GCRYCTL_SET_THREAD_CBS, &gcry_threads_pthread); |
| 1934 |
|
| 1935 |
/* Version check should be the very first call because it
|
| 1936 |
makes sure that important subsystems are intialized. */
|
| 1937 |
gcry_check_version (NULL);
|
| 1938 |
|
| 1939 |
/* Disable secure memory. */
|
| 1940 |
gcry_control (GCRYCTL_DISABLE_SECMEM, 0);
|
| 1941 |
|
| 1942 |
/* Tell Libgcrypt that initialization has completed. */
|
| 1943 |
gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
|
| 1944 |
|
| 1945 |
/* calculate out magic sha hash value */
|
| 1946 |
gcry_md_hash_buffer(GCRY_MD_SHA256, magic_sha256, magic_string, strlen(magic_string)); |
| 1947 |
|
| 1948 |
/* calculate zero block */
|
| 1949 |
//FIXME check hash value
|
| 1950 |
zero = malloc(block_size); |
| 1951 |
memset(zero, 0, block_size);
|
| 1952 |
gcry_md_hash_buffer(GCRY_MD_SHA256, buf, zero, block_size); |
| 1953 |
for (i = 0; i < SHA256_DIGEST_SIZE; ++i) |
| 1954 |
sprintf(zero_block + 2*i, "%02x", buf[i]); |
| 1955 |
printf("%s \n", zero_block);
|
| 1956 |
free(zero); |
| 1957 |
|
| 1958 |
//FIXME error checks
|
| 1959 |
struct mapperd *mapperd = malloc(sizeof(struct mapperd)); |
| 1960 |
peer->priv = mapperd; |
| 1961 |
mapper = mapperd; |
| 1962 |
mapper->hashmaps = xhash_new(3, STRING);
|
| 1963 |
|
| 1964 |
for (i = 0; i < peer->nr_ops; i++) { |
| 1965 |
struct mapper_io *mio = malloc(sizeof(struct mapper_io)); |
| 1966 |
mio->copyups_nodes = xhash_new(3, INTEGER);
|
| 1967 |
mio->copyups = 0;
|
| 1968 |
mio->err = 0;
|
| 1969 |
mio->active = 0;
|
| 1970 |
peer->peer_reqs[i].priv = mio; |
| 1971 |
} |
| 1972 |
|
| 1973 |
for (i = 0; i < argc; i++) { |
| 1974 |
if (!strcmp(argv[i], "-bp") && (i+1) < argc){ |
| 1975 |
mapper->bportno = atoi(argv[i+1]);
|
| 1976 |
i += 1;
|
| 1977 |
continue;
|
| 1978 |
} |
| 1979 |
if (!strcmp(argv[i], "-mbp") && (i+1) < argc){ |
| 1980 |
mapper->mbportno = atoi(argv[i+1]);
|
| 1981 |
i += 1;
|
| 1982 |
continue;
|
| 1983 |
} |
| 1984 |
/* enforce only one thread */
|
| 1985 |
if (!strcmp(argv[i], "-t") && (i+1) < argc){ |
| 1986 |
int t = atoi(argv[i+1]); |
| 1987 |
if (t != 1) { |
| 1988 |
printf("ERROR: mapperd supports only one thread for the moment\nExiting ...\n");
|
| 1989 |
return -1; |
| 1990 |
} |
| 1991 |
i += 1;
|
| 1992 |
continue;
|
| 1993 |
} |
| 1994 |
} |
| 1995 |
|
| 1996 |
const struct sched_param param = { .sched_priority = 99 }; |
| 1997 |
sched_setscheduler(syscall(SYS_gettid), SCHED_FIFO, ¶m); |
| 1998 |
|
| 1999 |
|
| 2000 |
// test_map(peer);
|
| 2001 |
|
| 2002 |
return 0; |
| 2003 |
} |
| 2004 |
|
| 2005 |
void print_obj(struct map_node *mn) |
| 2006 |
{
|
| 2007 |
fprintf(stderr, "[%llu]object name: %s[%u] exists: %c\n",
|
| 2008 |
(unsigned long long) mn->objectidx, mn->object, |
| 2009 |
(unsigned int) mn->objectlen, |
| 2010 |
(mn->flags & MF_OBJECT_EXIST) ? 'y' : 'n'); |
| 2011 |
} |
| 2012 |
|
| 2013 |
void print_map(struct map *m) |
| 2014 |
{
|
| 2015 |
uint64_t nr_objs = m->size/block_size; |
| 2016 |
if (m->size % block_size)
|
| 2017 |
nr_objs++; |
| 2018 |
fprintf(stderr, "Volume name: %s[%u], size: %llu, nr_objs: %llu\n",
|
| 2019 |
m->volume, m->volumelen, |
| 2020 |
(unsigned long long) m->size, |
| 2021 |
(unsigned long long) nr_objs); |
| 2022 |
uint64_t i; |
| 2023 |
struct map_node *mn;
|
| 2024 |
if (nr_objs > 1000000) //FIXME to protect against invalid volume size |
| 2025 |
return;
|
| 2026 |
for (i = 0; i < nr_objs; i++) { |
| 2027 |
mn = find_object(m, i); |
| 2028 |
if (!mn){
|
| 2029 |
printf("object idx [%llu] not found!\n", (unsigned long long) i); |
| 2030 |
continue;
|
| 2031 |
} |
| 2032 |
print_obj(mn); |
| 2033 |
} |
| 2034 |
} |
| 2035 |
|
| 2036 |
/*
|
| 2037 |
void test_map(struct peerd *peer)
|
| 2038 |
{
|
| 2039 |
int i,j, ret;
|
| 2040 |
//struct sha256_ctx sha256ctx;
|
| 2041 |
unsigned char buf[SHA256_DIGEST_SIZE];
|
| 2042 |
char buf_new[XSEG_MAX_TARGETLEN + 20];
|
| 2043 |
struct map *m = malloc(sizeof(struct map));
|
| 2044 |
strncpy(m->volume, "012345678901234567890123456789ab012345678901234567890123456789ab", XSEG_MAX_TARGETLEN + 1);
|
| 2045 |
m->volume[XSEG_MAX_TARGETLEN] = 0;
|
| 2046 |
strncpy(buf_new, m->volume, XSEG_MAX_TARGETLEN);
|
| 2047 |
buf_new[XSEG_MAX_TARGETLEN + 19] = 0;
|
| 2048 |
m->volumelen = XSEG_MAX_TARGETLEN;
|
| 2049 |
m->size = 100*block_size;
|
| 2050 |
m->objects = xhash_new(3, INTEGER);
|
| 2051 |
struct map_node *map_node = calloc(100, sizeof(struct map_node));
|
| 2052 |
for (i = 0; i < 100; i++) {
|
| 2053 |
sprintf(buf_new +XSEG_MAX_TARGETLEN, "%u", i);
|
| 2054 |
gcry_md_hash_buffer(GCRY_MD_SHA256, buf, buf_new, strlen(buf_new));
|
| 2055 |
|
| 2056 |
for (j = 0; j < SHA256_DIGEST_SIZE; j++) {
|
| 2057 |
sprintf(map_node[i].object + 2*j, "%02x", buf[j]);
|
| 2058 |
}
|
| 2059 |
map_node[i].objectidx = i;
|
| 2060 |
map_node[i].objectlen = XSEG_MAX_TARGETLEN;
|
| 2061 |
map_node[i].flags = MF_OBJECT_EXIST;
|
| 2062 |
ret = insert_object(m, &map_node[i]);
|
| 2063 |
}
|
| 2064 |
|
| 2065 |
char *data = malloc(block_size);
|
| 2066 |
mapheader_to_map(m, data);
|
| 2067 |
uint64_t pos = mapheader_size;
|
| 2068 |
|
| 2069 |
for (i = 0; i < 100; i++) {
|
| 2070 |
map_node = find_object(m, i);
|
| 2071 |
if (!map_node){
|
| 2072 |
printf("no object node %d \n", i);
|
| 2073 |
exit(1);
|
| 2074 |
}
|
| 2075 |
object_to_map(data+pos, map_node);
|
| 2076 |
pos += objectsize_in_map;
|
| 2077 |
}
|
| 2078 |
// print_map(m);
|
| 2079 |
|
| 2080 |
struct map *m2 = malloc(sizeof(struct map));
|
| 2081 |
strncpy(m2->volume, "012345678901234567890123456789ab012345678901234567890123456789ab", XSEG_MAX_TARGETLEN +1);
|
| 2082 |
m->volume[XSEG_MAX_TARGETLEN] = 0;
|
| 2083 |
m->volumelen = XSEG_MAX_TARGETLEN;
|
| 2084 |
|
| 2085 |
m2->objects = xhash_new(3, INTEGER);
|
| 2086 |
ret = read_map(peer, m2, data);
|
| 2087 |
// print_map(m2);
|
| 2088 |
|
| 2089 |
int fd = open(m->volume, O_CREAT|O_WRONLY, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH);
|
| 2090 |
ssize_t r, sum = 0;
|
| 2091 |
while (sum < block_size) {
|
| 2092 |
r = write(fd, data + sum, block_size -sum);
|
| 2093 |
if (r < 0){
|
| 2094 |
perror("write");
|
| 2095 |
printf("write error\n");
|
| 2096 |
exit(1);
|
| 2097 |
}
|
| 2098 |
sum += r;
|
| 2099 |
}
|
| 2100 |
close(fd);
|
| 2101 |
map_node = find_object(m, 0);
|
| 2102 |
free(map_node);
|
| 2103 |
free(m);
|
| 2104 |
}
|
| 2105 |
*/
|