def changelv(vg, lvs, attrs):
"""
Change multiple attributes on multiple LVs.
vg: VG name
lvs: a single LV name or iterable of LV names.
attrs: an iterable of (attr, value) pairs),
e.g. (('--available', 'y'), ('--permission', 'rw')
Note:
You may activate an activated LV without error
but lvchange returns an error (RC=5) when activating rw if already rw
"""
lvs = _normalizeargs(lvs)
# If it fails or not we (may be) change the lv,
# so we invalidate cache to reload these volumes on first occasion
lvnames = tuple("%s/%s" % (vg, lv) for lv in lvs)
cmd = ["lvchange"]
cmd.extend(LVM_NOBACKUP)
if isinstance(attrs[0], str):
# ("--attribute", "value")
cmd.extend(attrs)
else:
# (("--aa", "v1"), ("--ab", "v2"))
for attr in attrs:
cmd.extend(attr)
cmd.extend(lvnames)
rc, out, err = _lvminfo.cmd(tuple(cmd), _lvminfo._getVGDevs((vg, )))
_lvminfo._invalidatelvs(vg, lvs)
if rc != 0 and len(out) < 1:
raise se.StorageException("%d %s %s\n%s/%s" % (rc, out, err, vg, lvs))
def changelv(vg, lvs, attrName, attrValue):
# Note:
# You may activate an activated LV without error
# but lvchange returns an error (RC=5) when activating rw if already rw
lvs = _normalizeargs(lvs)
# If it fails or not we (may be) change the lv,
# so we invalidate cache to reload these volumes on first occasion
lvnames = tuple("%s/%s" % (vg, lv) for lv in lvs)
cmd = ("lvchange", ) + LVM_NOBACKUP + (attrName, attrValue) + lvnames
rc, out, err = _lvminfo.cmd(cmd)
_lvminfo._invalidatelvs(vg, lvs)
if rc != 0 and len(out) < 1:
raise se.StorageException("%d %s %s\n%s/%s" % (rc, out, err, vg, lvs))
def copyToImage(dstImgPath, methodArgs):
totalSize = getLengthFromArgs(methodArgs)
fileObj = methodArgs['fileObj']
cmd = [constants.EXT_DD, "of=%s" % dstImgPath, "bs=%s" % constants.MEGAB]
p = utils.execCmd(cmd, sudo=False, sync=False,
deathSignal=signal.SIGKILL)
try:
_copyData(fileObj, p.stdin, totalSize)
p.stdin.close()
if not p.wait(WAIT_TIMEOUT):
log.error("timeout waiting for dd process")
raise se.StorageException()
if p.returncode != 0:
log.error("dd error - code %s, stderr %s",
p.returncode, p.stderr.read(1000))
raise se.MiscFileWriteException()
except Exception:
if p.returncode is None:
p.kill()
raise
def _extendSizeRaw(self, newSize):
volPath = self.getVolumePath()
curSizeBytes = self.oop.os.stat(volPath).st_size
newSizeBytes = newSize * BLOCK_SIZE
# No real sanity checks here, they should be included in the calling
# function/method. We just validate the sizes to be consistent since
# they're computed and used in the pre-allocated case.
if newSizeBytes == curSizeBytes:
return # Nothing to do
elif curSizeBytes <= 0:
raise se.StorageException("Volume size is impossible: %s" %
curSizeBytes)
elif newSizeBytes < curSizeBytes:
raise se.VolumeResizeValueError(newSize)
if self.getType() == volume.PREALLOCATED_VOL:
# for pre-allocated we need to zero to the file size
misc.ddWatchCopy("/dev/zero", volPath, vars.task.aborting,
newSizeBytes - curSizeBytes, curSizeBytes)
else:
# for sparse files we can just truncate to the correct size
self.oop.truncateFile(volPath, newSizeBytes)