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CommVault Simpana or SnapProtect pruning issues with snapshots vaulted to desination volumes with storage efficiency enabled

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snapprotect
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dp
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Applies to

  • SnapProtect/CommVault Simpana - All Versions up to and including Version 11 SP8
  • OnTap/Clustered Data OnTap - All Versions
  • Veeam Backups and Replication
  • Troubleshooting

Issue

The "Rotation Phase" of a SnapVault (XDP) transfer to destination where deduplication is enabled, CommVault Simpana/SnapProtect may incorrectly catalog the data with temporary "SnapMirrorSE*" names. As a resolt SImpana/SnapProtect is unable to locate these snapshots to perform operations including tape backups, restores, cascaded replication, scheduled indexing, and pruning.

SnapProtect/Simpana fails to prune, backup to tape, further replicate (cascade) snapshots on Vault (XDP) destinations where deduplication is enabled.
CommVault Media Agent Logs (CVMA.*) reveal an attempt to delete snapshot  with long names beginning with the string "snapmirrorSE":

17160 380c  10/18 12:02:20 ------ GetDFMInfoFromSnap_II SM_MDT_COPY_UUID : [myvserver|CC_myserver_SP_6_Copy_14_mydestination|snapmirrorSE.xxxxxxxx-xx-xxxx-xxxx-xxxxxxxxxxxx.SP_2_230959_33446_1474136996|/myvserver/CC_myserver_SP_6_Copy_14_mydestination/myvolume/myvolume.lun]
17160 380c  10/18 12:02:20 ------ Snapshot UniqueID is
[myvserver.demhm.corpintra.net|CC_myserver_SP_6_Copy_14_mydestination|snapmirrorSE.xxxxxxxx-xx-xxxx-xxxx-xxxxxxxxxxxx.SP_2_230959_33446_1474136996|/myvserver/CC_myserver_SP_6_Copy_14_mydestination/myvolume/myvolume.lun]
17160 380c  10/18 12:02:20 ------ CVSnapEngineNetApp::cvso_deleteSnaps DFM SnapShot on secondary copy. Secondary volume name [CC_myserver_SP_6_Copy_14_mydestination] Secondary snap name [snapmirrorSE.xxxxxxxx-xx-xxxx-xxxx-xxxxxxxxxxxx.SP_2_230959_33446_1474136996] Secondary filer name [mydestination]
17160 380c  10/18 12:02:44 ###### ManageONTAPDFMCMode::DFMGetResourceKeyForObject() - Failed to get resource key for object:[myvserver:/CC_myserver_SP_6_Copy_14_mydestination:snapmirrorSE.xxxxxxxx-xx-xxxx-xxxx-xxxxxxxxxxxx.SP_2_230959_33446_1474136996]. OnCommand Server:[myocumserver]. Error returned:[22255][No resource 'snapmirrorSE.xxxxxxxx-xx-xxxx-xxxx-xxxxxxxxxxxx.SP_2_230959_33446_1474136996' of type 'snapshot' was found in volume 'myvserver:/CC_myserver_SP_6_Copy_14_mydestination'.]
17160 380c  10/18 12:02:44 ###### ManageONTAPDFMCMode::DFMGetResourceKeyForObject() - Failed to get resource key for object:[myvserver:/CC_myserver_SP_6_Copy_14_mydestination:snapmirrorSE.xxxxxxxx-xx-xxxx-xxxx-xxxxxxxxxxxx.SP_2_230959_33446_1474136996]. OnCommand Server:[myocumserver]. Error returned:[22255][No resource 'snapmirrorSE.xxxxxxxx-xx-xxxx-xxxx-xxxxxxxxxxxx.SP_2_230959_33446_1474136996' of type 'snapshot' was found in volume 'myvserver:/CC_myserver_SP_6_Copy_14_mydestination'.]
17160 380c  10/18 12:02:44 ------ ManageONTAPDFMCMode::DFMDeleteSnapshot2 Snapshot[myvserver:/CC_myserver_SP_6_Copy_14_mydestination:snapmirrorSE.xxxxxxxx-xx-xxxx-xxxx-xxxxxxxxxxxx.SP_2_230959_33446_1474136996] not found by OnCommand server.
17160 380c  10/18 12:02:49 ------ DeleteDFMSnaps +++++++++ Successfully marked snap:[snapmirrorSE.xxxxxxxx-xx-xxxx-xxxx-xxxxxxxxxxxx.SP_2_230959_33446_1474136996] for deletion+++++++++​

On the Filer Side, the failed snapshot deletion attempt is observed in the MGWD logs on the Vault destination:

00000011.00167535 10d6d1d0 Tue Oct 18 2016 14:01:34 +00:00 [kern_mgwd:info:1010] 0x83294e340: 8103e9000007cf5d: ERR: tables:snapshot: dblade_get_single_snapshot:: Getting info for a snapshot "snapmirrorSE.xxxxxxxx-xx-xxxx-xxxx-xxxxxxxxxxxx.SP_2_230959_33446_14200654240174136996" failed on volume "CC_myserver_SP_6_Copy_14_mydestination" error: 13021:"The snapshot name does not exist"

Same issue can be found with Veeam backup:

Wed Jul 24 2019 14:21:14 +02:00 [kern_audit:info:1944] 8503e80000f648e6 :: D2-S-CSTOR1:ontapi :: 10.10.10.10:56943 :: D2-DR-NFS:d2-veeam :: snapmirrorPreSE.VeeamSourceSnapshot_D1_NFS_PA01.2019-07-24_1420VeeamSnapVault_D1_NFS_PA01.2019-07-24_1420D1_SVM_NFS_D1_NFS_PA01_mirror_vault^M :: Pending

Wed Jul 24 2019 14:21:14 +02:00 [kern_audit:info:1944] 8503e80000f648e6 :: D2-S-CSTOR1:ontapi :: 10.10.10.10:56943 :: D2-DR-NFS:d2-veeam :: entry doesn't exist :: ONTAPI :: Error

 

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