Pruning doesn't work

D

docent

Renowned Member
Jul 23, 2009
96
1
73
Hello,
I don't understand how pruning is working.
Today is the first Monday in August, but as of 03/31/2024 the backup copy has not been deleted.
Why?
2024-08-05T00:00:00+05:00: prune job 'default-PVE01Backup-6c1d041d-a53'
2024-08-05T00:00:00+05:00: task triggered by schedule 'daily'
2024-08-05T00:00:00+05:00: Starting datastore prune on datastore 'PVE01Backup', root namespace, down to full depth
2024-08-05T00:00:00+05:00: retention options: --keep-last 7 --keep-daily 14 --keep-weekly 4 --keep-monthly 3
2024-08-05T00:00:00+05:00: Pruning group :"vm/100"
2024-08-05T00:00:00+05:00: keep vm/100/2024-03-31T16:00:00Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-04-28T17:00:00Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-05-26T17:00:01Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-06-16T17:00:04Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-06-23T17:00:03Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-06-30T17:00:04Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-07T17:00:03Z
2024-08-05T00:00:00+05:00: remove vm/100/2024-07-10T17:00:00Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-11T17:00:03Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-16T17:00:01Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-17T17:00:03Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-18T17:00:00Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-19T17:00:04Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-20T17:00:01Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-21T17:00:01Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-22T17:00:04Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-23T17:00:03Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-24T17:00:03Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-25T17:00:02Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-26T17:00:04Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-27T17:00:01Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-28T17:00:02Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-29T17:00:06Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-30T17:00:01Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-31T17:00:03Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-08-01T17:00:04Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-08-02T17:00:05Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-08-03T17:00:02Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-08-04T17:00:04Z
2024-08-05T00:00:00+05:00: TASK OK

Best regards,
Michael
 
see https://pbs.proxmox.com/docs/backup-client.html#backup-pruning and https://pbs.proxmox.com/docs/prune-simulator/index.html for details, but it does the right thing:

you specified keep-last 7 which are the following:
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-29T17:00:06Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-30T17:00:01Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-31T17:00:03Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-08-01T17:00:04Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-08-02T17:00:05Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-08-03T17:00:02Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-08-04T17:00:04Z
Click to expand...

keep daily 14:

2024-08-05T00:00:00+05:00: keep vm/100/2024-07-11T17:00:03Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-16T17:00:01Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-17T17:00:03Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-18T17:00:00Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-19T17:00:04Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-20T17:00:01Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-21T17:00:01Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-22T17:00:04Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-23T17:00:03Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-24T17:00:03Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-25T17:00:02Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-26T17:00:04Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-27T17:00:01Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-28T17:00:02Z
Click to expand...

then one is removed
2024-08-05T00:00:00+05:00: remove vm/100/2024-07-10T17:00:00Z
Click to expand...

then keep weekly 4

2024-08-05T00:00:00+05:00: keep vm/100/2024-06-16T17:00:04Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-06-23T17:00:03Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-06-30T17:00:04Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-07-07T17:00:03Z
Click to expand...

and then keep monthly 3

2024-08-05T00:00:00+05:00: keep vm/100/2024-03-31T16:00:00Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-04-28T17:00:00Z
2024-08-05T00:00:00+05:00: keep vm/100/2024-05-26T17:00:01Z
Click to expand...

basically each 'keep-x' is a number slots to be filled, and it's not about the calendar days/months/etc.
 
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Thanks)
I thought all options were counted from the current time, like in Veeam B&R.
 
Hello,


Please, could someone help me understand the concept of Proxmox Backup Server´s prune?
The backup is scheduled to run daily at 00:05 and the prune at 03:00.
I would like to keep 14 daily backups, 8 weekly backups, 6 monthly backups and one yearly backup.
PBS has a schedule to run prune daily at 03:00, with the following retention configuration: keep-last: 2, keep-daily: 14, keep-weekly: 8, keep-monthly: 6, keep-yearly: 1
Prune never keeps weekly, monthly or yearly backups, only the last and daily backups.
I would like to better understand how to achieve this.

Thank you very much.

2024-09-30T03:00:00-03:00: prune job 's-ad570651-be4b'
2024-09-30T03:00:00-03:00: task triggered by schedule '03:00'
2024-09-30T03:00:00-03:00: Starting datastore prune on datastore 'zpool', root namespace, down to full depth
2024-09-30T03:00:00-03:00: retention options: --keep-last 2 --keep-daily 14 --keep-weekly 8 --keep-monthly 6 --keep-yearly 1
2024-09-30T03:00:00-03:00: Pruning group Matriz:"vm/401"
2024-09-30T03:00:00-03:00: remove vm/401/2024-09-13T05:00:03Z
2024-09-30T03:00:00-03:00: remove vm/401/2024-09-14T05:00:09Z
2024-09-30T03:00:00-03:00: keep vm/401/2024-09-15T05:00:00Z
2024-09-30T03:00:00-03:00: keep vm/401/2024-09-16T05:00:07Z
2024-09-30T03:00:00-03:00: keep vm/401/2024-09-17T05:00:01Z
2024-09-30T03:00:00-03:00: keep vm/401/2024-09-18T05:00:05Z
2024-09-30T03:00:00-03:00: keep vm/401/2024-09-19T04:30:06Z
2024-09-30T03:00:00-03:00: keep vm/401/2024-09-20T04:30:04Z
2024-09-30T03:00:00-03:00: keep vm/401/2024-09-21T04:30:11Z
2024-09-30T03:00:00-03:00: keep vm/401/2024-09-22T04:30:03Z
2024-09-30T03:00:00-03:00: keep vm/401/2024-09-23T04:30:05Z
2024-09-30T03:00:00-03:00: keep vm/401/2024-09-24T04:30:01Z
2024-09-30T03:00:00-03:00: keep vm/401/2024-09-25T04:30:03Z
2024-09-30T03:00:00-03:00: keep vm/401/2024-09-26T04:30:15Z
2024-09-30T03:00:00-03:00: keep vm/401/2024-09-27T04:30:09Z
2024-09-30T03:00:00-03:00: remove vm/401/2024-09-28T04:30:12Z
2024-09-30T03:00:00-03:00: keep vm/401/2024-09-28T18:40:15Z
2024-09-30T03:00:00-03:00: keep vm/401/2024-09-29T03:05:02Z
2024-09-30T03:00:00-03:00: keep vm/401/2024-09-30T03:05:07Z
2024-09-30T03:00:00-03:00: Pruning group Matriz:"vm/104"
2024-09-30T03:00:00-03:00: remove vm/104/2024-09-14T03:00:14Z
2024-09-30T03:00:00-03:00: keep vm/104/2024-09-15T03:00:15Z
2024-09-30T03:00:00-03:00: keep vm/104/2024-09-16T03:00:25Z
2024-09-30T03:00:00-03:00: keep vm/104/2024-09-17T03:00:16Z
2024-09-30T03:00:00-03:00: keep vm/104/2024-09-18T03:00:22Z
2024-09-30T03:00:00-03:00: keep vm/104/2024-09-19T03:00:17Z
2024-09-30T03:00:00-03:00: keep vm/104/2024-09-20T03:00:17Z
2024-09-30T03:00:00-03:00: keep vm/104/2024-09-21T03:00:13Z
2024-09-30T03:00:00-03:00: keep vm/104/2024-09-22T03:00:18Z
2024-09-30T03:00:00-03:00: keep vm/104/2024-09-23T03:00:21Z
2024-09-30T03:00:00-03:00: keep vm/104/2024-09-24T03:00:20Z
2024-09-30T03:00:00-03:00: keep vm/104/2024-09-25T03:00:22Z
2024-09-30T03:00:00-03:00: keep vm/104/2024-09-26T03:00:20Z
2024-09-30T03:00:00-03:00: keep vm/104/2024-09-27T03:00:25Z
2024-09-30T03:00:00-03:00: remove vm/104/2024-09-28T03:00:18Z
2024-09-30T03:00:00-03:00: remove vm/104/2024-09-28T19:27:10Z
2024-09-30T03:00:00-03:00: keep vm/104/2024-09-28T19:37:45Z
2024-09-30T03:00:00-03:00: keep vm/104/2024-09-29T03:06:23Z
2024-09-30T03:00:00-03:00: keep vm/104/2024-09-30T03:07:24Z
2024-09-30T03:00:00-03:00: Pruning group Matriz:"vm/300"
2024-09-30T03:00:00-03:00: remove vm/300/2024-09-13T05:31:28Z
2024-09-30T03:00:00-03:00: remove vm/300/2024-09-14T05:31:22Z
2024-09-30T03:00:00-03:00: keep vm/300/2024-09-15T05:31:12Z
2024-09-30T03:00:00-03:00: keep vm/300/2024-09-16T05:31:24Z
2024-09-30T03:00:00-03:00: keep vm/300/2024-09-17T05:31:26Z
2024-09-30T03:00:00-03:00: keep vm/300/2024-09-18T05:31:53Z
2024-09-30T03:00:00-03:00: keep vm/300/2024-09-19T05:31:33Z
2024-09-30T03:00:00-03:00: keep vm/300/2024-09-20T05:31:32Z
2024-09-30T03:00:00-03:00: keep vm/300/2024-09-21T05:31:18Z
2024-09-30T03:00:00-03:00: keep vm/300/2024-09-22T05:31:29Z
2024-09-30T03:00:00-03:00: keep vm/300/2024-09-23T05:31:17Z
2024-09-30T03:00:00-03:00: keep vm/300/2024-09-24T05:31:38Z
2024-09-30T03:00:00-03:00: keep vm/300/2024-09-25T05:31:36Z
2024-09-30T03:00:00-03:00: keep vm/300/2024-09-26T05:31:22Z
2024-09-30T03:00:00-03:00: keep vm/300/2024-09-27T05:31:26Z
2024-09-30T03:00:00-03:00: keep vm/300/2024-09-28T05:31:27Z
2024-09-30T03:00:00-03:00: keep vm/300/2024-09-29T05:31:23Z
2024-09-30T03:00:00-03:00: keep vm/300/2024-09-30T05:31:28Z
.....
 
Use prune simulator to find out why or why not a snapshot is kept [1]. Except for the last parameter, which keeps that many snapshots no matter when they were taken, PBS will keep the last backup of each period:

--keep-daily -> the last backup of each day -> that started nearer to 23:59:59.
--keep-weekly -> the last backup of the week -> that started nearer to 23:59:59 of a Sunday.
--keep-monthly -> the last backup of the month -> that started nearer to 23:59:59 of the last day of the month.
--keep-yearly -> the last backup of the year -> that started nearer to 23:59:59 of December 31.

You just have to wait a couple more weeks to see clearer how you retention policy is properly being applied.

[1] https://pbs.proxmox.com/docs/prune-simulator/index.html
 
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