def _initpv(device, metadataSize=0):
if metadataSize > 0:
# Size for pvcreate should be with units k|m|g
metadatasize = str(metadataSize) + 'm'
cmd = ["pvcreate", "--metadatasize", metadatasize, device]
else:
cmd = ["pvcreate", "--pvmetadatacopies", "0", device]
#pvcreate on a dev that is already a PV but not in a VG returns rc = 0.
#The device is created with the new parameters.
rc, out, err = _lvminfo.cmd(cmd)
if rc != 0:
# This could have failed because a VG
# was removed on another host. Let us
# check with lvm
if isPvPartOfVg(device):
raise se.PhysDevInitializationError(device)
try:
devicemapper.removeMappingsHoldingDevice(os.path.basename(device))
except OSError, e:
if e.errno == errno.ENODEV:
raise se.PhysDevInitializationError("%s: %s" %
(device, str(e)))
else:
raise
rc, out, err = _lvminfo.cmd(cmd)
if rc != 0:
raise se.PhysDevInitializationError(device)
def createVG(vgName,
devices,
initialTag,
metadataSize,
extentsize="128m",
force=False):
pvs = [_fqpvname(pdev) for pdev in _normalizeargs(devices)]
_checkpvsblksize(pvs)
_initpvs(pvs, metadataSize, force)
# Activate the 1st PV metadata areas
cmd = ["pvchange", "--metadataignore", "n"]
cmd.append(pvs[0])
rc, out, err = _lvminfo.cmd(cmd, tuple(pvs))
if rc != 0:
raise se.PhysDevInitializationError(pvs[0])
options = ["--physicalextentsize", extentsize]
if initialTag:
options.extend(("--addtag", initialTag))
cmd = ["vgcreate"] + options + [vgName] + pvs
rc, out, err = _lvminfo.cmd(cmd, tuple(pvs))
if rc == 0:
_lvminfo._invalidatepvs(pvs)
_lvminfo._invalidatevgs(vgName)
log.debug("Cache after createvg %s", _lvminfo._vgs)
else:
raise se.VolumeGroupCreateError(vgName, pvs)
def _initpvs(devices, metadataSize, force=False):
def _initpvs_removeHolders():
"""Remove holders for all devices."""
for device in devices:
try:
devicemapper.removeMappingsHoldingDevice(
os.path.basename(device))
except OSError as e:
if e.errno == errno.ENODEV:
raise se.PhysDevInitializationError("%s: %s" %
(device, str(e)))
else:
raise
if force is True:
options = ("-y", "-ff")
_initpvs_removeHolders()
else:
options = tuple()
rc, out, err = _createpv(devices, metadataSize, options)
_lvminfo._invalidatepvs(devices)
if rc != 0:
log.error("pvcreate failed with rc=%s", rc)
log.error("%s, %s", out, err)
raise se.PhysDevInitializationError(str(devices))
return (set(devices), set(), rc, out, err)
def _initpvs_removeHolders():
"""Remove holders for all devices."""
for device in devices:
try:
devicemapper.removeMappingsHoldingDevice(
os.path.basename(device))
except OSError as e:
if e.errno == errno.ENODEV:
raise se.PhysDevInitializationError("%s: %s" %
(device, str(e)))
else:
raise
