def create(self, option=None):
"""
Create the dataset with options.
"""
if option is None:
cmd = [Env.syspaths.zfs, 'create', self.name]
else:
cmd = [Env.syspaths.zfs, 'create'] + option + [self.name]
ret, _, _ = vcall(cmd, log=self.log)
if ret == 0:
return True
else:
return False
def rename(self, name=None, option=None):
"""
Rename the dataset.
"""
if option is None:
cmd = [Env.syspaths.zfs, 'rename', self.name, name]
else:
cmd = [Env.syspaths.zfs, 'rename'] + option + [self.name, name]
ret, _, _ = vcall(cmd, log=self.log)
if ret == 0:
return True
else:
return False
def setprop(self, propname, propval, err_to_warn=False, err_to_info=False):
"""
Set Dataset property value.
Return True is success else return False.
"""
cmd = [Env.syspaths.zfs, 'set', propname + '=' + propval, self.name]
ret, out, err = vcall(cmd,
log=self.log,
err_to_warn=err_to_warn,
err_to_info=err_to_info)
if ret == 0:
return True
else:
return False
def clone(self, name, option=None):
"""
Clone the dataset with options
Return the clone dataset object.
Return False on failure.
"""
if option is None:
cmd = [Env.syspaths.zfs, 'clone', self.name, name]
else:
cmd = [Env.syspaths.zfs, 'clone'] + option + [self.name, name]
ret, _, _ = vcall(cmd, log=self.log)
if ret == 0:
return Dataset(name)
else:
return False
def snapshot(self, snapname=None, recursive=False):
"""
Snapshot the dataset.
Return the snapshot dataset object.
Return False on error.
"""
if snapname is None:
raise ex.Error("snapname should be defined")
snapdataset = self.name + "@" + snapname
cmd = [Env.syspaths.zfs, 'snapshot']
if recursive:
cmd.append("-r")
cmd.append(snapdataset)
ret, _, _ = vcall(cmd, log=self.log)
if ret == 0:
return Dataset(snapdataset)
else:
return False
def zfs_setprop(dataset='undef_ds',
propname='undef_prop',
propval='undef_val',
log=None):
"""
Set the dataset property <propname> to value <propval>.
"""
current = zfs_getprop(dataset, propname)
if current == "":
# dataset does not exist
return False
if current == propval:
return True
cmd = [Env.syspaths.zfs, 'set', propname + '=' + propval, dataset]
ret, _, _ = vcall(cmd, log=log)
if ret == 0:
return True
else:
return False
def zpool_setprop(pool='undef_pool',
propname='undef_prop',
propval='undef_val',
log=None):
"""
Set the dataset property <propname> to value <propval>.
"""
current = zpool_getprop(pool, propname)
if current == "":
# pool does not exist
return False
if current == propval:
return True
cmd = [Env.syspaths.zpool, 'set', propname + '=' + propval, pool]
ret, _, _ = vcall(cmd, log=log)
if ret == 0:
return True
else:
return False
def vcall(self, *args, **kwargs):
"""
Wrap vcall, setting the resource logger
"""
kwargs["log"] = self.log
return vcall(*args, **kwargs)
def vcall(self, cmd):
if self.node is not None:
cmd = [' '.join(cmd)]
cmd = Env.rsh.split() + [self.node] + cmd
return vcall(cmd, log=self.log)
def test_vcall(non_existing_file):
"""
vcall()
"""
ret, out, err = vcall([])
assert ret == 0
assert out == ""
assert err == ""
ret, out, err = vcall(["ls2"])
assert ret == 1
ret, out, err = vcall(["ls", non_existing_file])
assert is_string(out) is True
assert is_string(err) is True
assert ret > 0
# redirects
cmd1 = 'ls'
_, _, _ = vcall([cmd1, non_existing_file], err_to_warn=True)
_, _, _ = vcall([cmd1, non_existing_file], err_to_info=True)
_, _, _ = call([cmd1], info=False, outlog=False, outdebug=True)
cmd2 = "ls " + non_existing_file + " 2>/dev/stdout"
_, _, _ = vcall(cmd2, shell=True, err_to_info=True)
_, _, _ = vcall(cmd2, shell=True, err_to_warn=True)
_, _, _ = vcall(cmd2, shell=True, warn_to_info=False)
_, _, _ = vcall(cmd2, shell=True, outlog=False, outdebug=True)
cmd3 = "ls >/dev/stderr"
_, _, _ = vcall(cmd3, shell=True, warn_to_info=True)
_, _, _ = vcall(cmd3, shell=True, warn_to_info=False)
_, _, _ = vcall(cmd3, shell=True, errlog=False, errdebug=True)
# to cache
ret, out, err = vcall(cmd1, shell=True, cache=True)
assert is_string(out) is True
assert is_string(err) is True
assert ret == 0
# from cache
_, out2, _ = vcall(cmd1, shell=True, cache=True)
assert out == out2
# cache discard
_, _, _ = vcall("touch " + non_existing_file, shell=True, cache=True)
_, _, _ = vcall("test -f " + non_existing_file, shell=True, cache=True)
try:
os.unlink(non_existing_file)
except:
pass
ret, _, _ = vcall("test -f " + non_existing_file, shell=True, cache=False)
assert ret == 1