mirror of
https://github.com/bashclub/zfs-housekeeping.git
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177 lines
6.5 KiB
Markdown
177 lines
6.5 KiB
Markdown
# zfs-keep-and-clean
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## Script cleansnaps.sh (neu)
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Snapshots nach Datasets und Muster im Snapshotnamen filtern und ggf. löschen.
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Es können alle bis auf die letzten x Snapshots behalten werden (-k keep).
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Zu löschende Snapshots werden mit einem '-' gekennzeichnet.
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### Aufruf:
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```
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root@zfsrasp~# ./cleansnaps.sh -h
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Aufruf: cleansnaps.sh [-htf] [-k keep] <Datasetfilter> [Snapshotfilter]
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-h Hilfe Anzeigen
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-t Testmodus. Simulation von löschen ohne Nachfragen (benötigt -k)
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-f Echtmodus. Snapshots löschen ohne Nachfragen (benötigt -k)
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-k <Anzahl> Anzahl der letzten Snapshots die behalten werden sollen.
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Rest wird gelöscht. Ohne -t oder -f kommt Abfrage ob gelöscht werden soll.
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```
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### Beispiele:
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Nur Filtern (ohne löschen):
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```
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root@zfsrasp:~# ./cleansnaps.sh backup frequent
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# Gefilterte Datasets:
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NAME USED AVAIL REFER MOUNTPOINT
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backup 3.93M 3.62G 24K /backup
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backup/smbshr 182K 3.62G 50.5K /backup/smbshr
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# Dataset: backup
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# Snapfilter: frequent
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# Anzahl Snaps: 4
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# Liste Snaps:
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+ backup@zfs-auto-snap_frequent-2021-01-01-2030
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+ backup@zfs-auto-snap_frequent-2021-01-01-2045
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+ backup@zfs-auto-snap_frequent-2021-01-01-2100
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+ backup@zfs-auto-snap_frequent-2021-01-01-2115
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# Dataset: backup/smbshr
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# Snapfilter: frequent
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# Anzahl Snaps: 6
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# Liste Snaps:
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+ backup/smbshr@zfs-auto-snap_frequent-2020-12-28-1145
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+ backup/smbshr@zfs-auto-snap_frequent-2020-12-28-1200
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+ backup/smbshr@zfs-auto-snap_frequent-2021-01-01-2030
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+ backup/smbshr@zfs-auto-snap_frequent-2021-01-01-2045
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+ backup/smbshr@zfs-auto-snap_frequent-2021-01-01-2100
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+ backup/smbshr@zfs-auto-snap_frequent-2021-01-01-2115
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root@zfsrasp:~#
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```
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Interaktiv - Filtern und alle außer die letzten 10 löschen:
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```
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root@zfsrasp:~# ./cleansnaps.sh -k 10 backup$ daily
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# Gefilterte Datasets:
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NAME USED AVAIL REFER MOUNTPOINT
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backup 4.00M 3.62G 24K /backup
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# Dataset: backup
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# Snapfilter: daily
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# Anzahl Snaps: 12
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# Behalte: 10
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# Anzahl Del. Snaps: 2
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# Liste Snaps:
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- backup@zfs-auto-snap_daily-2020-12-21-0525
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- backup@zfs-auto-snap_daily-2020-12-22-0525
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+ backup@zfs-auto-snap_daily-2020-12-23-0525
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+ backup@zfs-auto-snap_daily-2020-12-24-0525
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+ backup@zfs-auto-snap_daily-2020-12-25-0525
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+ backup@zfs-auto-snap_daily-2020-12-26-0525
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+ backup@zfs-auto-snap_daily-2020-12-27-0525
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+ backup@zfs-auto-snap_daily-2020-12-28-0525
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+ backup@zfs-auto-snap_daily-2020-12-29-0525
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+ backup@zfs-auto-snap_daily-2020-12-30-0525
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+ backup@zfs-auto-snap_daily-2020-12-31-0525
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+ backup@zfs-auto-snap_daily-2021-01-01-0525
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> Snapshots (2 von 12) mit J löschen (Return = weiter): J
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% zfs destroy wird ausgeführt:
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will destroy backup@zfs-auto-snap_daily-2020-12-21-0525
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will reclaim 0B
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will destroy backup@zfs-auto-snap_daily-2020-12-22-0525
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will reclaim 0B
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% Liste nach zfs destroy:
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+ backup@zfs-auto-snap_daily-2020-12-23-0525
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+ backup@zfs-auto-snap_daily-2020-12-24-0525
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+ backup@zfs-auto-snap_daily-2020-12-25-0525
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+ backup@zfs-auto-snap_daily-2020-12-26-0525
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+ backup@zfs-auto-snap_daily-2020-12-27-0525
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+ backup@zfs-auto-snap_daily-2020-12-28-0525
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+ backup@zfs-auto-snap_daily-2020-12-29-0525
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+ backup@zfs-auto-snap_daily-2020-12-30-0525
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+ backup@zfs-auto-snap_daily-2020-12-31-0525
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+ backup@zfs-auto-snap_daily-2021-01-01-0525
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root@zfsrasp:~#
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```
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Testmodus - löschen nur simulieren (ohne Nachfragen):
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```
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root@zfsrasp:~# ./cleansnaps.sh -t -k 5 backup$ daily
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# Gefilterte Datasets:
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NAME USED AVAIL REFER MOUNTPOINT
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backup 3.98M 3.62G 24K /backup
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# Dataset: backup
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# Snapfilter: daily
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# Anzahl Snaps: 10
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# Behalte: 5
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# Anzahl Del. Snaps: 5
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# Liste Snaps:
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- backup@zfs-auto-snap_daily-2020-12-23-0525
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- backup@zfs-auto-snap_daily-2020-12-24-0525
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- backup@zfs-auto-snap_daily-2020-12-25-0525
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- backup@zfs-auto-snap_daily-2020-12-26-0525
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- backup@zfs-auto-snap_daily-2020-12-27-0525
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+ backup@zfs-auto-snap_daily-2020-12-28-0525
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+ backup@zfs-auto-snap_daily-2020-12-29-0525
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+ backup@zfs-auto-snap_daily-2020-12-30-0525
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+ backup@zfs-auto-snap_daily-2020-12-31-0525
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+ backup@zfs-auto-snap_daily-2021-01-01-0525
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# Testmodus - Für folgende Snapshots würde ein destroy ausgeführt:
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backup@zfs-auto-snap_daily-2020-12-23-0525 creation Wed Dec 23 6:25 2020 -
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backup@zfs-auto-snap_daily-2020-12-24-0525 creation Thu Dec 24 6:25 2020 -
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backup@zfs-auto-snap_daily-2020-12-25-0525 creation Fri Dec 25 6:25 2020 -
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backup@zfs-auto-snap_daily-2020-12-26-0525 creation Sat Dec 26 6:25 2020 -
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backup@zfs-auto-snap_daily-2020-12-27-0525 creation Sun Dec 27 6:25 2020 -
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root@zfsrasp:~#
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```
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Forcemodus - löschen ohne Nachfragen:
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```
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root@zfsrasp:~# ./cleansnaps.sh -f -k 6 backup frequent
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# Gefilterte Datasets:
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NAME USED AVAIL REFER MOUNTPOINT
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backup 3.98M 3.62G 24K /backup
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backup/smbshr 182K 3.62G 50.5K /backup/smbshr
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# Dataset: backup
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# Snapfilter: frequent
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# Anzahl Snaps: 4
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# Behalte: 6
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# Anzahl Del. Snaps: 0
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# Liste Snaps:
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+ backup@zfs-auto-snap_frequent-2021-01-01-2000
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+ backup@zfs-auto-snap_frequent-2021-01-01-2015
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+ backup@zfs-auto-snap_frequent-2021-01-01-2030
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+ backup@zfs-auto-snap_frequent-2021-01-01-2045
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% Keine Snapshots zum löschen
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# Dataset: backup/smbshr
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# Snapfilter: frequent
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# Anzahl Snaps: 8
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# Behalte: 6
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# Anzahl Del. Snaps: 2
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# Liste Snaps:
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- backup/smbshr@zfs-auto-snap_frequent-2020-12-21-2130
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- backup/smbshr@zfs-auto-snap_frequent-2020-12-21-2145
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+ backup/smbshr@zfs-auto-snap_frequent-2020-12-28-1145
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+ backup/smbshr@zfs-auto-snap_frequent-2020-12-28-1200
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+ backup/smbshr@zfs-auto-snap_frequent-2021-01-01-2000
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+ backup/smbshr@zfs-auto-snap_frequent-2021-01-01-2015
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+ backup/smbshr@zfs-auto-snap_frequent-2021-01-01-2030
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+ backup/smbshr@zfs-auto-snap_frequent-2021-01-01-2045
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% zfs destroy wird ausgeführt:
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will destroy backup/smbshr@zfs-auto-snap_frequent-2020-12-21-2130
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will reclaim 0B
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will destroy backup/smbshr@zfs-auto-snap_frequent-2020-12-21-2145
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will reclaim 0B
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% Liste nach zfs destroy:
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+ backup/smbshr@zfs-auto-snap_frequent-2020-12-28-1145
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+ backup/smbshr@zfs-auto-snap_frequent-2020-12-28-1200
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+ backup/smbshr@zfs-auto-snap_frequent-2021-01-01-2000
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+ backup/smbshr@zfs-auto-snap_frequent-2021-01-01-2015
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+ backup/smbshr@zfs-auto-snap_frequent-2021-01-01-2030
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+ backup/smbshr@zfs-auto-snap_frequent-2021-01-01-2045
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root@zfsrasp:~#
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```
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