def rebaseVolumeRollback(cls, taskObj, sdUUID, srcImg, srcVol, dstFormat,
srcParent, unsafe):
"""
Rebase volume rollback
"""
cls.log.info(
'rebase volume rollback (sdUUID=%s srcImg=%s srcVol=%s '
'dstFormat=%s srcParent=%s)', sdUUID, srcImg, srcVol, dstFormat,
srcParent)
imageResourcesNamespace = sd.getNamespace(
sdUUID, resourceFactories.IMAGE_NAMESPACE)
with rmanager.acquireResource(imageResourcesNamespace, srcImg,
rm.LockType.exclusive):
vol = sdCache.produce(sdUUID).produceVolume(srcImg, srcVol)
vol.prepare(rw=True, chainrw=True, setrw=True)
volumePath = vol.getVolumePath()
backingVolPath = getBackingVolumePath(srcImg, srcParent)
try:
qemuimg.rebase(volumePath, backingVolPath,
fmt2str(vol.getFormat()),
fmt2str(int(dstFormat)), misc.parseBool(unsafe),
vars.task.aborting)
vol.setParent(srcParent)
vol.recheckIfLeaf()
except qemuimg.QImgError:
cls.log.exception(
'cannot rollback rebase for volume %s on '
'%s', volumePath, backingVolPath)
raise se.MergeVolumeRollbackError(srcVol)
finally:
vol.teardown(sdUUID, srcVol)
def rebaseVolumeRollback(cls, taskObj, sdUUID, srcImg,
srcVol, dstFormat, srcParent, unsafe):
"""
Rebase volume rollback
"""
cls.log.info('rebase volume rollback (sdUUID=%s srcImg=%s srcVol=%s '
'dstFormat=%s srcParent=%s)', sdUUID, srcImg, srcVol,
dstFormat, srcParent)
imageResourcesNamespace = sd.getNamespace(
sdUUID,
resourceFactories.IMAGE_NAMESPACE)
with rmanager.acquireResource(imageResourcesNamespace,
srcImg, rm.LockType.exclusive):
vol = sdCache.produce(sdUUID).produceVolume(srcImg, srcVol)
vol.prepare(rw=True, chainrw=True, setrw=True)
volumePath = vol.getVolumePath()
backingVolPath = getBackingVolumePath(srcImg, srcParent)
try:
qemuimg.rebase(volumePath, backingVolPath,
fmt2str(vol.getFormat()),
fmt2str(int(dstFormat)),
misc.parseBool(unsafe), vars.task.aborting)
vol.setParent(srcParent)
vol.recheckIfLeaf()
except qemuimg.QImgError:
cls.log.exception('cannot rollback rebase for volume %s on '
'%s', volumePath, backingVolPath)
raise se.MergeVolumeRollbackError(srcVol)
finally:
vol.teardown(sdUUID, srcVol)
def rebaseVolumeRollback(cls, taskObj, sdUUID, srcImg, srcVol, dstFormat, srcParent, unsafe):
"""
Rebase volume rollback
"""
cls.log.info("sdUUID=%s srcImg=%s srcVol=%s dstFormat=%s srcParent=%s",
sdUUID, srcImg, srcVol, dstFormat, srcParent)
imageResourcesNamespace = sd.getNamespace(sdUUID, resourceFactories.IMAGE_NAMESPACE)
with rmanager.acquireResource(imageResourcesNamespace, srcImg, rm.LockType.exclusive):
try:
vol = sdCache.produce(sdUUID).produceVolume(imgUUID=srcImg, volUUID=srcVol)
vol.prepare(rw=True, chainrw=True, setrw=True)
except Exception:
cls.log.error("sdUUID=%s srcImg=%s srcVol=%s dstFormat=%s srcParent=%s",
sdUUID, srcImg, srcVol, dstFormat, srcParent, exc_info=True)
raise
try:
(rc, out, err) = qemuRebase(vol.getVolumePath(), vol.getFormat(),
os.path.join('..', srcImg, srcParent),
int(dstFormat), misc.parseBool(unsafe),
vars.task.aborting, False)
if rc:
raise se.MergeVolumeRollbackError(srcVol)
vol.setParent(srcParent)
vol.recheckIfLeaf()
except Exception:
cls.log.error("sdUUID=%s srcImg=%s srcVol=%s dstFormat=%s srcParent=%s",
sdUUID, srcImg, srcVol, dstFormat, srcParent, exc_info=True)
raise
finally:
vol.teardown(sdUUID, srcVol)
