Revision ae26a287
| b/lib/bdev.py | ||
|---|---|---|
| 1017 | 1017 |
self.minor = minor |
| 1018 | 1018 |
self.dev_path = self._DevPath(minor) |
| 1019 | 1019 |
|
| 1020 |
@staticmethod |
|
| 1021 |
def _CheckMetaSize(meta_device): |
|
| 1022 |
"""Check if the given meta device looks like a valid one. |
|
| 1023 |
|
|
| 1024 |
This currently only check the size, which must be around |
|
| 1025 |
128MiB. |
|
| 1026 |
|
|
| 1027 |
""" |
|
| 1028 |
result = utils.RunCmd(["blockdev", "--getsize", meta_device]) |
|
| 1029 |
if result.failed: |
|
| 1030 |
logger.Error("Failed to get device size: %s" % result.fail_reason)
|
|
| 1031 |
return False |
|
| 1032 |
try: |
|
| 1033 |
sectors = int(result.stdout) |
|
| 1034 |
except ValueError: |
|
| 1035 |
logger.Error("Invalid output from blockdev: '%s'" % result.stdout)
|
|
| 1036 |
return False |
|
| 1037 |
bytes = sectors * 512 |
|
| 1038 |
if bytes < 128 * 1024 * 1024: # less than 128MiB |
|
| 1039 |
logger.Error("Meta device too small (%.2fMib)" % (bytes / 1024 / 1024))
|
|
| 1040 |
return False |
|
| 1041 |
if bytes > (128 + 32) * 1024 * 1024: # account for an extra (big) PE on LVM |
|
| 1042 |
logger.Error("Meta device too big (%.2fMiB)" % (bytes / 1024 / 1024))
|
|
| 1043 |
return False |
|
| 1044 |
return True |
|
| 1045 |
|
|
| 1020 | 1046 |
|
| 1021 | 1047 |
class DRBDev(BaseDRBD): |
| 1022 | 1048 |
"""DRBD block device. |
| ... | ... | |
| 1168 | 1194 |
return retval |
| 1169 | 1195 |
|
| 1170 | 1196 |
|
| 1171 |
@staticmethod |
|
| 1172 |
def _IsValidMeta(meta_device): |
|
| 1173 |
"""Check if the given meta device looks like a valid one. |
|
| 1174 |
|
|
| 1175 |
This currently only check the size, which must be around |
|
| 1176 |
128MiB. |
|
| 1177 |
|
|
| 1178 |
""" |
|
| 1179 |
result = utils.RunCmd(["blockdev", "--getsize", meta_device]) |
|
| 1180 |
if result.failed: |
|
| 1181 |
logger.Error("Failed to get device size: %s" % result.fail_reason)
|
|
| 1182 |
return False |
|
| 1183 |
try: |
|
| 1184 |
sectors = int(result.stdout) |
|
| 1185 |
except ValueError: |
|
| 1186 |
logger.Error("Invalid output from blockdev: '%s'" % result.stdout)
|
|
| 1187 |
return False |
|
| 1188 |
bytes = sectors * 512 |
|
| 1189 |
if bytes < 128*1024*1024: # less than 128MiB |
|
| 1190 |
logger.Error("Meta device too small (%.2fMib)" % (bytes/1024/1024))
|
|
| 1191 |
return False |
|
| 1192 |
if bytes > (128+32)*1024*1024: # account for an extra (big) PE on LVM |
|
| 1193 |
logger.Error("Meta device too big (%.2fMiB)" % (bytes/1024/1024))
|
|
| 1194 |
return False |
|
| 1195 |
return True |
|
| 1196 |
|
|
| 1197 |
|
|
| 1198 | 1197 |
@classmethod |
| 1199 | 1198 |
def _AssembleLocal(cls, minor, backend, meta): |
| 1200 | 1199 |
"""Configure the local part of a DRBD device. |
| ... | ... | |
| 1203 | 1202 |
device. And it must be done only once. |
| 1204 | 1203 |
|
| 1205 | 1204 |
""" |
| 1206 |
if not cls._IsValidMeta(meta):
|
|
| 1205 |
if not cls._CheckMetaSize(meta):
|
|
| 1207 | 1206 |
return False |
| 1208 | 1207 |
result = utils.RunCmd(["drbdsetup", cls._DevPath(minor), "disk", |
| 1209 | 1208 |
backend, meta, "0", "-e", "detach"]) |
| ... | ... | |
| 1536 | 1535 |
meta.Assemble() |
| 1537 | 1536 |
if not meta.Attach(): |
| 1538 | 1537 |
raise errors.BlockDeviceError("Can't attach to meta device")
|
| 1539 |
if not cls._IsValidMeta(meta.dev_path):
|
|
| 1538 |
if not cls._CheckMetaSize(meta.dev_path):
|
|
| 1540 | 1539 |
raise errors.BlockDeviceError("Invalid meta device")
|
| 1541 | 1540 |
logger.Info("Started zeroing device %s" % meta.dev_path)
|
| 1542 | 1541 |
cls._ZeroDevice(meta.dev_path) |
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