norohind/zfs_autobackup
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added path strip option, usefull when replicating between 2 smartOS machines

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This commit is contained in:
Edwin Eefting 2016-06-13 23:26:28 +02:00
parent 566c494b55
commit 274ca0f91f
1 changed files with 14 additions and 4 deletions
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zfs_autobackup
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@ -329,6 +329,11 @@ def determine_destroy_list(snapshots, days):
return(ret)
def lstrip_path(path, count):
return("/".join(path.split("/")[count:]))
################################################################## ENTRY POINT
@ -347,11 +352,15 @@ parser.add_argument('target_fs', help='Target filesystem')
parser.add_argument('--no-snapshot', action='store_true', help='dont create new snapshot (usefull for finishing uncompleted backups, or cleanups)')
parser.add_argument('--no-send', action='store_true', help='dont send snapshots (usefull to only do a cleanup)')
parser.add_argument('--strip-path', default=0, type=int, help='number of directory to strip from path (use 1 when cloning zones between 2 SmartOS machines)')
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. (recommended)')
parser.add_argument('--clear-mountpoint', action='store_true', help='Sets canmount=noauto property, to prevent the received filesystem from mounting over existing filesystems. (recommended)')
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)')
parser.add_argument('--verbose', action='store_true', help='verbose output')
@ -372,14 +381,15 @@ source_filesystems=zfs_get_selected_filesystems(args.ssh_source, args.backup_nam
#nothing todo
if not source_filesystems:
error("No filesystems source selected, please set autobackup:{0} on {1}".format(args.backup_name,args.ssh_source))
error("No filesystems source selected, please do a 'zfs set autobackup:{0}=true' on {1}".format(args.backup_name,args.ssh_source))
sys.exit(1)
#determine target filesystems (just append args.target_fs prefix)
#determine target filesystems
target_filesystems=[]
for source_filesystem in source_filesystems:
target_filesystems.append(args.target_fs+"/"+source_filesystem)
#append args.target_fs prefix and strip args.strip_path paths from source_filesystem
target_filesystems.append(args.target_fs + "/" + lstrip_path(source_filesystem, args.strip_path))
#create new snapshot?
if not args.no_snapshot:
@ -412,7 +422,7 @@ target_obsolete_snapshots={}
#determine which snapshots to send for each filesystem
for source_filesystem in source_filesystems:
target_filesystem=args.target_fs+"/"+source_filesystem
target_filesystem=args.target_fs + "/" + lstrip_path(source_filesystem, args.strip_path)
if source_filesystem not in source_snapshots:
#this happens if you use --no-snapshot and there are new filesystems without snapshots