def export_zpools():
''' Export all imported pools
'''
zpool_list = pool_list("status")
for name in zpool_list:
exec_cmd_outputs_to_log(["/usr/sbin/zpool", "export", name], logging)
def get_zpool_free_size(name):
'''Return free size, available for pool's top-level filesystem.
Pool is imported if necessary
'''
status = exec_cmd_outputs_to_log(["/usr/sbin/zpool", "list", name],
logging)
if status != 0:
status = exec_cmd_outputs_to_log(
["/usr/sbin/zpool", "import", "-N", name], logging)
if status != 0:
logging.warning(("Couldn't import pool %s, "
"you can try to run "
"\"zpool import -Nf %s\" "
"before proceeding"), name, name)
if status == 0:
try:
argslist = [
"/usr/sbin/zfs", "get", "-Hp", "-o", "value", "available", name
]
(zfsout, zfserr) = Popen(argslist, stdout=PIPE,
stderr=PIPE).communicate()
except OSError, err:
logging.error("OSError occured during zfs call: %s", err)
return -1
if zfserr:
logging.error("Error occured during zpool call: %s", zfserr)
return -1
return int(zfsout)
def get_zpool_be_names(name):
''' Return list of names which seem to be names of zpool boot environments.
Pool is imported if necessary
'''
be_names = list()
prefix = "%s/ROOT" % (name)
status = exec_cmd_outputs_to_log(["/usr/sbin/zpool", "list", name],
logging)
if status != 0:
status = exec_cmd_outputs_to_log(
["/usr/sbin/zpool", "import", "-N", name], logging)
if status != 0:
logging.warning(("Couldn't import pool %s, "
"you can try to run "
"\"zpool import -Nf %s\" "
"before proceeding"), name, name)
if status == 0:
try:
argslist = [
"/usr/sbin/zfs", "list", "-t", "filesystem", "-d", "1", "-H",
"-o", "name", "-r", prefix
]
(zfsout, zfserr) = Popen(argslist,
stdout=PIPE,
universal_newlines=True,
stderr=PIPE).communicate()
except OSError as err:
logging.error("OSError occured during zfs call: %s", err)
return be_names
if zfserr:
logging.error("Error occured during zfs call: %s", zfserr)
return be_names
line = zfsout.splitlines(False)
for entry in line:
prefix_slash = "%s/" % (prefix)
if entry.startswith(prefix_slash):
be_names.append(entry.split(prefix_slash)[1])
return be_names
def exec_cmd(cmd, description):
''' Execute the given command.
Args:
cmd: Command to execute. The command and it's arguments
should be provided as a list, suitable for used
with subprocess.Popen(shell=False)
description: Description to use for printing errors.
Raises:
InstallationError
'''
logging.debug("Executing: %s", " ".join(cmd))
if exec_cmd_outputs_to_log(cmd, logging) != 0:
logging.error("Failed to %s", description)
raise ti_utils.InstallationError
def exec_cmd(cmd, description):
''' Execute the given command.
Args:
cmd: Command to execute. The command and it's arguments
should be provided as a list, suitable for used
with subprocess.Popen(shell=False)
description: Description to use for printing errors.
Raises:
InstallationError
'''
logging.debug("Executing: %s", " ".join(cmd))
if exec_cmd_outputs_to_log(cmd, logging) != 0:
logging.error("Failed to %s", description)
raise ti_utils.InstallationError