third-party-mirrors/zfs_autobackup
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added rollback options and clear_mountpoint option

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This commit is contained in:
Edwin Eefting 2016-03-31 16:04:37 +02:00
parent b2f6743721
commit 5ce39aba2e
1 changed files with 13 additions and 0 deletions
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zfs_autobackup
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@ -349,6 +349,8 @@ parser.add_argument('--no-send', action='store_true', help='dont send snapshots
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('--clear-mountpoint', action='store_true', help='Clear mountpoint property, to prevent the received filesystem from mounting over existing filesystems.')
parser.add_argument('--rollback', action='store_true', help='Rollback changes on the target before starting a backup. (normally you can prevent changes by setting the readonly property on the target_fs to on)')
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)')
@ -446,7 +448,14 @@ for source_filesystem in source_filesystems:
#now actually send the snapshots
if not args.no_send:
if send_snapshots and args.rollback and latest_target_snapshot:
#roll back any changes on target
debug("Rolling back target to latest snapshot.")
run(ssh_to=args.ssh_target, test=args.test, cmd=["zfs", "rollback", target_filesystem+"@"+latest_target_snapshot ])
for send_snapshot in send_snapshots:
zfs_transfer(
ssh_source=args.ssh_source, source_filesystem=source_filesystem, first_snapshot=latest_target_snapshot, second_snapshot=send_snapshot,
ssh_target=args.ssh_target, target_filesystem=target_filesystem)
@ -461,6 +470,10 @@ for source_filesystem in source_filesystems:
debug("Clearing refreservation to save space.")
run(ssh_to=args.ssh_target, test=args.test, cmd=["zfs", "set", "refreservation=none", target_filesystem ])
if args.clear_mountpoint:
debug("Clearing mountpoint property to prevent mounting in the wrong place.")
run(ssh_to=args.ssh_target, test=args.test, cmd=["zfs", "inherit", "mountpoint", target_filesystem ])
latest_target_snapshot=send_snapshot