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Level-0 RAID resync restarts unexpectedly

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Category:
metrocluster
Specialty:
metrocluster
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Applies to

  • MetroCluster FC 
  • NetApp SyncMirror
  • adding more disks to the system while Level-0 resync was in progress
  • modifying raid.resync.num_concurrent_ios_per_rg option

Issue

Level-0 RAID resync restarts unexpectedly after reporting it completed:

Example:

[raid.rg.resync.info:info]: /aggr1/plex1/rg0: nreadio:154815466 nwriteio:21797914 nparity_blocks_read:690537331 nblocks_copied:-1189186122 resync_progress:99
[raid.rg.resync.done:notice]: /aggr1/plex1/rg0: resynchronization completed in 175:19:45.57
[raid.rg.normal:notice]: raid group /aggr1/plex1/rg0 is in normal state.
[raid.rg.resync.start:notice]: /aggr1/plex1/rg0: start resynchronization (level 0)

 

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