# Large PITR chunk **URL:** \ **Category:** Percona Backup for MongoDB\ **Created:** [November 9, 2021, 8:45am UTC](https://forums.percona.com/t/large-pitr-chunk/12913 "2021-11-09T08:45:59Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![redirect](https://avatars.discourse-cdn.com/v4/letter/r/cc9497/32.png) [@redirect](https://forums.percona.com/u/redirect)\ **Post date:** [November 9, 2021, 8:45am UTC](https://forums.percona.com/t/large-pitr-chunk/12913/1 "2021-11-09T08:45:59Z")
Hello everyone! I’m trying to understand why I have several full database backups, but only 1 large PITR chunk, documentation from percona website contains a example listing ```auto pbm list 2021-08-04T13: 00: 58Z [complete: 2021-08-04T13: 01: 23] 2021-08-05T13: 00: 47Z [complete: 2021-08-05T13: 01: 11] 2021-08-06T08: 02: 44Z [complete: 2021-08-06T08: 03: 09] 2021-08-06T08: 03: 43Z [complete: 2021-08-06T08: 04: 08] 2021-08-06T08: 18: 17Z [complete: 2021-08-06T08: 18: 41] PITR : 2021-08-04T13: 01: 24 - 2021-08-05T13: 00: 11 2021-08-06T08: 03: 10 - 2021-08-06T08: 18: 29 2021-08-06T08: 18: 42 - 2021-08-06T08: 33: 09 ``` where full backup named 2021-08-04T13: 00: 58Z are use as a base backup for chunk 2021-08-04T13: 01: 24 - 2021-08-05T13: 00: 11 and backup 2021-08-06T08: 02: 44Z are use as a base backup for chunk 2021-08-06T08: 03: 10 - 2021-08-06T08: 18: 29 etc… but in my case i have 3 full backups ( which executed once a week ) ```auto pbm status Cluster: prod-bishkek: - prod-bishkek/10.0.4.3:27017: pbm-agent v1.6.0 OK - prod-bishkek/10.0.5.12:27017: pbm-agent v1.6.0 OK - prod-bishkek/192.168.5.43::27017: pbm-agent v1.6.0 OK PITR incremental backup: ======================== Status [ON] Currently running: ================== (none) Backups: FS /opt/mongodb-backup Snapshots: 2021-11-06T18:00:01Z 101.63GB [complete: 2021-11-06T18:09:39] 2021-11-02T09:15:20Z 66.98GB [complete: 2021-11-02T09:21:34] 2021-10-25T09:56:48Z 7.67GB [complete: 2021-10-25T09:57:44] PITR chunks [114.59GB]: 2021-10-25T09:57:45 - 2021-11-09T08:39:55 ``` and why i get 1 large PITR chunk? i’ve set pitr.oplogSpanMin=30 ---
**Author:** ![redirect](https://avatars.discourse-cdn.com/v4/letter/r/cc9497/32.png) [@redirect](https://forums.percona.com/u/redirect)\ **Post date:** [November 16, 2021, 6:17am UTC](https://forums.percona.com/t/large-pitr-chunk/12913/2 "2021-11-16T06:17:03Z")
any suggestions guys? ---
**Author:** ![Nguy\_n\_Xuan\_H\_i](https://avatars.discourse-cdn.com/v4/letter/n/85f322/32.png) [@Nguy\_n\_Xuan\_H\_i](https://forums.percona.com/u/Nguy_n_Xuan_H_i)\ **Post date:** [November 16, 2021, 7:55am UTC](https://forums.percona.com/t/large-pitr-chunk/12913/3 "2021-11-16T07:55:19Z")
I was wondering the same thing. It’s not a big chunk, if you look at the backup file then you will see multiple chunks and you can delete individual chunk. It’s just shown like that when you list it. ---
**Author:** ![redirect](https://avatars.discourse-cdn.com/v4/letter/r/cc9497/32.png) [@redirect](https://forums.percona.com/u/redirect)\ **Post date:** [November 16, 2021, 10:28am UTC](https://forums.percona.com/t/large-pitr-chunk/12913/4 "2021-11-16T10:28:25Z")
Yeah, but i want to have list like in docs 😉 ---
**Author:** ![Julien\_Rasneur](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/julien_rasneur/32/6892_2.png) [@Julien\_Rasneur](https://forums.percona.com/u/Julien_Rasneur)\ **Post date:** [August 30, 2022, 9:44am UTC](https://forums.percona.com/t/large-pitr-chunk/12913/5 "2022-08-30T09:44:20Z")
Hello, I have the same problem. Have you find a solution ? > # pbm list > > Backup snapshots: > 2022-07-05T10:10:11Z [complete: 2022-07-05T10:17:45Z] > 2022-07-31T19:00:30Z [complete: 2022-07-31T19:15:27Z] > 2022-08-07T19:00:27Z [complete: 2022-08-07T19:14:25Z] > 2022-08-14T19:00:33Z [complete: 2022-08-14T19:16:01Z] > 2022-08-21T19:00:39Z [complete: 2022-08-21T19:13:57Z] > 2022-08-28T19:00:18Z [complete: 2022-08-28T19:15:28Z] > > PITR : > 2022-07-05T10:17:46Z - 2022-08-30T09:05:29Z Then i can’t delete old backup. I get the error message : > # pbm delete-backup 2022-07-05T10:10:11Z > > Are you sure you want delete backup(s)? [y/N] y > Waiting for delete to be done …Error: deleting: unable to delete: backup is a base for ‘2022-07-05T10:17:45 - 2022-08-30T09:15:32’ ---
**Author:** ![Dmytro\_Zghoba](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/dmytro_zghoba/32/4721_2.png) [@Dmytro\_Zghoba](https://forums.percona.com/u/Dmytro_Zghoba)\ **Post date:** [September 9, 2022, 10:17am UTC](https://forums.percona.com/t/large-pitr-chunk/12913/6 "2022-09-09T10:17:15Z")
Hi @Julien_Rasneur it’s a known issue. you can track the status of the fix here [[PBM-850] Add ability to delete older backups - Percona JIRA](https://jira.percona.com/browse/PBM-850) for now, you can try to delete the PITR range first and then the backup. ```auto $> pbm delete-pitr --older-then="2022-07-31T19:15:27" $> pbm delete-backup "2022-07-05T10:10:11Z" ``` ---
**Author:** ![Dmytro\_Zghoba](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/dmytro_zghoba/32/4721_2.png) [@Dmytro\_Zghoba](https://forums.percona.com/u/Dmytro_Zghoba)\ **Post date:** [September 9, 2022, 10:25am UTC](https://forums.percona.com/t/large-pitr-chunk/12913/7 "2022-09-09T10:25:31Z")
about the initial question raised here: `pbm status` and `pbm list` commands show PITR time ranges that are continuous (without any gaps/missed oplog records). if there is more than one range, then there are gaps between them. > and why i get 1 large PITR chunk? > i’ve set pitr.oplogSpanMin=30 the PITR time range is not a single file but many (one by one) smaller chunks/ranges. so there should be many chunks roughly 30mins each