Franziska Kunsmann
f8bbe00d47
All checks were successful
bundlewrap/pipeline/head This commit looks good
141 lines
4.4 KiB
Python
141 lines
4.4 KiB
Python
from pipes import quote
|
|
|
|
from bundlewrap.exceptions import BundleError
|
|
from bundlewrap.items import Item
|
|
from bundlewrap.utils.text import mark_for_translation as _
|
|
|
|
|
|
def create(node, path, options):
|
|
option_list = []
|
|
for option, value in sorted(options.items()):
|
|
# We must exclude the 'mounted' property here because it's a
|
|
# read-only "informational" property.
|
|
if option != 'mounted' and value is not None:
|
|
option_list.append("-o {}={}".format(quote(option), quote(value)))
|
|
option_args = " ".join(option_list)
|
|
|
|
node.run(
|
|
"zfs create {} {}".format(
|
|
option_args,
|
|
quote(path),
|
|
),
|
|
may_fail=True,
|
|
)
|
|
|
|
if options['mounted'] == 'no':
|
|
set_option(node, path, 'mounted', 'no')
|
|
|
|
|
|
def does_exist(node, path):
|
|
status_result = node.run(
|
|
"zfs list {}".format(quote(path)),
|
|
may_fail=True,
|
|
)
|
|
return status_result.return_code == 0
|
|
|
|
|
|
def get_option(node, path, option):
|
|
cmd = "zfs get -Hp -o value {} {}".format(quote(option), quote(path))
|
|
# We always expect this to succeed since we don't call this function
|
|
# if we have already established that the dataset does not exist.
|
|
status_result = node.run(cmd)
|
|
return status_result.stdout.decode('utf-8').strip()
|
|
|
|
def set_option(node, path, option, value):
|
|
if option == 'mounted':
|
|
# 'mounted' is a read-only property that can not be altered by
|
|
# 'set'. We need to call 'zfs mount tank/foo'.
|
|
node.run(
|
|
"zfs {} {}".format(
|
|
"mount" if value == 'yes' else "unmount",
|
|
quote(path),
|
|
),
|
|
may_fail=True,
|
|
)
|
|
else:
|
|
node.run(
|
|
"zfs set {}={} {}".format(
|
|
quote(option),
|
|
quote(value),
|
|
quote(path),
|
|
),
|
|
may_fail=True,
|
|
)
|
|
|
|
|
|
class ZFSDataset(Item):
|
|
"""
|
|
Creates ZFS datasets and manages their options.
|
|
"""
|
|
BUNDLE_ATTRIBUTE_NAME = "zfs_datasets"
|
|
ITEM_ATTRIBUTES = {
|
|
'atime': None,
|
|
'acltype': None,
|
|
'compression': None,
|
|
'mountpoint': None,
|
|
'quota': None,
|
|
'recordsize': None,
|
|
'dedup': None,
|
|
}
|
|
ITEM_TYPE_NAME = "zfs_dataset"
|
|
|
|
def __repr__(self):
|
|
return f"<ZFSDataset name:{self.name} {' '.join(f'{k}:{v}' for k,v in self.attributes.items())}>"
|
|
|
|
def cdict(self):
|
|
cdict = {}
|
|
for option, value in self.attributes.items():
|
|
if option == 'mountpoint' and value is None:
|
|
value = "none"
|
|
if value is not None:
|
|
cdict[option] = value
|
|
cdict['mounted'] = 'no' if cdict.get('mountpoint') in (None, "none") else 'yes'
|
|
return cdict
|
|
|
|
def fix(self, status):
|
|
if status.must_be_created:
|
|
create(self.node, self.name, status.cdict)
|
|
else:
|
|
for option in status.keys_to_fix:
|
|
set_option(self.node, self.name, option, status.cdict[option])
|
|
|
|
def get_auto_deps(self, items):
|
|
pool = self.name.split("/")[0]
|
|
pool_item = "zfs_pool:{}".format(pool)
|
|
pool_item_found = False
|
|
|
|
for item in items:
|
|
if item.ITEM_TYPE_NAME == "zfs_pool" and item.name == pool:
|
|
# Add dependency to the pool this dataset resides on.
|
|
pool_item_found = True
|
|
yield pool_item
|
|
elif (
|
|
item.ITEM_TYPE_NAME == "zfs_dataset" and
|
|
self.name != item.name and
|
|
self.name.startswith(item.name + "/")
|
|
):
|
|
# Find all other datasets that are parents of this
|
|
# dataset.
|
|
# XXX Could be optimized by finding the "largest"
|
|
# parent only.
|
|
yield item.id
|
|
|
|
if not pool_item_found:
|
|
raise BundleError(_(
|
|
"ZFS dataset {dataset} resides on pool {pool} but item "
|
|
"{dep} does not exist"
|
|
).format(
|
|
dataset=self.name,
|
|
pool=pool,
|
|
dep=pool_item,
|
|
))
|
|
|
|
def sdict(self):
|
|
if not does_exist(self.node, self.name):
|
|
return None
|
|
|
|
sdict = {}
|
|
for option, value in self.attributes.items():
|
|
sdict[option] = get_option(self.node, self.name, option)
|
|
sdict['mounted'] = get_option(self.node, self.name, 'mounted')
|
|
return sdict
|