def parseRestore(self):
results = {}
results['install-type'] = INSTALL_TYPE_RESTORE
backups = product.findXenSourceBackups()
if len(backups) == 0:
raise AnswerfileException("Could not locate exsisting backup.")
results['backups'] = backups
logger.log("Backup list: %s" % ", ".join(str(b) for b in backups))
nodes = getElementsByTagName(self.top_node, ['backup-disk'])
if len(nodes) == 1:
disk = normalize_disk(getText(nodes[0]))
disk = disktools.getMpathMasterOrDisk(disk)
logger.log("Filtering backup list for disk %s" % disk)
backups = filter(lambda x: x.root_disk == disk, backups)
logger.log("Backup list filtered: %s" % ", ".join(str(b) for b in backups))
if len(backups) > 1:
logger.log("Multiple backups found. Aborting...")
raise AnswerfileException("Multiple backups were found. Unable to deduce which backup to restore from.")
elif len(backups) == 0:
logger.log("Unable to find a backup to restore. Aborting...")
raise AnswerfileException("Unable to find a backup to restore.")
logger.log("Restoring backup %s." % str(backups[0]))
results['backup-to-restore'] = backups[0]
return results
def fixMpathResults(results):
# update primary disk
primary_disk = None
if 'primary-disk' in results:
primary_disk = disktools.getMpathMasterOrDisk(results['primary-disk'])
results['primary-disk'] = primary_disk
# update all other disks
if 'guest-disks' in results:
disks = []
for disk in results['guest-disks']:
master = disktools.getMpathMaster(disk)
if master:
# CA-38329: disallow device mapper nodes (except primary disk) as these won't exist
# at XenServer boot and therefore cannot be added as physical volumes to Local SR.
# Also, since the DM nodes are multipathed SANs it doesn't make sense to include them
# in the "Local" SR.
if master != primary_disk:
raise Exception(
"Non-local disk %s specified to be added to Local SR" %
disk)
disk = master
disks.append(disk)
results['guest-disks'] = disks
return results
def parseExistingInstallation(self):
results = {}
inst = getElementsByTagName(self.top_node, ['existing-installation'],
mandatory=True)
disk = normalize_disk(getText(inst[0]))
xelogging.log("Normalized disk: %s" % disk)
disk = disktools.getMpathMasterOrDisk(disk)
xelogging.log('Primary disk: ' + disk)
results['primary-disk'] = disk
installations = product.findXenSourceProducts()
installations = filter(
lambda x: x.primary_disk == disk or diskutil.idFromPartition(
x.primary_disk) == disk, installations)
if len(installations) == 0:
raise AnswerfileException, "Could not locate the installation specified to be reinstalled."
elif len(installations) > 1:
# FIXME non-multipath case?
xelogging.log(
"Warning: multiple paths detected - recommend use of --device_mapper_multipath=yes"
)
xelogging.log("Warning: selecting 1st path from %s" %
str(map(lambda x: x.primary_disk, installations)))
results['installation-to-overwrite'] = installations[0]
return results