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SnapMirror Cloud Restore causes system disruption

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Applies to

  • ONTAP 9.10 and earlier
  • SnapMirror Cloud Restore

Issue

  • Node panics following a SnapMirror Cloud Restore operation

Wed Jun 01 08:03:24 +0000 [cluster-01: scan_c2c_restore_wkr: wafl.scan.start:debug]: Starting volume c2c restore on volume vol1@vserver:aab9d4d3-d713-11ec-83c4-d039ea36023c.
Wed Jun 01 08:03:26 +0000 [cluster-01: wafl_exempt22: wafl.raid.incons.buf:error]: WAFL inconsistent: bad block at VBN 0 (vvbn:0 fbn:0 level:1) in public inode (fileid:4391141 snapid:0 fixable:1 file_type:1 disk_flags:0x0 error:119 raid_set:1) in volume vol1@vserver:aab9d4d3-d713-11ec-83c4-d039ea36023c.
Wed Jun 01 08:03:26 +0000 [cluster-01: wafl_exempt22: sk.panic:alert]: Panic String: Unrecoverable metadata block (file 4391141, block 0, fbn 0, level 1, file type 1) in volume vol1@vserver:aab9d4d3-d713-11ec-83c4-d039ea36023c. WAFL inconsistent. Contact NetApp technical support. in SK process wafl_exempt22 on release 9.10.0P1 (C)

  • Restore may complete successfully, but restored volume is corrupted
Wed Nov 09 11:45:25 -0800 [cluster-01: scan_c2c_restore_wkr: wafl.scan.start:debug]: Starting volume c2c restore on 
vol1@vserver:aab9d4d3-d713-11ec-83c4-d039ea36023c.
Wed Nov 09 11:45:36 -0800 [cluster-01: wafl_exempt16: wafl.raid.incons.userdata:error]: WAFL inconsistent: inconsistent user 
data block at VBN 95661051658724 (vvbn:281474976710653 fbn:0 level:0) in public inode (fileid:1931 snapid:0 file_type:1 
disk_flags:0x0 error:120 raid_set:1) in volume vol1@vserver:aab9d4d3-d713-11ec-83c4-d039ea36023c.
Wed Nov 09 11:45:36 -0800 [cluster-01: wafl_exempt16: wafl.incons.userdata.vol:alert]: WAFL inconsistent: volume 
vol1@vserver:aab9d4d3-d713-11ec-83c4-d039ea36023c has an inconsistent user data block. Note: Any new Snapshot copies might 
contain this inconsistency.

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