third-party-mirrors/zfs_autobackup
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option to clear refreservation for new filesystems

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This commit is contained in:
Edwin Eefting 2016-02-17 17:14:09 +01:00
parent 1e4e88d022
commit b2f6743721
1 changed files with 14 additions and 8 deletions
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22
zfs_autobackup
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@ -1,5 +1,5 @@
#!/usr/bin/env python
# -*- coding: utf8 -*-
# -*- coding: utf8 -*-
from __future__ import print_function
import os
@ -195,7 +195,7 @@ specify buffer_size to use mbuffer (or alike) to apply buffering where neccesary
local to local:
local send -> local buffer -> local receive
local to remote and remote to local:
local to remote and remote to local:
local send -> local buffer -> ssh -> remote buffer -> remote receive
remote send -> remote buffer -> ssh -> local buffer -> local receive
@ -271,12 +271,12 @@ def zfs_transfer(ssh_source, source_filesystem, first_snapshot, second_snapshot,
if source_proc.returncode:
raise(subprocess.CalledProcessError(source_proc.returncode, source_cmd))
#zfs recv sometimes gives an exitcode 1 while the transfer was succesfull, therefore we ignore exit 1's and do an extra check to see if the snapshot is there.
#zfs recv sometimes gives an exitcode 1 while the transfer was succesfull, therefore we ignore exit 1's and do an extra check to see if the snapshot is there.
if target_proc.returncode and target_proc.returncode!=1:
raise(subprocess.CalledProcessError(target_proc.returncode, target_cmd))
debug("Verifying if snapshot exists on target")
run(ssh_to=ssh_target, cmd=["zfs", "list", target_filesystem+"@"+second_snapshot ])
run(ssh_to=ssh_target, cmd=["zfs", "list", target_filesystem+"@"+second_snapshot ])
@ -293,7 +293,7 @@ def zfs_get_backupped_filesystems(ssh_to, backup_name, target_fs):
"""get filesystems that where once backupped to target but are no longer selected on source
these are filesystems that are not in the list in target_filesystems.
these are filesystems that are not in the list in target_filesystems.
this happens when filesystems are destroyed or unselected on the source.
"""
@ -348,6 +348,7 @@ parser.add_argument('--no-snapshot', action='store_true', help='dont create new
parser.add_argument('--no-send', action='store_true', help='dont send snapshots (usefull to only do a cleanup)')
parser.add_argument('--destroy-stale', action='store_true', help='Destroy stale backups that have no more snapshots. Be sure to verify the output before using this! ')
parser.add_argument('--clear-refreservation', action='store_true', help='Set refreservation property to none for new filesystems. Usefull when backupping SmartOS volumes.')
parser.add_argument('--compress', action='store_true', help='use compression during zfs send/recv')
parser.add_argument('--test', action='store_true', help='dont change anything, just show what would be done (still does all read-only operations)')
@ -451,8 +452,14 @@ for source_filesystem in source_filesystems:
ssh_target=args.ssh_target, target_filesystem=target_filesystem)
#now that we succesfully transferred this snapshot, the previous snapshot is obsolete:
target_obsolete_snapshots[target_filesystem].append(latest_target_snapshot)
source_obsolete_snapshots[source_filesystem].append(latest_target_snapshot)
if latest_target_snapshot:
target_obsolete_snapshots[target_filesystem].append(latest_target_snapshot)
source_obsolete_snapshots[source_filesystem].append(latest_target_snapshot)
#we just received a new filesytem?
else:
if args.clear_refreservation:
debug("Clearing refreservation to save space.")
run(ssh_to=args.ssh_target, test=args.test, cmd=["zfs", "set", "refreservation=none", target_filesystem ])
latest_target_snapshot=send_snapshot
@ -499,4 +506,3 @@ if target_destroys:
verbose("All done")