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Snapshots manually created are auto deleted with autodelete false

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Category:
ontap-9
Specialty:
core
Last Updated:

Applies to

ONTAP 9

Issue

  • Manual snapshots missing
  • Snapshots were auto-deleted to free up space
  • Output of snap list after snapshot creation:

CLUSTER::> snap list -vol vol1
                                                                 ---Blocks---
Vserver  Volume   Snapshot                                  Size Total% Used%
-------- -------- ------------------------------------- -------- ------ -----
SVM_1    vol1
                  3hour.2022-08-06_0805                  74.69GB     4%    9%
                  3hour.2022-08-06_1105                  23.50GB     1%    3%
                  Manual_DR_1                               120KB     0%    0%
                  Manual_DR_2                               104KB     0%    0%
4 entries were displayed.

  • EMS logs indicate they were automatically deleted due to an out of space condition:

Sat Aug 06 12:38:15 IST [CLUSTER-02: wafl_spcd_main: monitor.volume.full:debug]: Volume vol1@vserver:898ddad3-0373-11e7-91cb-00a098ac7a64 is full (using or reserving 98% of space and 0% of inodes).
Sat Aug 06 12:38:17 IST [CLUSTER-02: snap_helper: wafl.volume.snap.autoDelete:info]: Deleting Snapshot copy '3hour.2022-08-06_0805' in volume 'vol1@vserver:898ddad3-0373-11e7-91cb-00a098ac7a64' to recover storage.
Sat Aug 06 12:38:20 IST [CLUSTER-02: wafl_spcd_main: monitor.volume.nearlyFull:alert]: Volume vol1@vserver:898ddad3-0373-11e7-91cb-00a098ac7a64 is nearly full (using or reserving 97%% of space and 0%% of inodes).
Sat Aug 06 12:38:29 IST [CLUSTER-02: wafl_spcd_main: monitor.volumes.one.ok:debug]: Volume vol1@vserver:898ddad3-0373-11e7-91cb-00a098ac7a64 is OK.
Sat Aug 06 12:38:36 IST [CLUSTER-02: snap_helper: wafl.volume.snap.autoDelete:info]: Deleting Snapshot copy '3hour.2022-08-06_1105' in volume 'vol1@vserver:898ddad3-0373-11e7-91cb-00a098ac7a64' to recover storage.
Sat Aug 06 12:38:54 IST [CLUSTER-02: snap_helper: wafl.volume.snap.autoDelete:info]: Deleting Snapshot copy 'Manual_DR_1' in volume 'vol1@vserver:898ddad3-0373-11e7-91cb-00a098ac7a64' to recover storage.
Sat Aug 06 12:39:08 IST [CLUSTER-02: snap_helper: wafl.volume.snap.autoDelete:info]: Deleting Snapshot copy 'Manual_DR_2' in volume 'vol1@vserver:898ddad3-0373-11e7-91cb-00a098ac7a64' to recover storage.

  • Snapshot settings indicate autodelete is false:

::> volume snapshot autodelete show

Vserver Name: SVM_1
Volume Name: vol1
Enabled: false
Commitment: try
Defer Delete: user_created
Delete Order: oldest_first
Defer Delete Prefix: (not specified)

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