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High CPU on Snapmirror source node from Deswizzlers

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Specialty:
perf
Last Updated:

Applies to

  • ONTAP 9
  • Clustered ONTAP 8.x
  • ONTAP (7-mode)

Issue

Example: A single deswizzle is running for volume1:

filer> priv set advanced
filer*> wafl scan status
Volume volume1:
 Scan id                   Type of scan     progress
  226328    container block reclamation     block 1871 of 24095 (fbn 11220)
  226329             volume deswizzling     snap 157, inode 2144843 of 2172681. level 1 of normal files. 
  Totals: Normal files: L1:10/4881 L2:0/11336 L3:0/5723 L4:0/0 Inode file: L0:0/0 L1:0/0 L2:0/0 L3:0/0 L4:0/0

 

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