def destroy_snapshots(shell: Shell, snapshots: [Snapshot]):
for dataset, snapshots in sortedgroupby(snapshots, lambda snapshot: snapshot.dataset):
names = {snapshot.name for snapshot in snapshots}
logger.info("On %r for dataset %r destroying snapshots %r", shell, dataset, names)
while names:
chunk = set()
sum_len = len(dataset)
for name in sorted(names):
new_sum_len = sum_len + len(name) + 1
if new_sum_len >= ARG_MAX:
break
chunk.add(name)
sum_len = new_sum_len
args = ["zfs", "destroy", f"{dataset}@" + ",".join(sorted(chunk))]
try:
shell.exec(args)
names -= chunk
except ExecException as e:
if m := re.search(r"cannot destroy snapshot .+?@(.+?): dataset is busy", e.stdout):
reason = "busy"
name = m.group(1)
elif m := re.search(r"cannot destroy '.+?@(.+?)': snapshot has dependent clones", e.stdout):
reason = "cloned"
name = m.group(1)
else:
raise
logger.info("Snapshot %r on dataset %r is %s, skipping", name, dataset, reason)
names.discard(name)
def destroy_snapshots(shell: Shell, snapshots: [Snapshot]):
for dataset, snapshots in sortedgroupby(snapshots,
lambda snapshot: snapshot.dataset):
names = [snapshot.name for snapshot in snapshots]
logger.info("On %r for dataset %r destroying snapshots %r", shell,
dataset, names)
args = ["zfs", "destroy", f"{dataset}@" + "%".join(names)]
shell.exec(args)
def destroy_snapshots(shell: Shell, snapshots: [Snapshot]):
for dataset, snapshots in sortedgroupby(snapshots,
lambda snapshot: snapshot.dataset):
names = [snapshot.name for snapshot in snapshots]
logger.info("On %r for dataset %r destroying snapshots %r", shell,
dataset, names)
while names:
args = ["zfs", "destroy", f"{dataset}@" + ",".join(names)]
try:
shell.exec(args)
break
except ExecException as e:
m = re.search(
r"cannot destroy snapshot .+?@(.+?): dataset is busy",
e.stdout)
if m is None:
raise
name = m.group(1)
logger.info("Snapshot %r on dataset %r is busy, skipping",
name, dataset)
names.remove(name)
def _transport_for_replication_tasks(self, replication_tasks):
return sortedgroupby(
replication_tasks,
lambda replication_task: replication_task.transport, False)