root / blockdev.c @ 814589c4
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1 | 666daa68 | Markus Armbruster | /*
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2 | 666daa68 | Markus Armbruster | * QEMU host block devices
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3 | 666daa68 | Markus Armbruster | *
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4 | 666daa68 | Markus Armbruster | * Copyright (c) 2003-2008 Fabrice Bellard
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5 | 666daa68 | Markus Armbruster | *
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6 | 666daa68 | Markus Armbruster | * This work is licensed under the terms of the GNU GPL, version 2 or
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7 | 666daa68 | Markus Armbruster | * later. See the COPYING file in the top-level directory.
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8 | 666daa68 | Markus Armbruster | */
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9 | 666daa68 | Markus Armbruster | |
10 | 666daa68 | Markus Armbruster | #include "blockdev.h" |
11 | 2b584959 | Markus Armbruster | #include "hw/block-common.h" |
12 | 666daa68 | Markus Armbruster | #include "monitor.h" |
13 | 666daa68 | Markus Armbruster | #include "qerror.h" |
14 | 666daa68 | Markus Armbruster | #include "qemu-option.h" |
15 | 666daa68 | Markus Armbruster | #include "qemu-config.h" |
16 | 12bd451f | Stefan Hajnoczi | #include "qemu-objects.h" |
17 | 666daa68 | Markus Armbruster | #include "sysemu.h" |
18 | 9063f814 | Ryan Harper | #include "block_int.h" |
19 | a4dea8a9 | Luiz Capitulino | #include "qmp-commands.h" |
20 | 12bd451f | Stefan Hajnoczi | #include "trace.h" |
21 | c9344f22 | Anthony Liguori | #include "arch_init.h" |
22 | 666daa68 | Markus Armbruster | |
23 | c9b62a7e | Markus Armbruster | static QTAILQ_HEAD(drivelist, DriveInfo) drives = QTAILQ_HEAD_INITIALIZER(drives);
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24 | 666daa68 | Markus Armbruster | |
25 | 1960966d | Markus Armbruster | static const char *const if_name[IF_COUNT] = { |
26 | 1960966d | Markus Armbruster | [IF_NONE] = "none",
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27 | 1960966d | Markus Armbruster | [IF_IDE] = "ide",
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28 | 1960966d | Markus Armbruster | [IF_SCSI] = "scsi",
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29 | 1960966d | Markus Armbruster | [IF_FLOPPY] = "floppy",
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30 | 1960966d | Markus Armbruster | [IF_PFLASH] = "pflash",
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31 | 1960966d | Markus Armbruster | [IF_MTD] = "mtd",
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32 | 1960966d | Markus Armbruster | [IF_SD] = "sd",
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33 | 1960966d | Markus Armbruster | [IF_VIRTIO] = "virtio",
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34 | 1960966d | Markus Armbruster | [IF_XEN] = "xen",
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35 | 1960966d | Markus Armbruster | }; |
36 | 1960966d | Markus Armbruster | |
37 | 1960966d | Markus Armbruster | static const int if_max_devs[IF_COUNT] = { |
38 | 27d6bf40 | Markus Armbruster | /*
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39 | 27d6bf40 | Markus Armbruster | * Do not change these numbers! They govern how drive option
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40 | 27d6bf40 | Markus Armbruster | * index maps to unit and bus. That mapping is ABI.
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41 | 27d6bf40 | Markus Armbruster | *
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42 | 27d6bf40 | Markus Armbruster | * All controllers used to imlement if=T drives need to support
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43 | 27d6bf40 | Markus Armbruster | * if_max_devs[T] units, for any T with if_max_devs[T] != 0.
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44 | 27d6bf40 | Markus Armbruster | * Otherwise, some index values map to "impossible" bus, unit
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45 | 27d6bf40 | Markus Armbruster | * values.
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46 | 27d6bf40 | Markus Armbruster | *
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47 | 27d6bf40 | Markus Armbruster | * For instance, if you change [IF_SCSI] to 255, -drive
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48 | 27d6bf40 | Markus Armbruster | * if=scsi,index=12 no longer means bus=1,unit=5, but
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49 | 27d6bf40 | Markus Armbruster | * bus=0,unit=12. With an lsi53c895a controller (7 units max),
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50 | 27d6bf40 | Markus Armbruster | * the drive can't be set up. Regression.
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51 | 27d6bf40 | Markus Armbruster | */
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52 | 27d6bf40 | Markus Armbruster | [IF_IDE] = 2,
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53 | 27d6bf40 | Markus Armbruster | [IF_SCSI] = 7,
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54 | 1960966d | Markus Armbruster | }; |
55 | 1960966d | Markus Armbruster | |
56 | 14bafc54 | Markus Armbruster | /*
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57 | 14bafc54 | Markus Armbruster | * We automatically delete the drive when a device using it gets
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58 | 14bafc54 | Markus Armbruster | * unplugged. Questionable feature, but we can't just drop it.
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59 | 14bafc54 | Markus Armbruster | * Device models call blockdev_mark_auto_del() to schedule the
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60 | 14bafc54 | Markus Armbruster | * automatic deletion, and generic qdev code calls blockdev_auto_del()
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61 | 14bafc54 | Markus Armbruster | * when deletion is actually safe.
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62 | 14bafc54 | Markus Armbruster | */
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63 | 14bafc54 | Markus Armbruster | void blockdev_mark_auto_del(BlockDriverState *bs)
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64 | 14bafc54 | Markus Armbruster | { |
65 | 14bafc54 | Markus Armbruster | DriveInfo *dinfo = drive_get_by_blockdev(bs); |
66 | 14bafc54 | Markus Armbruster | |
67 | 12bde0ee | Paolo Bonzini | if (bs->job) {
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68 | 12bde0ee | Paolo Bonzini | block_job_cancel(bs->job); |
69 | 12bde0ee | Paolo Bonzini | } |
70 | 0fc0f1fa | Ryan Harper | if (dinfo) {
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71 | 0fc0f1fa | Ryan Harper | dinfo->auto_del = 1;
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72 | 0fc0f1fa | Ryan Harper | } |
73 | 14bafc54 | Markus Armbruster | } |
74 | 14bafc54 | Markus Armbruster | |
75 | 14bafc54 | Markus Armbruster | void blockdev_auto_del(BlockDriverState *bs)
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76 | 14bafc54 | Markus Armbruster | { |
77 | 14bafc54 | Markus Armbruster | DriveInfo *dinfo = drive_get_by_blockdev(bs); |
78 | 14bafc54 | Markus Armbruster | |
79 | 0fc0f1fa | Ryan Harper | if (dinfo && dinfo->auto_del) {
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80 | 84fb3925 | Marcelo Tosatti | drive_put_ref(dinfo); |
81 | 14bafc54 | Markus Armbruster | } |
82 | 14bafc54 | Markus Armbruster | } |
83 | 14bafc54 | Markus Armbruster | |
84 | 505a7fb1 | Markus Armbruster | static int drive_index_to_bus_id(BlockInterfaceType type, int index) |
85 | 505a7fb1 | Markus Armbruster | { |
86 | 505a7fb1 | Markus Armbruster | int max_devs = if_max_devs[type];
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87 | 505a7fb1 | Markus Armbruster | return max_devs ? index / max_devs : 0; |
88 | 505a7fb1 | Markus Armbruster | } |
89 | 505a7fb1 | Markus Armbruster | |
90 | 505a7fb1 | Markus Armbruster | static int drive_index_to_unit_id(BlockInterfaceType type, int index) |
91 | 505a7fb1 | Markus Armbruster | { |
92 | 505a7fb1 | Markus Armbruster | int max_devs = if_max_devs[type];
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93 | 505a7fb1 | Markus Armbruster | return max_devs ? index % max_devs : index;
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94 | 505a7fb1 | Markus Armbruster | } |
95 | 505a7fb1 | Markus Armbruster | |
96 | 2292ddae | Markus Armbruster | QemuOpts *drive_def(const char *optstr) |
97 | 2292ddae | Markus Armbruster | { |
98 | 2292ddae | Markus Armbruster | return qemu_opts_parse(qemu_find_opts("drive"), optstr, 0); |
99 | 2292ddae | Markus Armbruster | } |
100 | 2292ddae | Markus Armbruster | |
101 | 2292ddae | Markus Armbruster | QemuOpts *drive_add(BlockInterfaceType type, int index, const char *file, |
102 | 5645b0f4 | Markus Armbruster | const char *optstr) |
103 | 666daa68 | Markus Armbruster | { |
104 | 666daa68 | Markus Armbruster | QemuOpts *opts; |
105 | 2292ddae | Markus Armbruster | char buf[32]; |
106 | 666daa68 | Markus Armbruster | |
107 | 2292ddae | Markus Armbruster | opts = drive_def(optstr); |
108 | 666daa68 | Markus Armbruster | if (!opts) {
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109 | 666daa68 | Markus Armbruster | return NULL; |
110 | 666daa68 | Markus Armbruster | } |
111 | 2292ddae | Markus Armbruster | if (type != IF_DEFAULT) {
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112 | 2292ddae | Markus Armbruster | qemu_opt_set(opts, "if", if_name[type]);
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113 | 2292ddae | Markus Armbruster | } |
114 | 2292ddae | Markus Armbruster | if (index >= 0) { |
115 | 2292ddae | Markus Armbruster | snprintf(buf, sizeof(buf), "%d", index); |
116 | 2292ddae | Markus Armbruster | qemu_opt_set(opts, "index", buf);
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117 | 2292ddae | Markus Armbruster | } |
118 | 666daa68 | Markus Armbruster | if (file)
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119 | 666daa68 | Markus Armbruster | qemu_opt_set(opts, "file", file);
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120 | 666daa68 | Markus Armbruster | return opts;
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121 | 666daa68 | Markus Armbruster | } |
122 | 666daa68 | Markus Armbruster | |
123 | 666daa68 | Markus Armbruster | DriveInfo *drive_get(BlockInterfaceType type, int bus, int unit) |
124 | 666daa68 | Markus Armbruster | { |
125 | 666daa68 | Markus Armbruster | DriveInfo *dinfo; |
126 | 666daa68 | Markus Armbruster | |
127 | 666daa68 | Markus Armbruster | /* seek interface, bus and unit */
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128 | 666daa68 | Markus Armbruster | |
129 | 666daa68 | Markus Armbruster | QTAILQ_FOREACH(dinfo, &drives, next) { |
130 | 666daa68 | Markus Armbruster | if (dinfo->type == type &&
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131 | 666daa68 | Markus Armbruster | dinfo->bus == bus && |
132 | 666daa68 | Markus Armbruster | dinfo->unit == unit) |
133 | 666daa68 | Markus Armbruster | return dinfo;
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134 | 666daa68 | Markus Armbruster | } |
135 | 666daa68 | Markus Armbruster | |
136 | 666daa68 | Markus Armbruster | return NULL; |
137 | 666daa68 | Markus Armbruster | } |
138 | 666daa68 | Markus Armbruster | |
139 | f1bd51ac | Markus Armbruster | DriveInfo *drive_get_by_index(BlockInterfaceType type, int index)
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140 | f1bd51ac | Markus Armbruster | { |
141 | f1bd51ac | Markus Armbruster | return drive_get(type,
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142 | f1bd51ac | Markus Armbruster | drive_index_to_bus_id(type, index), |
143 | f1bd51ac | Markus Armbruster | drive_index_to_unit_id(type, index)); |
144 | f1bd51ac | Markus Armbruster | } |
145 | f1bd51ac | Markus Armbruster | |
146 | 666daa68 | Markus Armbruster | int drive_get_max_bus(BlockInterfaceType type)
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147 | 666daa68 | Markus Armbruster | { |
148 | 666daa68 | Markus Armbruster | int max_bus;
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149 | 666daa68 | Markus Armbruster | DriveInfo *dinfo; |
150 | 666daa68 | Markus Armbruster | |
151 | 666daa68 | Markus Armbruster | max_bus = -1;
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152 | 666daa68 | Markus Armbruster | QTAILQ_FOREACH(dinfo, &drives, next) { |
153 | 666daa68 | Markus Armbruster | if(dinfo->type == type &&
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154 | 666daa68 | Markus Armbruster | dinfo->bus > max_bus) |
155 | 666daa68 | Markus Armbruster | max_bus = dinfo->bus; |
156 | 666daa68 | Markus Armbruster | } |
157 | 666daa68 | Markus Armbruster | return max_bus;
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158 | 666daa68 | Markus Armbruster | } |
159 | 666daa68 | Markus Armbruster | |
160 | 13839974 | Markus Armbruster | /* Get a block device. This should only be used for single-drive devices
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161 | 13839974 | Markus Armbruster | (e.g. SD/Floppy/MTD). Multi-disk devices (scsi/ide) should use the
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162 | 13839974 | Markus Armbruster | appropriate bus. */
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163 | 13839974 | Markus Armbruster | DriveInfo *drive_get_next(BlockInterfaceType type) |
164 | 13839974 | Markus Armbruster | { |
165 | 13839974 | Markus Armbruster | static int next_block_unit[IF_COUNT]; |
166 | 13839974 | Markus Armbruster | |
167 | 13839974 | Markus Armbruster | return drive_get(type, 0, next_block_unit[type]++); |
168 | 13839974 | Markus Armbruster | } |
169 | 13839974 | Markus Armbruster | |
170 | e4700e59 | Markus Armbruster | DriveInfo *drive_get_by_blockdev(BlockDriverState *bs) |
171 | 666daa68 | Markus Armbruster | { |
172 | 666daa68 | Markus Armbruster | DriveInfo *dinfo; |
173 | 666daa68 | Markus Armbruster | |
174 | 666daa68 | Markus Armbruster | QTAILQ_FOREACH(dinfo, &drives, next) { |
175 | e4700e59 | Markus Armbruster | if (dinfo->bdrv == bs) {
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176 | e4700e59 | Markus Armbruster | return dinfo;
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177 | e4700e59 | Markus Armbruster | } |
178 | 666daa68 | Markus Armbruster | } |
179 | e4700e59 | Markus Armbruster | return NULL; |
180 | 666daa68 | Markus Armbruster | } |
181 | 666daa68 | Markus Armbruster | |
182 | 666daa68 | Markus Armbruster | static void bdrv_format_print(void *opaque, const char *name) |
183 | 666daa68 | Markus Armbruster | { |
184 | 807105a7 | Markus Armbruster | error_printf(" %s", name);
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185 | 666daa68 | Markus Armbruster | } |
186 | 666daa68 | Markus Armbruster | |
187 | 84fb3925 | Marcelo Tosatti | static void drive_uninit(DriveInfo *dinfo) |
188 | 666daa68 | Markus Armbruster | { |
189 | 666daa68 | Markus Armbruster | qemu_opts_del(dinfo->opts); |
190 | 666daa68 | Markus Armbruster | bdrv_delete(dinfo->bdrv); |
191 | 7267c094 | Anthony Liguori | g_free(dinfo->id); |
192 | 666daa68 | Markus Armbruster | QTAILQ_REMOVE(&drives, dinfo, next); |
193 | 7267c094 | Anthony Liguori | g_free(dinfo); |
194 | 666daa68 | Markus Armbruster | } |
195 | 666daa68 | Markus Armbruster | |
196 | 84fb3925 | Marcelo Tosatti | void drive_put_ref(DriveInfo *dinfo)
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197 | 84fb3925 | Marcelo Tosatti | { |
198 | 84fb3925 | Marcelo Tosatti | assert(dinfo->refcount); |
199 | 84fb3925 | Marcelo Tosatti | if (--dinfo->refcount == 0) { |
200 | 84fb3925 | Marcelo Tosatti | drive_uninit(dinfo); |
201 | 84fb3925 | Marcelo Tosatti | } |
202 | 84fb3925 | Marcelo Tosatti | } |
203 | 84fb3925 | Marcelo Tosatti | |
204 | 84fb3925 | Marcelo Tosatti | void drive_get_ref(DriveInfo *dinfo)
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205 | 84fb3925 | Marcelo Tosatti | { |
206 | 84fb3925 | Marcelo Tosatti | dinfo->refcount++; |
207 | 84fb3925 | Marcelo Tosatti | } |
208 | 84fb3925 | Marcelo Tosatti | |
209 | aa398a5c | Stefan Hajnoczi | typedef struct { |
210 | aa398a5c | Stefan Hajnoczi | QEMUBH *bh; |
211 | aa398a5c | Stefan Hajnoczi | DriveInfo *dinfo; |
212 | aa398a5c | Stefan Hajnoczi | } DrivePutRefBH; |
213 | aa398a5c | Stefan Hajnoczi | |
214 | aa398a5c | Stefan Hajnoczi | static void drive_put_ref_bh(void *opaque) |
215 | aa398a5c | Stefan Hajnoczi | { |
216 | aa398a5c | Stefan Hajnoczi | DrivePutRefBH *s = opaque; |
217 | aa398a5c | Stefan Hajnoczi | |
218 | aa398a5c | Stefan Hajnoczi | drive_put_ref(s->dinfo); |
219 | aa398a5c | Stefan Hajnoczi | qemu_bh_delete(s->bh); |
220 | aa398a5c | Stefan Hajnoczi | g_free(s); |
221 | aa398a5c | Stefan Hajnoczi | } |
222 | aa398a5c | Stefan Hajnoczi | |
223 | aa398a5c | Stefan Hajnoczi | /*
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224 | aa398a5c | Stefan Hajnoczi | * Release a drive reference in a BH
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225 | aa398a5c | Stefan Hajnoczi | *
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226 | aa398a5c | Stefan Hajnoczi | * It is not possible to use drive_put_ref() from a callback function when the
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227 | aa398a5c | Stefan Hajnoczi | * callers still need the drive. In such cases we schedule a BH to release the
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228 | aa398a5c | Stefan Hajnoczi | * reference.
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229 | aa398a5c | Stefan Hajnoczi | */
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230 | aa398a5c | Stefan Hajnoczi | static void drive_put_ref_bh_schedule(DriveInfo *dinfo) |
231 | aa398a5c | Stefan Hajnoczi | { |
232 | aa398a5c | Stefan Hajnoczi | DrivePutRefBH *s; |
233 | aa398a5c | Stefan Hajnoczi | |
234 | aa398a5c | Stefan Hajnoczi | s = g_new(DrivePutRefBH, 1);
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235 | aa398a5c | Stefan Hajnoczi | s->bh = qemu_bh_new(drive_put_ref_bh, s); |
236 | aa398a5c | Stefan Hajnoczi | s->dinfo = dinfo; |
237 | aa398a5c | Stefan Hajnoczi | qemu_bh_schedule(s->bh); |
238 | aa398a5c | Stefan Hajnoczi | } |
239 | aa398a5c | Stefan Hajnoczi | |
240 | 666daa68 | Markus Armbruster | static int parse_block_error_action(const char *buf, int is_read) |
241 | 666daa68 | Markus Armbruster | { |
242 | 666daa68 | Markus Armbruster | if (!strcmp(buf, "ignore")) { |
243 | 666daa68 | Markus Armbruster | return BLOCK_ERR_IGNORE;
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244 | 666daa68 | Markus Armbruster | } else if (!is_read && !strcmp(buf, "enospc")) { |
245 | 666daa68 | Markus Armbruster | return BLOCK_ERR_STOP_ENOSPC;
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246 | 666daa68 | Markus Armbruster | } else if (!strcmp(buf, "stop")) { |
247 | 666daa68 | Markus Armbruster | return BLOCK_ERR_STOP_ANY;
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248 | 666daa68 | Markus Armbruster | } else if (!strcmp(buf, "report")) { |
249 | 666daa68 | Markus Armbruster | return BLOCK_ERR_REPORT;
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250 | 666daa68 | Markus Armbruster | } else {
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251 | 807105a7 | Markus Armbruster | error_report("'%s' invalid %s error action",
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252 | 807105a7 | Markus Armbruster | buf, is_read ? "read" : "write"); |
253 | 666daa68 | Markus Armbruster | return -1; |
254 | 666daa68 | Markus Armbruster | } |
255 | 666daa68 | Markus Armbruster | } |
256 | 666daa68 | Markus Armbruster | |
257 | 0563e191 | Zhi Yong Wu | static bool do_check_io_limits(BlockIOLimit *io_limits) |
258 | 0563e191 | Zhi Yong Wu | { |
259 | 0563e191 | Zhi Yong Wu | bool bps_flag;
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260 | 0563e191 | Zhi Yong Wu | bool iops_flag;
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261 | 0563e191 | Zhi Yong Wu | |
262 | 0563e191 | Zhi Yong Wu | assert(io_limits); |
263 | 0563e191 | Zhi Yong Wu | |
264 | 0563e191 | Zhi Yong Wu | bps_flag = (io_limits->bps[BLOCK_IO_LIMIT_TOTAL] != 0)
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265 | 0563e191 | Zhi Yong Wu | && ((io_limits->bps[BLOCK_IO_LIMIT_READ] != 0)
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266 | 0563e191 | Zhi Yong Wu | || (io_limits->bps[BLOCK_IO_LIMIT_WRITE] != 0));
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267 | 0563e191 | Zhi Yong Wu | iops_flag = (io_limits->iops[BLOCK_IO_LIMIT_TOTAL] != 0)
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268 | 0563e191 | Zhi Yong Wu | && ((io_limits->iops[BLOCK_IO_LIMIT_READ] != 0)
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269 | 0563e191 | Zhi Yong Wu | || (io_limits->iops[BLOCK_IO_LIMIT_WRITE] != 0));
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270 | 0563e191 | Zhi Yong Wu | if (bps_flag || iops_flag) {
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271 | 0563e191 | Zhi Yong Wu | return false; |
272 | 0563e191 | Zhi Yong Wu | } |
273 | 0563e191 | Zhi Yong Wu | |
274 | 0563e191 | Zhi Yong Wu | return true; |
275 | 0563e191 | Zhi Yong Wu | } |
276 | 0563e191 | Zhi Yong Wu | |
277 | 319ae529 | Markus Armbruster | DriveInfo *drive_init(QemuOpts *opts, int default_to_scsi)
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278 | 666daa68 | Markus Armbruster | { |
279 | 666daa68 | Markus Armbruster | const char *buf; |
280 | 666daa68 | Markus Armbruster | const char *file = NULL; |
281 | 666daa68 | Markus Armbruster | const char *serial; |
282 | 666daa68 | Markus Armbruster | const char *mediastr = ""; |
283 | 666daa68 | Markus Armbruster | BlockInterfaceType type; |
284 | 666daa68 | Markus Armbruster | enum { MEDIA_DISK, MEDIA_CDROM } media;
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285 | 666daa68 | Markus Armbruster | int bus_id, unit_id;
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286 | 666daa68 | Markus Armbruster | int cyls, heads, secs, translation;
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287 | 666daa68 | Markus Armbruster | BlockDriver *drv = NULL;
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288 | 666daa68 | Markus Armbruster | int max_devs;
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289 | 666daa68 | Markus Armbruster | int index;
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290 | 666daa68 | Markus Armbruster | int ro = 0; |
291 | 666daa68 | Markus Armbruster | int bdrv_flags = 0; |
292 | 666daa68 | Markus Armbruster | int on_read_error, on_write_error;
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293 | 666daa68 | Markus Armbruster | const char *devaddr; |
294 | 666daa68 | Markus Armbruster | DriveInfo *dinfo; |
295 | 0563e191 | Zhi Yong Wu | BlockIOLimit io_limits; |
296 | 666daa68 | Markus Armbruster | int snapshot = 0; |
297 | fb0490f6 | Stefan Hajnoczi | bool copy_on_read;
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298 | 666daa68 | Markus Armbruster | int ret;
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299 | 666daa68 | Markus Armbruster | |
300 | 666daa68 | Markus Armbruster | translation = BIOS_ATA_TRANSLATION_AUTO; |
301 | 666daa68 | Markus Armbruster | media = MEDIA_DISK; |
302 | 666daa68 | Markus Armbruster | |
303 | 666daa68 | Markus Armbruster | /* extract parameters */
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304 | 666daa68 | Markus Armbruster | bus_id = qemu_opt_get_number(opts, "bus", 0); |
305 | 666daa68 | Markus Armbruster | unit_id = qemu_opt_get_number(opts, "unit", -1); |
306 | 666daa68 | Markus Armbruster | index = qemu_opt_get_number(opts, "index", -1); |
307 | 666daa68 | Markus Armbruster | |
308 | 666daa68 | Markus Armbruster | cyls = qemu_opt_get_number(opts, "cyls", 0); |
309 | 666daa68 | Markus Armbruster | heads = qemu_opt_get_number(opts, "heads", 0); |
310 | 666daa68 | Markus Armbruster | secs = qemu_opt_get_number(opts, "secs", 0); |
311 | 666daa68 | Markus Armbruster | |
312 | 666daa68 | Markus Armbruster | snapshot = qemu_opt_get_bool(opts, "snapshot", 0); |
313 | 666daa68 | Markus Armbruster | ro = qemu_opt_get_bool(opts, "readonly", 0); |
314 | fb0490f6 | Stefan Hajnoczi | copy_on_read = qemu_opt_get_bool(opts, "copy-on-read", false); |
315 | 666daa68 | Markus Armbruster | |
316 | 666daa68 | Markus Armbruster | file = qemu_opt_get(opts, "file");
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317 | 666daa68 | Markus Armbruster | serial = qemu_opt_get(opts, "serial");
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318 | 666daa68 | Markus Armbruster | |
319 | 666daa68 | Markus Armbruster | if ((buf = qemu_opt_get(opts, "if")) != NULL) { |
320 | 1960966d | Markus Armbruster | for (type = 0; type < IF_COUNT && strcmp(buf, if_name[type]); type++) |
321 | 1960966d | Markus Armbruster | ; |
322 | 1960966d | Markus Armbruster | if (type == IF_COUNT) {
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323 | 807105a7 | Markus Armbruster | error_report("unsupported bus type '%s'", buf);
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324 | 666daa68 | Markus Armbruster | return NULL; |
325 | 666daa68 | Markus Armbruster | } |
326 | 2d3999fe | Luiz Capitulino | } else {
|
327 | 2d3999fe | Luiz Capitulino | type = default_to_scsi ? IF_SCSI : IF_IDE; |
328 | 666daa68 | Markus Armbruster | } |
329 | 2d3999fe | Luiz Capitulino | |
330 | 1960966d | Markus Armbruster | max_devs = if_max_devs[type]; |
331 | 666daa68 | Markus Armbruster | |
332 | 666daa68 | Markus Armbruster | if (cyls || heads || secs) {
|
333 | aaea3f36 | Markus Armbruster | if (cyls < 1) { |
334 | 807105a7 | Markus Armbruster | error_report("invalid physical cyls number");
|
335 | 666daa68 | Markus Armbruster | return NULL; |
336 | 666daa68 | Markus Armbruster | } |
337 | aaea3f36 | Markus Armbruster | if (heads < 1) { |
338 | 807105a7 | Markus Armbruster | error_report("invalid physical heads number");
|
339 | 666daa68 | Markus Armbruster | return NULL; |
340 | 666daa68 | Markus Armbruster | } |
341 | aaea3f36 | Markus Armbruster | if (secs < 1) { |
342 | 807105a7 | Markus Armbruster | error_report("invalid physical secs number");
|
343 | 666daa68 | Markus Armbruster | return NULL; |
344 | 666daa68 | Markus Armbruster | } |
345 | 666daa68 | Markus Armbruster | } |
346 | 666daa68 | Markus Armbruster | |
347 | 666daa68 | Markus Armbruster | if ((buf = qemu_opt_get(opts, "trans")) != NULL) { |
348 | 666daa68 | Markus Armbruster | if (!cyls) {
|
349 | e4080f9b | Markus Armbruster | error_report("'%s' trans must be used with cyls, heads and secs",
|
350 | 807105a7 | Markus Armbruster | buf); |
351 | 666daa68 | Markus Armbruster | return NULL; |
352 | 666daa68 | Markus Armbruster | } |
353 | 666daa68 | Markus Armbruster | if (!strcmp(buf, "none")) |
354 | 666daa68 | Markus Armbruster | translation = BIOS_ATA_TRANSLATION_NONE; |
355 | 666daa68 | Markus Armbruster | else if (!strcmp(buf, "lba")) |
356 | 666daa68 | Markus Armbruster | translation = BIOS_ATA_TRANSLATION_LBA; |
357 | 666daa68 | Markus Armbruster | else if (!strcmp(buf, "auto")) |
358 | 666daa68 | Markus Armbruster | translation = BIOS_ATA_TRANSLATION_AUTO; |
359 | 666daa68 | Markus Armbruster | else {
|
360 | 807105a7 | Markus Armbruster | error_report("'%s' invalid translation type", buf);
|
361 | 666daa68 | Markus Armbruster | return NULL; |
362 | 666daa68 | Markus Armbruster | } |
363 | 666daa68 | Markus Armbruster | } |
364 | 666daa68 | Markus Armbruster | |
365 | 666daa68 | Markus Armbruster | if ((buf = qemu_opt_get(opts, "media")) != NULL) { |
366 | 666daa68 | Markus Armbruster | if (!strcmp(buf, "disk")) { |
367 | 666daa68 | Markus Armbruster | media = MEDIA_DISK; |
368 | 666daa68 | Markus Armbruster | } else if (!strcmp(buf, "cdrom")) { |
369 | 666daa68 | Markus Armbruster | if (cyls || secs || heads) {
|
370 | e7ff8f0e | Luiz Capitulino | error_report("CHS can't be set with media=%s", buf);
|
371 | 666daa68 | Markus Armbruster | return NULL; |
372 | 666daa68 | Markus Armbruster | } |
373 | 666daa68 | Markus Armbruster | media = MEDIA_CDROM; |
374 | 666daa68 | Markus Armbruster | } else {
|
375 | 807105a7 | Markus Armbruster | error_report("'%s' invalid media", buf);
|
376 | 666daa68 | Markus Armbruster | return NULL; |
377 | 666daa68 | Markus Armbruster | } |
378 | 666daa68 | Markus Armbruster | } |
379 | 666daa68 | Markus Armbruster | |
380 | 666daa68 | Markus Armbruster | if ((buf = qemu_opt_get(opts, "cache")) != NULL) { |
381 | c3993cdc | Stefan Hajnoczi | if (bdrv_parse_cache_flags(buf, &bdrv_flags) != 0) { |
382 | c3993cdc | Stefan Hajnoczi | error_report("invalid cache option");
|
383 | c3993cdc | Stefan Hajnoczi | return NULL; |
384 | 666daa68 | Markus Armbruster | } |
385 | 666daa68 | Markus Armbruster | } |
386 | 666daa68 | Markus Armbruster | |
387 | 666daa68 | Markus Armbruster | #ifdef CONFIG_LINUX_AIO
|
388 | 666daa68 | Markus Armbruster | if ((buf = qemu_opt_get(opts, "aio")) != NULL) { |
389 | 666daa68 | Markus Armbruster | if (!strcmp(buf, "native")) { |
390 | 666daa68 | Markus Armbruster | bdrv_flags |= BDRV_O_NATIVE_AIO; |
391 | 666daa68 | Markus Armbruster | } else if (!strcmp(buf, "threads")) { |
392 | 666daa68 | Markus Armbruster | /* this is the default */
|
393 | 666daa68 | Markus Armbruster | } else {
|
394 | 807105a7 | Markus Armbruster | error_report("invalid aio option");
|
395 | 666daa68 | Markus Armbruster | return NULL; |
396 | 666daa68 | Markus Armbruster | } |
397 | 666daa68 | Markus Armbruster | } |
398 | 666daa68 | Markus Armbruster | #endif
|
399 | 666daa68 | Markus Armbruster | |
400 | 666daa68 | Markus Armbruster | if ((buf = qemu_opt_get(opts, "format")) != NULL) { |
401 | 666daa68 | Markus Armbruster | if (strcmp(buf, "?") == 0) { |
402 | 807105a7 | Markus Armbruster | error_printf("Supported formats:");
|
403 | 807105a7 | Markus Armbruster | bdrv_iterate_format(bdrv_format_print, NULL);
|
404 | 807105a7 | Markus Armbruster | error_printf("\n");
|
405 | 807105a7 | Markus Armbruster | return NULL; |
406 | 666daa68 | Markus Armbruster | } |
407 | 666daa68 | Markus Armbruster | drv = bdrv_find_whitelisted_format(buf); |
408 | 666daa68 | Markus Armbruster | if (!drv) {
|
409 | 807105a7 | Markus Armbruster | error_report("'%s' invalid format", buf);
|
410 | 666daa68 | Markus Armbruster | return NULL; |
411 | 666daa68 | Markus Armbruster | } |
412 | 666daa68 | Markus Armbruster | } |
413 | 666daa68 | Markus Armbruster | |
414 | 0563e191 | Zhi Yong Wu | /* disk I/O throttling */
|
415 | 0563e191 | Zhi Yong Wu | io_limits.bps[BLOCK_IO_LIMIT_TOTAL] = |
416 | 0563e191 | Zhi Yong Wu | qemu_opt_get_number(opts, "bps", 0); |
417 | 0563e191 | Zhi Yong Wu | io_limits.bps[BLOCK_IO_LIMIT_READ] = |
418 | 0563e191 | Zhi Yong Wu | qemu_opt_get_number(opts, "bps_rd", 0); |
419 | 0563e191 | Zhi Yong Wu | io_limits.bps[BLOCK_IO_LIMIT_WRITE] = |
420 | 0563e191 | Zhi Yong Wu | qemu_opt_get_number(opts, "bps_wr", 0); |
421 | 0563e191 | Zhi Yong Wu | io_limits.iops[BLOCK_IO_LIMIT_TOTAL] = |
422 | 0563e191 | Zhi Yong Wu | qemu_opt_get_number(opts, "iops", 0); |
423 | 0563e191 | Zhi Yong Wu | io_limits.iops[BLOCK_IO_LIMIT_READ] = |
424 | 0563e191 | Zhi Yong Wu | qemu_opt_get_number(opts, "iops_rd", 0); |
425 | 0563e191 | Zhi Yong Wu | io_limits.iops[BLOCK_IO_LIMIT_WRITE] = |
426 | 0563e191 | Zhi Yong Wu | qemu_opt_get_number(opts, "iops_wr", 0); |
427 | 0563e191 | Zhi Yong Wu | |
428 | 0563e191 | Zhi Yong Wu | if (!do_check_io_limits(&io_limits)) {
|
429 | 0563e191 | Zhi Yong Wu | error_report("bps(iops) and bps_rd/bps_wr(iops_rd/iops_wr) "
|
430 | 0563e191 | Zhi Yong Wu | "cannot be used at the same time");
|
431 | 0563e191 | Zhi Yong Wu | return NULL; |
432 | 0563e191 | Zhi Yong Wu | } |
433 | 0563e191 | Zhi Yong Wu | |
434 | 666daa68 | Markus Armbruster | on_write_error = BLOCK_ERR_STOP_ENOSPC; |
435 | 666daa68 | Markus Armbruster | if ((buf = qemu_opt_get(opts, "werror")) != NULL) { |
436 | 666daa68 | Markus Armbruster | if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != IF_NONE) {
|
437 | 807105a7 | Markus Armbruster | error_report("werror is not supported by this bus type");
|
438 | 666daa68 | Markus Armbruster | return NULL; |
439 | 666daa68 | Markus Armbruster | } |
440 | 666daa68 | Markus Armbruster | |
441 | 666daa68 | Markus Armbruster | on_write_error = parse_block_error_action(buf, 0);
|
442 | 666daa68 | Markus Armbruster | if (on_write_error < 0) { |
443 | 666daa68 | Markus Armbruster | return NULL; |
444 | 666daa68 | Markus Armbruster | } |
445 | 666daa68 | Markus Armbruster | } |
446 | 666daa68 | Markus Armbruster | |
447 | 666daa68 | Markus Armbruster | on_read_error = BLOCK_ERR_REPORT; |
448 | 666daa68 | Markus Armbruster | if ((buf = qemu_opt_get(opts, "rerror")) != NULL) { |
449 | 5dba48a8 | Kevin Wolf | if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && type != IF_NONE) {
|
450 | 807105a7 | Markus Armbruster | error_report("rerror is not supported by this bus type");
|
451 | 666daa68 | Markus Armbruster | return NULL; |
452 | 666daa68 | Markus Armbruster | } |
453 | 666daa68 | Markus Armbruster | |
454 | 666daa68 | Markus Armbruster | on_read_error = parse_block_error_action(buf, 1);
|
455 | 666daa68 | Markus Armbruster | if (on_read_error < 0) { |
456 | 666daa68 | Markus Armbruster | return NULL; |
457 | 666daa68 | Markus Armbruster | } |
458 | 666daa68 | Markus Armbruster | } |
459 | 666daa68 | Markus Armbruster | |
460 | 666daa68 | Markus Armbruster | if ((devaddr = qemu_opt_get(opts, "addr")) != NULL) { |
461 | 666daa68 | Markus Armbruster | if (type != IF_VIRTIO) {
|
462 | 807105a7 | Markus Armbruster | error_report("addr is not supported by this bus type");
|
463 | 666daa68 | Markus Armbruster | return NULL; |
464 | 666daa68 | Markus Armbruster | } |
465 | 666daa68 | Markus Armbruster | } |
466 | 666daa68 | Markus Armbruster | |
467 | 666daa68 | Markus Armbruster | /* compute bus and unit according index */
|
468 | 666daa68 | Markus Armbruster | |
469 | 666daa68 | Markus Armbruster | if (index != -1) { |
470 | 666daa68 | Markus Armbruster | if (bus_id != 0 || unit_id != -1) { |
471 | 807105a7 | Markus Armbruster | error_report("index cannot be used with bus and unit");
|
472 | 666daa68 | Markus Armbruster | return NULL; |
473 | 666daa68 | Markus Armbruster | } |
474 | 505a7fb1 | Markus Armbruster | bus_id = drive_index_to_bus_id(type, index); |
475 | 505a7fb1 | Markus Armbruster | unit_id = drive_index_to_unit_id(type, index); |
476 | 666daa68 | Markus Armbruster | } |
477 | 666daa68 | Markus Armbruster | |
478 | 666daa68 | Markus Armbruster | /* if user doesn't specify a unit_id,
|
479 | 666daa68 | Markus Armbruster | * try to find the first free
|
480 | 666daa68 | Markus Armbruster | */
|
481 | 666daa68 | Markus Armbruster | |
482 | 666daa68 | Markus Armbruster | if (unit_id == -1) { |
483 | 666daa68 | Markus Armbruster | unit_id = 0;
|
484 | 666daa68 | Markus Armbruster | while (drive_get(type, bus_id, unit_id) != NULL) { |
485 | 666daa68 | Markus Armbruster | unit_id++; |
486 | 666daa68 | Markus Armbruster | if (max_devs && unit_id >= max_devs) {
|
487 | 666daa68 | Markus Armbruster | unit_id -= max_devs; |
488 | 666daa68 | Markus Armbruster | bus_id++; |
489 | 666daa68 | Markus Armbruster | } |
490 | 666daa68 | Markus Armbruster | } |
491 | 666daa68 | Markus Armbruster | } |
492 | 666daa68 | Markus Armbruster | |
493 | 666daa68 | Markus Armbruster | /* check unit id */
|
494 | 666daa68 | Markus Armbruster | |
495 | 666daa68 | Markus Armbruster | if (max_devs && unit_id >= max_devs) {
|
496 | 807105a7 | Markus Armbruster | error_report("unit %d too big (max is %d)",
|
497 | 807105a7 | Markus Armbruster | unit_id, max_devs - 1);
|
498 | 666daa68 | Markus Armbruster | return NULL; |
499 | 666daa68 | Markus Armbruster | } |
500 | 666daa68 | Markus Armbruster | |
501 | 666daa68 | Markus Armbruster | /*
|
502 | 4e5d9b57 | Markus Armbruster | * catch multiple definitions
|
503 | 666daa68 | Markus Armbruster | */
|
504 | 666daa68 | Markus Armbruster | |
505 | 666daa68 | Markus Armbruster | if (drive_get(type, bus_id, unit_id) != NULL) { |
506 | 4e5d9b57 | Markus Armbruster | error_report("drive with bus=%d, unit=%d (index=%d) exists",
|
507 | 4e5d9b57 | Markus Armbruster | bus_id, unit_id, index); |
508 | 666daa68 | Markus Armbruster | return NULL; |
509 | 666daa68 | Markus Armbruster | } |
510 | 666daa68 | Markus Armbruster | |
511 | 666daa68 | Markus Armbruster | /* init */
|
512 | 666daa68 | Markus Armbruster | |
513 | 7267c094 | Anthony Liguori | dinfo = g_malloc0(sizeof(*dinfo));
|
514 | 666daa68 | Markus Armbruster | if ((buf = qemu_opts_id(opts)) != NULL) { |
515 | 7267c094 | Anthony Liguori | dinfo->id = g_strdup(buf); |
516 | 666daa68 | Markus Armbruster | } else {
|
517 | 666daa68 | Markus Armbruster | /* no id supplied -> create one */
|
518 | 7267c094 | Anthony Liguori | dinfo->id = g_malloc0(32);
|
519 | 666daa68 | Markus Armbruster | if (type == IF_IDE || type == IF_SCSI)
|
520 | 666daa68 | Markus Armbruster | mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd"; |
521 | 666daa68 | Markus Armbruster | if (max_devs)
|
522 | 666daa68 | Markus Armbruster | snprintf(dinfo->id, 32, "%s%i%s%i", |
523 | 79d21d5b | Markus Armbruster | if_name[type], bus_id, mediastr, unit_id); |
524 | 666daa68 | Markus Armbruster | else
|
525 | 666daa68 | Markus Armbruster | snprintf(dinfo->id, 32, "%s%s%i", |
526 | 79d21d5b | Markus Armbruster | if_name[type], mediastr, unit_id); |
527 | 666daa68 | Markus Armbruster | } |
528 | 666daa68 | Markus Armbruster | dinfo->bdrv = bdrv_new(dinfo->id); |
529 | 666daa68 | Markus Armbruster | dinfo->devaddr = devaddr; |
530 | 666daa68 | Markus Armbruster | dinfo->type = type; |
531 | 666daa68 | Markus Armbruster | dinfo->bus = bus_id; |
532 | 666daa68 | Markus Armbruster | dinfo->unit = unit_id; |
533 | 317bb412 | Markus Armbruster | dinfo->cyls = cyls; |
534 | 317bb412 | Markus Armbruster | dinfo->heads = heads; |
535 | 317bb412 | Markus Armbruster | dinfo->secs = secs; |
536 | 317bb412 | Markus Armbruster | dinfo->trans = translation; |
537 | 666daa68 | Markus Armbruster | dinfo->opts = opts; |
538 | 84fb3925 | Marcelo Tosatti | dinfo->refcount = 1;
|
539 | 577d0a38 | Markus Armbruster | dinfo->serial = serial; |
540 | 666daa68 | Markus Armbruster | QTAILQ_INSERT_TAIL(&drives, dinfo, next); |
541 | 666daa68 | Markus Armbruster | |
542 | abd7f68d | Markus Armbruster | bdrv_set_on_error(dinfo->bdrv, on_read_error, on_write_error); |
543 | abd7f68d | Markus Armbruster | |
544 | 0563e191 | Zhi Yong Wu | /* disk I/O throttling */
|
545 | 0563e191 | Zhi Yong Wu | bdrv_set_io_limits(dinfo->bdrv, &io_limits); |
546 | 0563e191 | Zhi Yong Wu | |
547 | 666daa68 | Markus Armbruster | switch(type) {
|
548 | 666daa68 | Markus Armbruster | case IF_IDE:
|
549 | 666daa68 | Markus Armbruster | case IF_SCSI:
|
550 | 666daa68 | Markus Armbruster | case IF_XEN:
|
551 | 666daa68 | Markus Armbruster | case IF_NONE:
|
552 | 2b584959 | Markus Armbruster | dinfo->media_cd = media == MEDIA_CDROM; |
553 | 666daa68 | Markus Armbruster | break;
|
554 | 666daa68 | Markus Armbruster | case IF_SD:
|
555 | 666daa68 | Markus Armbruster | case IF_FLOPPY:
|
556 | 666daa68 | Markus Armbruster | case IF_PFLASH:
|
557 | 666daa68 | Markus Armbruster | case IF_MTD:
|
558 | 666daa68 | Markus Armbruster | break;
|
559 | 666daa68 | Markus Armbruster | case IF_VIRTIO:
|
560 | 666daa68 | Markus Armbruster | /* add virtio block device */
|
561 | 8be7e7e4 | Luiz Capitulino | opts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, NULL); |
562 | eeb9c1b5 | Anthony Liguori | if (arch_type == QEMU_ARCH_S390X) {
|
563 | eeb9c1b5 | Anthony Liguori | qemu_opt_set(opts, "driver", "virtio-blk-s390"); |
564 | eeb9c1b5 | Anthony Liguori | } else {
|
565 | eeb9c1b5 | Anthony Liguori | qemu_opt_set(opts, "driver", "virtio-blk-pci"); |
566 | eeb9c1b5 | Anthony Liguori | } |
567 | 666daa68 | Markus Armbruster | qemu_opt_set(opts, "drive", dinfo->id);
|
568 | 666daa68 | Markus Armbruster | if (devaddr)
|
569 | 666daa68 | Markus Armbruster | qemu_opt_set(opts, "addr", devaddr);
|
570 | 666daa68 | Markus Armbruster | break;
|
571 | 2292ddae | Markus Armbruster | default:
|
572 | 666daa68 | Markus Armbruster | abort(); |
573 | 666daa68 | Markus Armbruster | } |
574 | dd5b0d71 | Markus Armbruster | if (!file || !*file) {
|
575 | 319ae529 | Markus Armbruster | return dinfo;
|
576 | 666daa68 | Markus Armbruster | } |
577 | 666daa68 | Markus Armbruster | if (snapshot) {
|
578 | 666daa68 | Markus Armbruster | /* always use cache=unsafe with snapshot */
|
579 | 666daa68 | Markus Armbruster | bdrv_flags &= ~BDRV_O_CACHE_MASK; |
580 | 666daa68 | Markus Armbruster | bdrv_flags |= (BDRV_O_SNAPSHOT|BDRV_O_CACHE_WB|BDRV_O_NO_FLUSH); |
581 | 666daa68 | Markus Armbruster | } |
582 | 666daa68 | Markus Armbruster | |
583 | fb0490f6 | Stefan Hajnoczi | if (copy_on_read) {
|
584 | fb0490f6 | Stefan Hajnoczi | bdrv_flags |= BDRV_O_COPY_ON_READ; |
585 | fb0490f6 | Stefan Hajnoczi | } |
586 | fb0490f6 | Stefan Hajnoczi | |
587 | ed9d4205 | Benoรฎt Canet | if (runstate_check(RUN_STATE_INMIGRATE)) {
|
588 | ed9d4205 | Benoรฎt Canet | bdrv_flags |= BDRV_O_INCOMING; |
589 | ed9d4205 | Benoรฎt Canet | } |
590 | ed9d4205 | Benoรฎt Canet | |
591 | 666daa68 | Markus Armbruster | if (media == MEDIA_CDROM) {
|
592 | 666daa68 | Markus Armbruster | /* CDROM is fine for any interface, don't check. */
|
593 | 666daa68 | Markus Armbruster | ro = 1;
|
594 | 666daa68 | Markus Armbruster | } else if (ro == 1) { |
595 | 1e9eb78a | Jordan Justen | if (type != IF_SCSI && type != IF_VIRTIO && type != IF_FLOPPY &&
|
596 | 1e9eb78a | Jordan Justen | type != IF_NONE && type != IF_PFLASH) { |
597 | 807105a7 | Markus Armbruster | error_report("readonly not supported by this bus type");
|
598 | a9ae2bff | Markus Armbruster | goto err;
|
599 | 666daa68 | Markus Armbruster | } |
600 | 666daa68 | Markus Armbruster | } |
601 | 666daa68 | Markus Armbruster | |
602 | 666daa68 | Markus Armbruster | bdrv_flags |= ro ? 0 : BDRV_O_RDWR;
|
603 | 666daa68 | Markus Armbruster | |
604 | 04d4abe9 | Stefan Hajnoczi | if (ro && copy_on_read) {
|
605 | 04d4abe9 | Stefan Hajnoczi | error_report("warning: disabling copy_on_read on readonly drive");
|
606 | 04d4abe9 | Stefan Hajnoczi | } |
607 | 04d4abe9 | Stefan Hajnoczi | |
608 | 666daa68 | Markus Armbruster | ret = bdrv_open(dinfo->bdrv, file, bdrv_flags, drv); |
609 | 666daa68 | Markus Armbruster | if (ret < 0) { |
610 | 807105a7 | Markus Armbruster | error_report("could not open disk image %s: %s",
|
611 | 807105a7 | Markus Armbruster | file, strerror(-ret)); |
612 | a9ae2bff | Markus Armbruster | goto err;
|
613 | 666daa68 | Markus Armbruster | } |
614 | 666daa68 | Markus Armbruster | |
615 | 666daa68 | Markus Armbruster | if (bdrv_key_required(dinfo->bdrv))
|
616 | 666daa68 | Markus Armbruster | autostart = 0;
|
617 | 666daa68 | Markus Armbruster | return dinfo;
|
618 | a9ae2bff | Markus Armbruster | |
619 | a9ae2bff | Markus Armbruster | err:
|
620 | a9ae2bff | Markus Armbruster | bdrv_delete(dinfo->bdrv); |
621 | 7267c094 | Anthony Liguori | g_free(dinfo->id); |
622 | a9ae2bff | Markus Armbruster | QTAILQ_REMOVE(&drives, dinfo, next); |
623 | 7267c094 | Anthony Liguori | g_free(dinfo); |
624 | a9ae2bff | Markus Armbruster | return NULL; |
625 | 666daa68 | Markus Armbruster | } |
626 | 666daa68 | Markus Armbruster | |
627 | 666daa68 | Markus Armbruster | void do_commit(Monitor *mon, const QDict *qdict) |
628 | 666daa68 | Markus Armbruster | { |
629 | 666daa68 | Markus Armbruster | const char *device = qdict_get_str(qdict, "device"); |
630 | 6ab4b5ab | Markus Armbruster | BlockDriverState *bs; |
631 | e8877497 | Stefan Hajnoczi | int ret;
|
632 | 666daa68 | Markus Armbruster | |
633 | 6ab4b5ab | Markus Armbruster | if (!strcmp(device, "all")) { |
634 | e8877497 | Stefan Hajnoczi | ret = bdrv_commit_all(); |
635 | e8877497 | Stefan Hajnoczi | if (ret == -EBUSY) {
|
636 | e8877497 | Stefan Hajnoczi | qerror_report(QERR_DEVICE_IN_USE, device); |
637 | e8877497 | Stefan Hajnoczi | return;
|
638 | e8877497 | Stefan Hajnoczi | } |
639 | 6ab4b5ab | Markus Armbruster | } else {
|
640 | 6ab4b5ab | Markus Armbruster | bs = bdrv_find(device); |
641 | ac59eb95 | Markus Armbruster | if (!bs) {
|
642 | ac59eb95 | Markus Armbruster | qerror_report(QERR_DEVICE_NOT_FOUND, device); |
643 | ac59eb95 | Markus Armbruster | return;
|
644 | 6ab4b5ab | Markus Armbruster | } |
645 | 2d3735d3 | Stefan Hajnoczi | ret = bdrv_commit(bs); |
646 | 2d3735d3 | Stefan Hajnoczi | if (ret == -EBUSY) {
|
647 | 2d3735d3 | Stefan Hajnoczi | qerror_report(QERR_DEVICE_IN_USE, device); |
648 | 2d3735d3 | Stefan Hajnoczi | return;
|
649 | 2d3735d3 | Stefan Hajnoczi | } |
650 | 666daa68 | Markus Armbruster | } |
651 | 666daa68 | Markus Armbruster | } |
652 | 666daa68 | Markus Armbruster | |
653 | 6cc2a415 | Paolo Bonzini | static void blockdev_do_action(int kind, void *data, Error **errp) |
654 | 6cc2a415 | Paolo Bonzini | { |
655 | 6cc2a415 | Paolo Bonzini | BlockdevAction action; |
656 | 6cc2a415 | Paolo Bonzini | BlockdevActionList list; |
657 | 6cc2a415 | Paolo Bonzini | |
658 | 6cc2a415 | Paolo Bonzini | action.kind = kind; |
659 | 6cc2a415 | Paolo Bonzini | action.data = data; |
660 | 6cc2a415 | Paolo Bonzini | list.value = &action; |
661 | 6cc2a415 | Paolo Bonzini | list.next = NULL;
|
662 | 6cc2a415 | Paolo Bonzini | qmp_transaction(&list, errp); |
663 | 6cc2a415 | Paolo Bonzini | } |
664 | 6cc2a415 | Paolo Bonzini | |
665 | 6106e249 | Luiz Capitulino | void qmp_blockdev_snapshot_sync(const char *device, const char *snapshot_file, |
666 | 6106e249 | Luiz Capitulino | bool has_format, const char *format, |
667 | 6cc2a415 | Paolo Bonzini | bool has_mode, enum NewImageMode mode, |
668 | 6106e249 | Luiz Capitulino | Error **errp) |
669 | f8882568 | Jes Sorensen | { |
670 | 6cc2a415 | Paolo Bonzini | BlockdevSnapshot snapshot = { |
671 | 6cc2a415 | Paolo Bonzini | .device = (char *) device,
|
672 | 6cc2a415 | Paolo Bonzini | .snapshot_file = (char *) snapshot_file,
|
673 | 6cc2a415 | Paolo Bonzini | .has_format = has_format, |
674 | 6cc2a415 | Paolo Bonzini | .format = (char *) format,
|
675 | 6cc2a415 | Paolo Bonzini | .has_mode = has_mode, |
676 | 6cc2a415 | Paolo Bonzini | .mode = mode, |
677 | 6cc2a415 | Paolo Bonzini | }; |
678 | 6cc2a415 | Paolo Bonzini | blockdev_do_action(BLOCKDEV_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC, &snapshot, |
679 | 6cc2a415 | Paolo Bonzini | errp); |
680 | f8882568 | Jes Sorensen | } |
681 | f8882568 | Jes Sorensen | |
682 | 8802d1fd | Jeff Cody | |
683 | 8802d1fd | Jeff Cody | /* New and old BlockDriverState structs for group snapshots */
|
684 | 52e7c241 | Paolo Bonzini | typedef struct BlkTransactionStates { |
685 | 8802d1fd | Jeff Cody | BlockDriverState *old_bs; |
686 | 8802d1fd | Jeff Cody | BlockDriverState *new_bs; |
687 | 52e7c241 | Paolo Bonzini | QSIMPLEQ_ENTRY(BlkTransactionStates) entry; |
688 | 52e7c241 | Paolo Bonzini | } BlkTransactionStates; |
689 | 8802d1fd | Jeff Cody | |
690 | 8802d1fd | Jeff Cody | /*
|
691 | 8802d1fd | Jeff Cody | * 'Atomic' group snapshots. The snapshots are taken as a set, and if any fail
|
692 | 8802d1fd | Jeff Cody | * then we do not pivot any of the devices in the group, and abandon the
|
693 | 8802d1fd | Jeff Cody | * snapshots
|
694 | 8802d1fd | Jeff Cody | */
|
695 | 52e7c241 | Paolo Bonzini | void qmp_transaction(BlockdevActionList *dev_list, Error **errp)
|
696 | 8802d1fd | Jeff Cody | { |
697 | 8802d1fd | Jeff Cody | int ret = 0; |
698 | 52e7c241 | Paolo Bonzini | BlockdevActionList *dev_entry = dev_list; |
699 | 52e7c241 | Paolo Bonzini | BlkTransactionStates *states, *next; |
700 | 8802d1fd | Jeff Cody | |
701 | 52e7c241 | Paolo Bonzini | QSIMPLEQ_HEAD(snap_bdrv_states, BlkTransactionStates) snap_bdrv_states; |
702 | 8802d1fd | Jeff Cody | QSIMPLEQ_INIT(&snap_bdrv_states); |
703 | 8802d1fd | Jeff Cody | |
704 | 8802d1fd | Jeff Cody | /* drain all i/o before any snapshots */
|
705 | 8802d1fd | Jeff Cody | bdrv_drain_all(); |
706 | 8802d1fd | Jeff Cody | |
707 | 8802d1fd | Jeff Cody | /* We don't do anything in this loop that commits us to the snapshot */
|
708 | 8802d1fd | Jeff Cody | while (NULL != dev_entry) { |
709 | 52e7c241 | Paolo Bonzini | BlockdevAction *dev_info = NULL;
|
710 | 52e7c241 | Paolo Bonzini | BlockDriver *proto_drv; |
711 | 52e7c241 | Paolo Bonzini | BlockDriver *drv; |
712 | 52e7c241 | Paolo Bonzini | int flags;
|
713 | bc8b094f | Paolo Bonzini | enum NewImageMode mode;
|
714 | bc8b094f | Paolo Bonzini | const char *new_image_file; |
715 | 52e7c241 | Paolo Bonzini | const char *device; |
716 | 52e7c241 | Paolo Bonzini | const char *format = "qcow2"; |
717 | 52e7c241 | Paolo Bonzini | |
718 | 8802d1fd | Jeff Cody | dev_info = dev_entry->value; |
719 | 8802d1fd | Jeff Cody | dev_entry = dev_entry->next; |
720 | 8802d1fd | Jeff Cody | |
721 | 52e7c241 | Paolo Bonzini | states = g_malloc0(sizeof(BlkTransactionStates));
|
722 | 8802d1fd | Jeff Cody | QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, states, entry); |
723 | 8802d1fd | Jeff Cody | |
724 | 52e7c241 | Paolo Bonzini | switch (dev_info->kind) {
|
725 | 52e7c241 | Paolo Bonzini | case BLOCKDEV_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC:
|
726 | 52e7c241 | Paolo Bonzini | device = dev_info->blockdev_snapshot_sync->device; |
727 | bc8b094f | Paolo Bonzini | if (!dev_info->blockdev_snapshot_sync->has_mode) {
|
728 | bc8b094f | Paolo Bonzini | dev_info->blockdev_snapshot_sync->mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS; |
729 | bc8b094f | Paolo Bonzini | } |
730 | bc8b094f | Paolo Bonzini | new_image_file = dev_info->blockdev_snapshot_sync->snapshot_file; |
731 | 52e7c241 | Paolo Bonzini | if (dev_info->blockdev_snapshot_sync->has_format) {
|
732 | 52e7c241 | Paolo Bonzini | format = dev_info->blockdev_snapshot_sync->format; |
733 | 52e7c241 | Paolo Bonzini | } |
734 | bc8b094f | Paolo Bonzini | mode = dev_info->blockdev_snapshot_sync->mode; |
735 | 52e7c241 | Paolo Bonzini | break;
|
736 | 52e7c241 | Paolo Bonzini | default:
|
737 | 52e7c241 | Paolo Bonzini | abort(); |
738 | 52e7c241 | Paolo Bonzini | } |
739 | 8802d1fd | Jeff Cody | |
740 | 52e7c241 | Paolo Bonzini | drv = bdrv_find_format(format); |
741 | 52e7c241 | Paolo Bonzini | if (!drv) {
|
742 | 52e7c241 | Paolo Bonzini | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
743 | 52e7c241 | Paolo Bonzini | goto delete_and_fail;
|
744 | 52e7c241 | Paolo Bonzini | } |
745 | 52e7c241 | Paolo Bonzini | |
746 | 52e7c241 | Paolo Bonzini | states->old_bs = bdrv_find(device); |
747 | 8802d1fd | Jeff Cody | if (!states->old_bs) {
|
748 | 52e7c241 | Paolo Bonzini | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
749 | 8802d1fd | Jeff Cody | goto delete_and_fail;
|
750 | 8802d1fd | Jeff Cody | } |
751 | 8802d1fd | Jeff Cody | |
752 | e86fe18a | Paolo Bonzini | if (!bdrv_is_inserted(states->old_bs)) {
|
753 | e86fe18a | Paolo Bonzini | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
754 | e86fe18a | Paolo Bonzini | goto delete_and_fail;
|
755 | e86fe18a | Paolo Bonzini | } |
756 | e86fe18a | Paolo Bonzini | |
757 | 8802d1fd | Jeff Cody | if (bdrv_in_use(states->old_bs)) {
|
758 | 52e7c241 | Paolo Bonzini | error_set(errp, QERR_DEVICE_IN_USE, device); |
759 | 8802d1fd | Jeff Cody | goto delete_and_fail;
|
760 | 8802d1fd | Jeff Cody | } |
761 | 8802d1fd | Jeff Cody | |
762 | e86fe18a | Paolo Bonzini | if (!bdrv_is_read_only(states->old_bs)) {
|
763 | 8802d1fd | Jeff Cody | if (bdrv_flush(states->old_bs)) {
|
764 | 8802d1fd | Jeff Cody | error_set(errp, QERR_IO_ERROR); |
765 | 8802d1fd | Jeff Cody | goto delete_and_fail;
|
766 | 8802d1fd | Jeff Cody | } |
767 | 8802d1fd | Jeff Cody | } |
768 | 8802d1fd | Jeff Cody | |
769 | 8802d1fd | Jeff Cody | flags = states->old_bs->open_flags; |
770 | 8802d1fd | Jeff Cody | |
771 | 52e7c241 | Paolo Bonzini | proto_drv = bdrv_find_protocol(new_image_file); |
772 | 8802d1fd | Jeff Cody | if (!proto_drv) {
|
773 | 8802d1fd | Jeff Cody | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
774 | 8802d1fd | Jeff Cody | goto delete_and_fail;
|
775 | 8802d1fd | Jeff Cody | } |
776 | 8802d1fd | Jeff Cody | |
777 | 8802d1fd | Jeff Cody | /* create new image w/backing file */
|
778 | bc8b094f | Paolo Bonzini | if (mode != NEW_IMAGE_MODE_EXISTING) {
|
779 | bc8b094f | Paolo Bonzini | ret = bdrv_img_create(new_image_file, format, |
780 | bc8b094f | Paolo Bonzini | states->old_bs->filename, |
781 | bc8b094f | Paolo Bonzini | states->old_bs->drv->format_name, |
782 | bc8b094f | Paolo Bonzini | NULL, -1, flags); |
783 | bc8b094f | Paolo Bonzini | if (ret) {
|
784 | bc8b094f | Paolo Bonzini | error_set(errp, QERR_OPEN_FILE_FAILED, new_image_file); |
785 | bc8b094f | Paolo Bonzini | goto delete_and_fail;
|
786 | bc8b094f | Paolo Bonzini | } |
787 | 8802d1fd | Jeff Cody | } |
788 | 8802d1fd | Jeff Cody | |
789 | 8802d1fd | Jeff Cody | /* We will manually add the backing_hd field to the bs later */
|
790 | 8802d1fd | Jeff Cody | states->new_bs = bdrv_new("");
|
791 | 52e7c241 | Paolo Bonzini | ret = bdrv_open(states->new_bs, new_image_file, |
792 | 8802d1fd | Jeff Cody | flags | BDRV_O_NO_BACKING, drv); |
793 | 8802d1fd | Jeff Cody | if (ret != 0) { |
794 | 52e7c241 | Paolo Bonzini | error_set(errp, QERR_OPEN_FILE_FAILED, new_image_file); |
795 | 8802d1fd | Jeff Cody | goto delete_and_fail;
|
796 | 8802d1fd | Jeff Cody | } |
797 | 8802d1fd | Jeff Cody | } |
798 | 8802d1fd | Jeff Cody | |
799 | 8802d1fd | Jeff Cody | |
800 | 8802d1fd | Jeff Cody | /* Now we are going to do the actual pivot. Everything up to this point
|
801 | 8802d1fd | Jeff Cody | * is reversible, but we are committed at this point */
|
802 | 8802d1fd | Jeff Cody | QSIMPLEQ_FOREACH(states, &snap_bdrv_states, entry) { |
803 | 8802d1fd | Jeff Cody | /* This removes our old bs from the bdrv_states, and adds the new bs */
|
804 | 8802d1fd | Jeff Cody | bdrv_append(states->new_bs, states->old_bs); |
805 | 8802d1fd | Jeff Cody | } |
806 | 8802d1fd | Jeff Cody | |
807 | 8802d1fd | Jeff Cody | /* success */
|
808 | 8802d1fd | Jeff Cody | goto exit;
|
809 | 8802d1fd | Jeff Cody | |
810 | 8802d1fd | Jeff Cody | delete_and_fail:
|
811 | 8802d1fd | Jeff Cody | /*
|
812 | 8802d1fd | Jeff Cody | * failure, and it is all-or-none; abandon each new bs, and keep using
|
813 | 8802d1fd | Jeff Cody | * the original bs for all images
|
814 | 8802d1fd | Jeff Cody | */
|
815 | 8802d1fd | Jeff Cody | QSIMPLEQ_FOREACH(states, &snap_bdrv_states, entry) { |
816 | 8802d1fd | Jeff Cody | if (states->new_bs) {
|
817 | 8802d1fd | Jeff Cody | bdrv_delete(states->new_bs); |
818 | 8802d1fd | Jeff Cody | } |
819 | 8802d1fd | Jeff Cody | } |
820 | 8802d1fd | Jeff Cody | exit:
|
821 | 622d2419 | Paolo Bonzini | QSIMPLEQ_FOREACH_SAFE(states, &snap_bdrv_states, entry, next) { |
822 | 8802d1fd | Jeff Cody | g_free(states); |
823 | 8802d1fd | Jeff Cody | } |
824 | 8802d1fd | Jeff Cody | return;
|
825 | 8802d1fd | Jeff Cody | } |
826 | 8802d1fd | Jeff Cody | |
827 | 8802d1fd | Jeff Cody | |
828 | 92d48558 | Luiz Capitulino | static void eject_device(BlockDriverState *bs, int force, Error **errp) |
829 | 666daa68 | Markus Armbruster | { |
830 | 2d3735d3 | Stefan Hajnoczi | if (bdrv_in_use(bs)) {
|
831 | 2d3735d3 | Stefan Hajnoczi | error_set(errp, QERR_DEVICE_IN_USE, bdrv_get_device_name(bs)); |
832 | 2d3735d3 | Stefan Hajnoczi | return;
|
833 | 2d3735d3 | Stefan Hajnoczi | } |
834 | 2c6942fa | Markus Armbruster | if (!bdrv_dev_has_removable_media(bs)) {
|
835 | 92d48558 | Luiz Capitulino | error_set(errp, QERR_DEVICE_NOT_REMOVABLE, bdrv_get_device_name(bs)); |
836 | 92d48558 | Luiz Capitulino | return;
|
837 | ea8f942f | Markus Armbruster | } |
838 | 92d48558 | Luiz Capitulino | |
839 | 025ccaa7 | Paolo Bonzini | if (bdrv_dev_is_medium_locked(bs) && !bdrv_dev_is_tray_open(bs)) {
|
840 | 025ccaa7 | Paolo Bonzini | bdrv_dev_eject_request(bs, force); |
841 | 025ccaa7 | Paolo Bonzini | if (!force) {
|
842 | 92d48558 | Luiz Capitulino | error_set(errp, QERR_DEVICE_LOCKED, bdrv_get_device_name(bs)); |
843 | 92d48558 | Luiz Capitulino | return;
|
844 | 025ccaa7 | Paolo Bonzini | } |
845 | 666daa68 | Markus Armbruster | } |
846 | 92d48558 | Luiz Capitulino | |
847 | 3b5276b5 | Eduardo Habkost | bdrv_close(bs); |
848 | 666daa68 | Markus Armbruster | } |
849 | 666daa68 | Markus Armbruster | |
850 | c245b6a3 | Luiz Capitulino | void qmp_eject(const char *device, bool has_force, bool force, Error **errp) |
851 | 666daa68 | Markus Armbruster | { |
852 | 666daa68 | Markus Armbruster | BlockDriverState *bs; |
853 | 666daa68 | Markus Armbruster | |
854 | c245b6a3 | Luiz Capitulino | bs = bdrv_find(device); |
855 | 666daa68 | Markus Armbruster | if (!bs) {
|
856 | c245b6a3 | Luiz Capitulino | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
857 | c245b6a3 | Luiz Capitulino | return;
|
858 | 92d48558 | Luiz Capitulino | } |
859 | 92d48558 | Luiz Capitulino | |
860 | c245b6a3 | Luiz Capitulino | eject_device(bs, force, errp); |
861 | 666daa68 | Markus Armbruster | } |
862 | 666daa68 | Markus Armbruster | |
863 | a4dea8a9 | Luiz Capitulino | void qmp_block_passwd(const char *device, const char *password, Error **errp) |
864 | 666daa68 | Markus Armbruster | { |
865 | 666daa68 | Markus Armbruster | BlockDriverState *bs; |
866 | 666daa68 | Markus Armbruster | int err;
|
867 | 666daa68 | Markus Armbruster | |
868 | a4dea8a9 | Luiz Capitulino | bs = bdrv_find(device); |
869 | 666daa68 | Markus Armbruster | if (!bs) {
|
870 | a4dea8a9 | Luiz Capitulino | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
871 | a4dea8a9 | Luiz Capitulino | return;
|
872 | 666daa68 | Markus Armbruster | } |
873 | 666daa68 | Markus Armbruster | |
874 | a4dea8a9 | Luiz Capitulino | err = bdrv_set_key(bs, password); |
875 | 666daa68 | Markus Armbruster | if (err == -EINVAL) {
|
876 | a4dea8a9 | Luiz Capitulino | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); |
877 | a4dea8a9 | Luiz Capitulino | return;
|
878 | 666daa68 | Markus Armbruster | } else if (err < 0) { |
879 | a4dea8a9 | Luiz Capitulino | error_set(errp, QERR_INVALID_PASSWORD); |
880 | a4dea8a9 | Luiz Capitulino | return;
|
881 | 666daa68 | Markus Armbruster | } |
882 | 666daa68 | Markus Armbruster | } |
883 | 666daa68 | Markus Armbruster | |
884 | 333a96ec | Luiz Capitulino | static void qmp_bdrv_open_encrypted(BlockDriverState *bs, const char *filename, |
885 | 333a96ec | Luiz Capitulino | int bdrv_flags, BlockDriver *drv,
|
886 | 333a96ec | Luiz Capitulino | const char *password, Error **errp) |
887 | 333a96ec | Luiz Capitulino | { |
888 | 333a96ec | Luiz Capitulino | if (bdrv_open(bs, filename, bdrv_flags, drv) < 0) { |
889 | 333a96ec | Luiz Capitulino | error_set(errp, QERR_OPEN_FILE_FAILED, filename); |
890 | 333a96ec | Luiz Capitulino | return;
|
891 | 333a96ec | Luiz Capitulino | } |
892 | 333a96ec | Luiz Capitulino | |
893 | 333a96ec | Luiz Capitulino | if (bdrv_key_required(bs)) {
|
894 | 333a96ec | Luiz Capitulino | if (password) {
|
895 | 333a96ec | Luiz Capitulino | if (bdrv_set_key(bs, password) < 0) { |
896 | 333a96ec | Luiz Capitulino | error_set(errp, QERR_INVALID_PASSWORD); |
897 | 333a96ec | Luiz Capitulino | } |
898 | 333a96ec | Luiz Capitulino | } else {
|
899 | 333a96ec | Luiz Capitulino | error_set(errp, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs), |
900 | 333a96ec | Luiz Capitulino | bdrv_get_encrypted_filename(bs)); |
901 | 333a96ec | Luiz Capitulino | } |
902 | 333a96ec | Luiz Capitulino | } else if (password) { |
903 | 333a96ec | Luiz Capitulino | error_set(errp, QERR_DEVICE_NOT_ENCRYPTED, bdrv_get_device_name(bs)); |
904 | 333a96ec | Luiz Capitulino | } |
905 | 333a96ec | Luiz Capitulino | } |
906 | 333a96ec | Luiz Capitulino | |
907 | 333a96ec | Luiz Capitulino | void qmp_change_blockdev(const char *device, const char *filename, |
908 | 333a96ec | Luiz Capitulino | bool has_format, const char *format, Error **errp) |
909 | 666daa68 | Markus Armbruster | { |
910 | 666daa68 | Markus Armbruster | BlockDriverState *bs; |
911 | 666daa68 | Markus Armbruster | BlockDriver *drv = NULL;
|
912 | 666daa68 | Markus Armbruster | int bdrv_flags;
|
913 | 92d48558 | Luiz Capitulino | Error *err = NULL;
|
914 | 666daa68 | Markus Armbruster | |
915 | 666daa68 | Markus Armbruster | bs = bdrv_find(device); |
916 | 666daa68 | Markus Armbruster | if (!bs) {
|
917 | 333a96ec | Luiz Capitulino | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
918 | 333a96ec | Luiz Capitulino | return;
|
919 | 666daa68 | Markus Armbruster | } |
920 | 333a96ec | Luiz Capitulino | |
921 | 333a96ec | Luiz Capitulino | if (format) {
|
922 | 333a96ec | Luiz Capitulino | drv = bdrv_find_whitelisted_format(format); |
923 | 666daa68 | Markus Armbruster | if (!drv) {
|
924 | 333a96ec | Luiz Capitulino | error_set(errp, QERR_INVALID_BLOCK_FORMAT, format); |
925 | 333a96ec | Luiz Capitulino | return;
|
926 | 666daa68 | Markus Armbruster | } |
927 | 666daa68 | Markus Armbruster | } |
928 | 333a96ec | Luiz Capitulino | |
929 | 92d48558 | Luiz Capitulino | eject_device(bs, 0, &err);
|
930 | 92d48558 | Luiz Capitulino | if (error_is_set(&err)) {
|
931 | 333a96ec | Luiz Capitulino | error_propagate(errp, err); |
932 | 333a96ec | Luiz Capitulino | return;
|
933 | 666daa68 | Markus Armbruster | } |
934 | 333a96ec | Luiz Capitulino | |
935 | 528f7663 | Markus Armbruster | bdrv_flags = bdrv_is_read_only(bs) ? 0 : BDRV_O_RDWR;
|
936 | 199630b6 | Blue Swirl | bdrv_flags |= bdrv_is_snapshot(bs) ? BDRV_O_SNAPSHOT : 0;
|
937 | 333a96ec | Luiz Capitulino | |
938 | 333a96ec | Luiz Capitulino | qmp_bdrv_open_encrypted(bs, filename, bdrv_flags, drv, NULL, errp);
|
939 | 666daa68 | Markus Armbruster | } |
940 | 9063f814 | Ryan Harper | |
941 | 727f005e | Zhi Yong Wu | /* throttling disk I/O limits */
|
942 | 80047da5 | Luiz Capitulino | void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd, |
943 | 80047da5 | Luiz Capitulino | int64_t bps_wr, int64_t iops, int64_t iops_rd, |
944 | 80047da5 | Luiz Capitulino | int64_t iops_wr, Error **errp) |
945 | 727f005e | Zhi Yong Wu | { |
946 | 727f005e | Zhi Yong Wu | BlockIOLimit io_limits; |
947 | 727f005e | Zhi Yong Wu | BlockDriverState *bs; |
948 | 727f005e | Zhi Yong Wu | |
949 | 80047da5 | Luiz Capitulino | bs = bdrv_find(device); |
950 | 727f005e | Zhi Yong Wu | if (!bs) {
|
951 | 80047da5 | Luiz Capitulino | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
952 | 80047da5 | Luiz Capitulino | return;
|
953 | 727f005e | Zhi Yong Wu | } |
954 | 727f005e | Zhi Yong Wu | |
955 | 80047da5 | Luiz Capitulino | io_limits.bps[BLOCK_IO_LIMIT_TOTAL] = bps; |
956 | 80047da5 | Luiz Capitulino | io_limits.bps[BLOCK_IO_LIMIT_READ] = bps_rd; |
957 | 80047da5 | Luiz Capitulino | io_limits.bps[BLOCK_IO_LIMIT_WRITE] = bps_wr; |
958 | 80047da5 | Luiz Capitulino | io_limits.iops[BLOCK_IO_LIMIT_TOTAL]= iops; |
959 | 80047da5 | Luiz Capitulino | io_limits.iops[BLOCK_IO_LIMIT_READ] = iops_rd; |
960 | 80047da5 | Luiz Capitulino | io_limits.iops[BLOCK_IO_LIMIT_WRITE]= iops_wr; |
961 | 727f005e | Zhi Yong Wu | |
962 | 727f005e | Zhi Yong Wu | if (!do_check_io_limits(&io_limits)) {
|
963 | 80047da5 | Luiz Capitulino | error_set(errp, QERR_INVALID_PARAMETER_COMBINATION); |
964 | 80047da5 | Luiz Capitulino | return;
|
965 | 727f005e | Zhi Yong Wu | } |
966 | 727f005e | Zhi Yong Wu | |
967 | 727f005e | Zhi Yong Wu | bs->io_limits = io_limits; |
968 | 727f005e | Zhi Yong Wu | bs->slice_time = BLOCK_IO_SLICE_TIME; |
969 | 727f005e | Zhi Yong Wu | |
970 | 727f005e | Zhi Yong Wu | if (!bs->io_limits_enabled && bdrv_io_limits_enabled(bs)) {
|
971 | 727f005e | Zhi Yong Wu | bdrv_io_limits_enable(bs); |
972 | 727f005e | Zhi Yong Wu | } else if (bs->io_limits_enabled && !bdrv_io_limits_enabled(bs)) { |
973 | 727f005e | Zhi Yong Wu | bdrv_io_limits_disable(bs); |
974 | 727f005e | Zhi Yong Wu | } else {
|
975 | 727f005e | Zhi Yong Wu | if (bs->block_timer) {
|
976 | 727f005e | Zhi Yong Wu | qemu_mod_timer(bs->block_timer, qemu_get_clock_ns(vm_clock)); |
977 | 727f005e | Zhi Yong Wu | } |
978 | 727f005e | Zhi Yong Wu | } |
979 | 727f005e | Zhi Yong Wu | } |
980 | 727f005e | Zhi Yong Wu | |
981 | 9063f814 | Ryan Harper | int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data) |
982 | 9063f814 | Ryan Harper | { |
983 | 9063f814 | Ryan Harper | const char *id = qdict_get_str(qdict, "id"); |
984 | 9063f814 | Ryan Harper | BlockDriverState *bs; |
985 | 9063f814 | Ryan Harper | |
986 | 9063f814 | Ryan Harper | bs = bdrv_find(id); |
987 | 9063f814 | Ryan Harper | if (!bs) {
|
988 | 9063f814 | Ryan Harper | qerror_report(QERR_DEVICE_NOT_FOUND, id); |
989 | 9063f814 | Ryan Harper | return -1; |
990 | 9063f814 | Ryan Harper | } |
991 | 8591675f | Marcelo Tosatti | if (bdrv_in_use(bs)) {
|
992 | 8591675f | Marcelo Tosatti | qerror_report(QERR_DEVICE_IN_USE, id); |
993 | 8591675f | Marcelo Tosatti | return -1; |
994 | 8591675f | Marcelo Tosatti | } |
995 | 9063f814 | Ryan Harper | |
996 | 9063f814 | Ryan Harper | /* quiesce block driver; prevent further io */
|
997 | 922453bc | Stefan Hajnoczi | bdrv_drain_all(); |
998 | 9063f814 | Ryan Harper | bdrv_flush(bs); |
999 | 9063f814 | Ryan Harper | bdrv_close(bs); |
1000 | 9063f814 | Ryan Harper | |
1001 | fa879d62 | Markus Armbruster | /* if we have a device attached to this BlockDriverState
|
1002 | d22b2f41 | Ryan Harper | * then we need to make the drive anonymous until the device
|
1003 | d22b2f41 | Ryan Harper | * can be removed. If this is a drive with no device backing
|
1004 | d22b2f41 | Ryan Harper | * then we can just get rid of the block driver state right here.
|
1005 | d22b2f41 | Ryan Harper | */
|
1006 | fa879d62 | Markus Armbruster | if (bdrv_get_attached_dev(bs)) {
|
1007 | d22b2f41 | Ryan Harper | bdrv_make_anon(bs); |
1008 | d22b2f41 | Ryan Harper | } else {
|
1009 | d22b2f41 | Ryan Harper | drive_uninit(drive_get_by_blockdev(bs)); |
1010 | 9063f814 | Ryan Harper | } |
1011 | 9063f814 | Ryan Harper | |
1012 | 9063f814 | Ryan Harper | return 0; |
1013 | 9063f814 | Ryan Harper | } |
1014 | 6d4a2b3a | Christoph Hellwig | |
1015 | 5e7caacb | Luiz Capitulino | void qmp_block_resize(const char *device, int64_t size, Error **errp) |
1016 | 6d4a2b3a | Christoph Hellwig | { |
1017 | 6d4a2b3a | Christoph Hellwig | BlockDriverState *bs; |
1018 | 6d4a2b3a | Christoph Hellwig | |
1019 | 6d4a2b3a | Christoph Hellwig | bs = bdrv_find(device); |
1020 | 6d4a2b3a | Christoph Hellwig | if (!bs) {
|
1021 | 5e7caacb | Luiz Capitulino | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1022 | 5e7caacb | Luiz Capitulino | return;
|
1023 | 6d4a2b3a | Christoph Hellwig | } |
1024 | 6d4a2b3a | Christoph Hellwig | |
1025 | 6d4a2b3a | Christoph Hellwig | if (size < 0) { |
1026 | 939a1cc3 | Stefan Hajnoczi | error_set(errp, QERR_INVALID_PARAMETER_VALUE, "size", "a >0 size"); |
1027 | 5e7caacb | Luiz Capitulino | return;
|
1028 | 6d4a2b3a | Christoph Hellwig | } |
1029 | 6d4a2b3a | Christoph Hellwig | |
1030 | 939a1cc3 | Stefan Hajnoczi | switch (bdrv_truncate(bs, size)) {
|
1031 | 939a1cc3 | Stefan Hajnoczi | case 0: |
1032 | 939a1cc3 | Stefan Hajnoczi | break;
|
1033 | 939a1cc3 | Stefan Hajnoczi | case -ENOMEDIUM:
|
1034 | 939a1cc3 | Stefan Hajnoczi | error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device); |
1035 | 939a1cc3 | Stefan Hajnoczi | break;
|
1036 | 939a1cc3 | Stefan Hajnoczi | case -ENOTSUP:
|
1037 | 939a1cc3 | Stefan Hajnoczi | error_set(errp, QERR_UNSUPPORTED); |
1038 | 939a1cc3 | Stefan Hajnoczi | break;
|
1039 | 939a1cc3 | Stefan Hajnoczi | case -EACCES:
|
1040 | 939a1cc3 | Stefan Hajnoczi | error_set(errp, QERR_DEVICE_IS_READ_ONLY, device); |
1041 | 939a1cc3 | Stefan Hajnoczi | break;
|
1042 | 939a1cc3 | Stefan Hajnoczi | case -EBUSY:
|
1043 | 939a1cc3 | Stefan Hajnoczi | error_set(errp, QERR_DEVICE_IN_USE, device); |
1044 | 939a1cc3 | Stefan Hajnoczi | break;
|
1045 | 939a1cc3 | Stefan Hajnoczi | default:
|
1046 | 5e7caacb | Luiz Capitulino | error_set(errp, QERR_UNDEFINED_ERROR); |
1047 | 939a1cc3 | Stefan Hajnoczi | break;
|
1048 | 6d4a2b3a | Christoph Hellwig | } |
1049 | 6d4a2b3a | Christoph Hellwig | } |
1050 | 12bd451f | Stefan Hajnoczi | |
1051 | 12bd451f | Stefan Hajnoczi | static QObject *qobject_from_block_job(BlockJob *job)
|
1052 | 12bd451f | Stefan Hajnoczi | { |
1053 | 12bd451f | Stefan Hajnoczi | return qobject_from_jsonf("{ 'type': %s," |
1054 | 12bd451f | Stefan Hajnoczi | "'device': %s,"
|
1055 | 12bd451f | Stefan Hajnoczi | "'len': %" PRId64 "," |
1056 | 12bd451f | Stefan Hajnoczi | "'offset': %" PRId64 "," |
1057 | 12bd451f | Stefan Hajnoczi | "'speed': %" PRId64 " }", |
1058 | 12bd451f | Stefan Hajnoczi | job->job_type->job_type, |
1059 | 12bd451f | Stefan Hajnoczi | bdrv_get_device_name(job->bs), |
1060 | 12bd451f | Stefan Hajnoczi | job->len, |
1061 | 12bd451f | Stefan Hajnoczi | job->offset, |
1062 | 12bd451f | Stefan Hajnoczi | job->speed); |
1063 | 12bd451f | Stefan Hajnoczi | } |
1064 | 12bd451f | Stefan Hajnoczi | |
1065 | 12bd451f | Stefan Hajnoczi | static void block_stream_cb(void *opaque, int ret) |
1066 | 12bd451f | Stefan Hajnoczi | { |
1067 | 12bd451f | Stefan Hajnoczi | BlockDriverState *bs = opaque; |
1068 | 12bd451f | Stefan Hajnoczi | QObject *obj; |
1069 | 12bd451f | Stefan Hajnoczi | |
1070 | 12bd451f | Stefan Hajnoczi | trace_block_stream_cb(bs, bs->job, ret); |
1071 | 12bd451f | Stefan Hajnoczi | |
1072 | 12bd451f | Stefan Hajnoczi | assert(bs->job); |
1073 | 12bd451f | Stefan Hajnoczi | obj = qobject_from_block_job(bs->job); |
1074 | 12bd451f | Stefan Hajnoczi | if (ret < 0) { |
1075 | 12bd451f | Stefan Hajnoczi | QDict *dict = qobject_to_qdict(obj); |
1076 | 12bd451f | Stefan Hajnoczi | qdict_put(dict, "error", qstring_from_str(strerror(-ret)));
|
1077 | 12bd451f | Stefan Hajnoczi | } |
1078 | 12bd451f | Stefan Hajnoczi | |
1079 | 370521a1 | Stefan Hajnoczi | if (block_job_is_cancelled(bs->job)) {
|
1080 | 370521a1 | Stefan Hajnoczi | monitor_protocol_event(QEVENT_BLOCK_JOB_CANCELLED, obj); |
1081 | 370521a1 | Stefan Hajnoczi | } else {
|
1082 | 370521a1 | Stefan Hajnoczi | monitor_protocol_event(QEVENT_BLOCK_JOB_COMPLETED, obj); |
1083 | 370521a1 | Stefan Hajnoczi | } |
1084 | 12bd451f | Stefan Hajnoczi | qobject_decref(obj); |
1085 | aa398a5c | Stefan Hajnoczi | |
1086 | aa398a5c | Stefan Hajnoczi | drive_put_ref_bh_schedule(drive_get_by_blockdev(bs)); |
1087 | 12bd451f | Stefan Hajnoczi | } |
1088 | 12bd451f | Stefan Hajnoczi | |
1089 | 12bd451f | Stefan Hajnoczi | void qmp_block_stream(const char *device, bool has_base, |
1090 | c83c66c3 | Stefan Hajnoczi | const char *base, bool has_speed, |
1091 | c83c66c3 | Stefan Hajnoczi | int64_t speed, Error **errp) |
1092 | 12bd451f | Stefan Hajnoczi | { |
1093 | 12bd451f | Stefan Hajnoczi | BlockDriverState *bs; |
1094 | c8c3080f | Marcelo Tosatti | BlockDriverState *base_bs = NULL;
|
1095 | fd7f8c65 | Stefan Hajnoczi | Error *local_err = NULL;
|
1096 | 12bd451f | Stefan Hajnoczi | |
1097 | 12bd451f | Stefan Hajnoczi | bs = bdrv_find(device); |
1098 | 12bd451f | Stefan Hajnoczi | if (!bs) {
|
1099 | 12bd451f | Stefan Hajnoczi | error_set(errp, QERR_DEVICE_NOT_FOUND, device); |
1100 | 12bd451f | Stefan Hajnoczi | return;
|
1101 | 12bd451f | Stefan Hajnoczi | } |
1102 | 12bd451f | Stefan Hajnoczi | |
1103 | 12bd451f | Stefan Hajnoczi | if (base) {
|
1104 | c8c3080f | Marcelo Tosatti | base_bs = bdrv_find_backing_image(bs, base); |
1105 | c8c3080f | Marcelo Tosatti | if (base_bs == NULL) { |
1106 | c8c3080f | Marcelo Tosatti | error_set(errp, QERR_BASE_NOT_FOUND, base); |
1107 | c8c3080f | Marcelo Tosatti | return;
|
1108 | c8c3080f | Marcelo Tosatti | } |
1109 | 12bd451f | Stefan Hajnoczi | } |
1110 | 12bd451f | Stefan Hajnoczi | |
1111 | c83c66c3 | Stefan Hajnoczi | stream_start(bs, base_bs, base, has_speed ? speed : 0,
|
1112 | c83c66c3 | Stefan Hajnoczi | block_stream_cb, bs, &local_err); |
1113 | fd7f8c65 | Stefan Hajnoczi | if (error_is_set(&local_err)) {
|
1114 | fd7f8c65 | Stefan Hajnoczi | error_propagate(errp, local_err); |
1115 | fd7f8c65 | Stefan Hajnoczi | return;
|
1116 | 12bd451f | Stefan Hajnoczi | } |
1117 | 12bd451f | Stefan Hajnoczi | |
1118 | aa398a5c | Stefan Hajnoczi | /* Grab a reference so hotplug does not delete the BlockDriverState from
|
1119 | aa398a5c | Stefan Hajnoczi | * underneath us.
|
1120 | aa398a5c | Stefan Hajnoczi | */
|
1121 | aa398a5c | Stefan Hajnoczi | drive_get_ref(drive_get_by_blockdev(bs)); |
1122 | aa398a5c | Stefan Hajnoczi | |
1123 | 12bd451f | Stefan Hajnoczi | trace_qmp_block_stream(bs, bs->job); |
1124 | 12bd451f | Stefan Hajnoczi | } |
1125 | 2d47c6e9 | Stefan Hajnoczi | |
1126 | 2d47c6e9 | Stefan Hajnoczi | static BlockJob *find_block_job(const char *device) |
1127 | 2d47c6e9 | Stefan Hajnoczi | { |
1128 | 2d47c6e9 | Stefan Hajnoczi | BlockDriverState *bs; |
1129 | 2d47c6e9 | Stefan Hajnoczi | |
1130 | 2d47c6e9 | Stefan Hajnoczi | bs = bdrv_find(device); |
1131 | 2d47c6e9 | Stefan Hajnoczi | if (!bs || !bs->job) {
|
1132 | 2d47c6e9 | Stefan Hajnoczi | return NULL; |
1133 | 2d47c6e9 | Stefan Hajnoczi | } |
1134 | 2d47c6e9 | Stefan Hajnoczi | return bs->job;
|
1135 | 2d47c6e9 | Stefan Hajnoczi | } |
1136 | 2d47c6e9 | Stefan Hajnoczi | |
1137 | 882ec7ce | Stefan Hajnoczi | void qmp_block_job_set_speed(const char *device, int64_t speed, Error **errp) |
1138 | 2d47c6e9 | Stefan Hajnoczi | { |
1139 | 2d47c6e9 | Stefan Hajnoczi | BlockJob *job = find_block_job(device); |
1140 | 2d47c6e9 | Stefan Hajnoczi | |
1141 | 2d47c6e9 | Stefan Hajnoczi | if (!job) {
|
1142 | 2d47c6e9 | Stefan Hajnoczi | error_set(errp, QERR_DEVICE_NOT_ACTIVE, device); |
1143 | 2d47c6e9 | Stefan Hajnoczi | return;
|
1144 | 2d47c6e9 | Stefan Hajnoczi | } |
1145 | 2d47c6e9 | Stefan Hajnoczi | |
1146 | 882ec7ce | Stefan Hajnoczi | block_job_set_speed(job, speed, errp); |
1147 | 2d47c6e9 | Stefan Hajnoczi | } |
1148 | 370521a1 | Stefan Hajnoczi | |
1149 | 370521a1 | Stefan Hajnoczi | void qmp_block_job_cancel(const char *device, Error **errp) |
1150 | 370521a1 | Stefan Hajnoczi | { |
1151 | 370521a1 | Stefan Hajnoczi | BlockJob *job = find_block_job(device); |
1152 | 370521a1 | Stefan Hajnoczi | |
1153 | 370521a1 | Stefan Hajnoczi | if (!job) {
|
1154 | 370521a1 | Stefan Hajnoczi | error_set(errp, QERR_DEVICE_NOT_ACTIVE, device); |
1155 | 370521a1 | Stefan Hajnoczi | return;
|
1156 | 370521a1 | Stefan Hajnoczi | } |
1157 | 370521a1 | Stefan Hajnoczi | |
1158 | 370521a1 | Stefan Hajnoczi | trace_qmp_block_job_cancel(job); |
1159 | 370521a1 | Stefan Hajnoczi | block_job_cancel(job); |
1160 | 370521a1 | Stefan Hajnoczi | } |
1161 | fb5458cd | Stefan Hajnoczi | |
1162 | fb5458cd | Stefan Hajnoczi | static void do_qmp_query_block_jobs_one(void *opaque, BlockDriverState *bs) |
1163 | fb5458cd | Stefan Hajnoczi | { |
1164 | fb5458cd | Stefan Hajnoczi | BlockJobInfoList **prev = opaque; |
1165 | fb5458cd | Stefan Hajnoczi | BlockJob *job = bs->job; |
1166 | fb5458cd | Stefan Hajnoczi | |
1167 | fb5458cd | Stefan Hajnoczi | if (job) {
|
1168 | fb5458cd | Stefan Hajnoczi | BlockJobInfoList *elem; |
1169 | fb5458cd | Stefan Hajnoczi | BlockJobInfo *info = g_new(BlockJobInfo, 1);
|
1170 | fb5458cd | Stefan Hajnoczi | *info = (BlockJobInfo){ |
1171 | fb5458cd | Stefan Hajnoczi | .type = g_strdup(job->job_type->job_type), |
1172 | fb5458cd | Stefan Hajnoczi | .device = g_strdup(bdrv_get_device_name(bs)), |
1173 | fb5458cd | Stefan Hajnoczi | .len = job->len, |
1174 | fb5458cd | Stefan Hajnoczi | .offset = job->offset, |
1175 | fb5458cd | Stefan Hajnoczi | .speed = job->speed, |
1176 | fb5458cd | Stefan Hajnoczi | }; |
1177 | fb5458cd | Stefan Hajnoczi | |
1178 | fb5458cd | Stefan Hajnoczi | elem = g_new0(BlockJobInfoList, 1);
|
1179 | fb5458cd | Stefan Hajnoczi | elem->value = info; |
1180 | fb5458cd | Stefan Hajnoczi | |
1181 | fb5458cd | Stefan Hajnoczi | (*prev)->next = elem; |
1182 | fb5458cd | Stefan Hajnoczi | *prev = elem; |
1183 | fb5458cd | Stefan Hajnoczi | } |
1184 | fb5458cd | Stefan Hajnoczi | } |
1185 | fb5458cd | Stefan Hajnoczi | |
1186 | fb5458cd | Stefan Hajnoczi | BlockJobInfoList *qmp_query_block_jobs(Error **errp) |
1187 | fb5458cd | Stefan Hajnoczi | { |
1188 | fb5458cd | Stefan Hajnoczi | /* Dummy is a fake list element for holding the head pointer */
|
1189 | fb5458cd | Stefan Hajnoczi | BlockJobInfoList dummy = {}; |
1190 | fb5458cd | Stefan Hajnoczi | BlockJobInfoList *prev = &dummy; |
1191 | fb5458cd | Stefan Hajnoczi | bdrv_iterate(do_qmp_query_block_jobs_one, &prev); |
1192 | fb5458cd | Stefan Hajnoczi | return dummy.next;
|
1193 | fb5458cd | Stefan Hajnoczi | } |