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NetApp Stage KB

NFS misaligned I/O observed from Kubernetes persistent volume

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1
Visibility:
Public
Votes:
0
Category:
fas-systems
Specialty:
NAS
Last Updated:

Applies to

  • Kubernetes cluster
  • Trident

Issue

NFS misaligned I/O observed from Kubernetes persistent volume.
 
Example:
 
volume:k8s_volume:nfs_write_data:97970b/s
volume:k8s_volume:nfs_write_latency:71.71us
volume:k8s_volume:nfs_protocol_write_histo.< 4KB:2778
volume:k8s_volume:nfs_protocol_write_histo.= 4KB:3962
volume:k8s_volume:nfs_protocol_write_histo.< 8KB:60
volume:k8s_volume:nfs_protocol_write_histo.= 8KB:1016
volume:k8s_volume:nfs_protocol_write_histo.< 16KB:283
volume:k8s_volume:nfs_protocol_write_histo.= 16KB:105
volume:k8s_volume:nfs_protocol_write_histo.< 32KB:20
volume:k8s_volume:nfs_protocol_write_histo.= 32KB:0
volume:k8s_volume:nfs_protocol_write_histo.< 64KB:0
volume:k8s_volume:nfs_protocol_write_histo.= 64KB:0
volume:k8s_volume:nfs_protocol_write_histo.< 256KB:0
volume:k8s_volume:nfs_protocol_write_histo.= 256KB:0
volume:k8s_volume:nfs_protocol_write_histo.< 1024KB:0
volume:k8s_volume:nfs_protocol_write_histo.= 1024KB:0
volume:k8s_volume:nfs_protocol_write_histo.> 1024KB:0
volume:k8s_volume:nfs_protocol_misaligned_writes.misaligned 4KB:4096
volume:k8s_volume:nfs_protocol_misaligned_writes.misaligned 8KB:4481024
volume:k8s_volume:nfs_protocol_misaligned_writes.misaligned 16KB:1294336
volume:k8s_volume:nfs_protocol_misaligned_writes.misaligned 32KB:0
volume:k8s_volume:nfs_protocol_misaligned_writes.misaligned REST:44928

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