As I mentioned, I’ve never had such a case.Give it a try in a test environment and if it works - go ahead. Best Regards,Strahil Nikolov
On Wednesday, August 16, 2023, 1:21 PM, Sebastian Neustein <[email protected]> wrote: Strahil Nikolov: I’ve never had such situation and I don’t recall someone sharing something similar. That's strange, it is really easy to reproduce. This is from a fresh test environment: summary: - There is one snapshot present. - On one node glusterd is stopped. - During the stop, one snapshot is deleted. - The node is brought up again - On that node there is an orphaned snapshot detailed version: # on node 1: root@gl1:~# cat /etc/debian_version 11.7 root@gl1:~# gluster --version glusterfs 10.4 root@gl1:~# gluster volume info Volume Name: glvol_samba Type: Replicate Volume ID: 91cb059e-10e4-4439-92ea-001065652749 Status: Started Snapshot Count: 1 Number of Bricks: 1 x 3 = 3 Transport-type: tcp Bricks: Brick1: gl1:/data/glusterfs/glvol_samba/brick0/brick Brick2: gl2:/data/glusterfs/glvol_samba/brick0/brick Brick3: gl3:/data/glusterfs/glvol_samba/brick0/brick Options Reconfigured: cluster.granular-entry-heal: on storage.fips-mode-rchecksum: on transport.address-family: inet nfs.disable: on performance.client-io-threads: off features.barrier: disable root@gl1:~# gluster snapshot list snaps_GMT-2023.08.15-13.05.28 # on node 3: root@gl3:~# systemctl stop glusterd.service # on node 1: root@gl1:~# gluster snapshot deactivate snaps_GMT-2023.08.15-13.05.28 Deactivating snap will make its data inaccessible. Do you want to continue? (y/n) y Snapshot deactivate: snaps_GMT-2023.08.15-13.05.28: Snap deactivated successfully root@gl1:~# gluster snapshot delete snaps_GMT-2023.08.15-13.05.28 Deleting snap will erase all the information about the snap. Do you still want to continue? (y/n) y snapshot delete: snaps_GMT-2023.08.15-13.05.28: snap removed successfully root@gl1:~# gluster snapshot list No snapshots present # on node 3: root@gl3:~# systemctl start glusterd.service root@gl3:~# gluster snapshot list snaps_GMT-2023.08.15-13.05.28 root@gl3:~# gluster snapshot deactivate snaps_GMT-2023.08.15-13.05.28 Deactivating snap will make its data inaccessible. Do you want to continue? (y/n) y snapshot deactivate: failed: Pre Validation failed on gl1.ad.arc.de. Snapshot (snaps_GMT-2023.08.15-13.05.28) does not exist. Pre Validation failed on gl2. Snapshot (snaps_GMT-2023.08.15-13.05.28) does not exist. Snapshot command failed root@gl3:~# lvs -a LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert 669cbc14fa7542acafb2995666284583_0 vg_brick0 Vwi-aotz-- 15,00g tp_brick0 lv_brick0 0,08 lv_brick0 vg_brick0 Vwi-aotz-- 15,00g tp_brick0 0,08 [lvol0_pmspare] vg_brick0 ewi------- 20,00m tp_brick0 vg_brick0 twi-aotz-- 18,00g 0,12 10,57 [tp_brick0_tdata] vg_brick0 Twi-ao---- 18,00g [tp_brick0_tmeta] vg_brick0 ewi-ao---- 20,00m Would it be dangerous to just delete following items on node 3 while gluster is down: - the orphaned directories in /var/lib/glusterd/snaps/ - the orphaned lvm, here 669cbc14fa7542acafb2995666284583_0 Or is there a self-heal command? Regards Sebastian Am 10.08.2023 um 20:33 schrieb Strahil Nikolov: I’ve never had such situation and I don’t recall someone sharing something similar. Most probably it’s easier to remove the node from the TSP and re-add it. Of course , test the case in VMs just to validate that it’s possible to add a mode to a cluster with snapshots. I have a vague feeling that you will need to delete all snapshots. Best Regards, Strahil Nikolov On Thursday, August 10, 2023, 4:36 AM, Sebastian Neustein <[email protected]> wrote: Hi Due to an outage of one node, after bringing it up again, the node has some orphaned snapshosts, which are already deleted on the other nodes. How can I delete these orphaned snapshots? Trying the normal way produceses these errors: [2023-08-08 19:34:03.667109 +0000] E [MSGID: 106115][glusterd-mgmt.c:118:gd_mgmt_v3_collate_errors] 0-management: Pre Validation failed on B742. Please check log file for details. [2023-08-08 19:34:03.667184 +0000] E [MSGID: 106115][glusterd-mgmt.c:118:gd_mgmt_v3_collate_errors] 0-management: Pre Validation failed on B741. Please check log file for details. [2023-08-08 19:34:03.667210 +0000] E [MSGID: 106121][glusterd-mgmt.c:1083:glusterd_mgmt_v3_pre_validate] 0-management: Pre Validation failed on peers [2023-08-08 19:34:03.667236 +0000] E [MSGID: 106121][glusterd-mgmt.c:2875:glusterd_mgmt_v3_initiate_snap_phases] 0-management: Pre Validation Failed Even worse: I followed read hat gluster snapshot trouble guide and deleted one of those directories defining a snapshot. Now I receive this on the cli: run-gluster-snaps-e4dcd4166538414c849fa91b0b3934d7-brick6-brick[297342]: [2023-08-09 08:59:41.107243 +0000] M [MSGID: 113075] [posix-helpers.c:2161:posix_health_check_thread_proc]0-e4dcd4166538414c849fa91b0b3934d7-posix: health-check failed, going down run-gluster-snaps-e4dcd4166538414c849fa91b0b3934d7-brick6-brick[297342]: [2023-08-09 08:59:41.107243 +0000] M [MSGID: 113075] [posix-helpers.c:2161:posix_health_check_thread_proc]0-e4dcd4166538414c849fa91b0b3934d7-posix: health-check failed, going down run-gluster-snaps-e4dcd4166538414c849fa91b0b3934d7-brick6-brick[297342]: [2023-08-09 08:59:41.107292 +0000] M [MSGID: 113075] [posix-helpers.c:2179:posix_health_check_thread_proc]0-e4dcd4166538414c849fa91b0b3934d7-posix: still alive! -> SIGTERM run-gluster-snaps-e4dcd4166538414c849fa91b0b3934d7-brick6-brick[297342]: [2023-08-09 08:59:41.107292 +0000] M [MSGID: 113075] [posix-helpers.c:2179:posix_health_check_thread_proc]0-e4dcd4166538414c849fa91b0b3934d7-posix: still alive! -> SIGTERM What are my options? - is there an easy way to remove all those snapshots? - or would it be easier to remove and rejoin the node to the gluster cluster? Thank you for any help! Seb -- Sebastian Neustein Airport Research Center GmbH Bismarckstraße 61 52066 Aachen Germany Phone: +49 241 16843-23 Fax: +49 241 16843-19 e-mail: [email protected] Website: http://www.airport-consultants.com Register Court: Amtsgericht Aachen HRB 7313 Ust-Id-No.: DE196450052 Managing Director: Dipl.-Ing. Tom Alexander Heuer ________ Community Meeting Calendar: Schedule - Every 2nd and 4th Tuesday at 14:30 IST / 09:00 UTC Bridge: https://meet.google.com/cpu-eiue-hvk Gluster-users mailing list [email protected] https://lists.gluster.org/mailman/listinfo/gluster-users
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