def addtag(vg, lv, tag):
lvname = "%s/%s" % (vg, lv)
cmd = ("lvchange", ) + LVM_NOBACKUP + ("--addtag", tag) + (lvname, )
rc, out, err = _lvminfo.cmd(cmd, _lvminfo._getVGDevs((vg, )))
_lvminfo._invalidatelvs(vg, lv)
if rc != 0:
# Fix me: should be se.ChangeLogicalVolumeError but this not exists.
raise se.MissingTagOnLogicalVolume("%s/%s" % (vg, lv), tag)
def _getVolumeTag(sdUUID, volUUID, tagPrefix):
tags = lvm.getLV(sdUUID, volUUID).tags
if TAG_VOL_UNINIT in tags:
log.warning("Reloading uninitialized volume %s/%s", sdUUID, volUUID)
lvm.invalidateVG(sdUUID)
tags = lvm.getLV(sdUUID, volUUID).tags
if TAG_VOL_UNINIT in tags:
log.error("Found uninitialized volume: %s/%s", sdUUID, volUUID)
raise se.VolumeDoesNotExist("%s/%s" % (sdUUID, volUUID))
for tag in tags:
if tag.startswith(tagPrefix):
return tag[len(tagPrefix):]
else:
log.error("Missing tag %s in volume: %s/%s. tags: %s", tagPrefix,
sdUUID, volUUID, tags)
raise se.MissingTagOnLogicalVolume(volUUID, tagPrefix)
def changeVolumeTag(self, tagPrefix, uuid):
if tagPrefix not in VOLUME_TAGS:
raise se.LogicalVolumeWrongTagError(tagPrefix)
oldTag = ""
for tag in lvm.getLV(self.sdUUID, self.volUUID).tags:
if tag.startswith(tagPrefix):
oldTag = tag
break
if not oldTag:
raise se.MissingTagOnLogicalVolume(self.volUUID, tagPrefix)
newTag = tagPrefix + uuid
if oldTag != newTag:
lvm.replaceLVTag(self.sdUUID, self.volUUID, oldTag, newTag)
def _getVolumeTag(sdUUID, volUUID, tagPrefix):
for tag in lvm.getLV(sdUUID, volUUID).tags:
if tag.startswith(tagPrefix):
return tag[len(tagPrefix):]
raise se.MissingTagOnLogicalVolume(volUUID, tagPrefix)