Pillar Axiom: poor NAS performances and slow mount of NFS shares

Asset ID:	1-72-1519019.1
Update Date:	2014-12-12
Keywords:

Solution Type Problem Resolution Sure

Solution 1519019.1 : Pillar Axiom: poor NAS performances and slow mount of NFS shares

Applies to:

Pillar Axiom 600 Storage System - Version Not Applicable to Not Applicable [Release N/A]
Pillar Axiom 300 Storage System - Version Not Applicable to Not Applicable [Release N/A]
Pillar Axiom 500 Storage System - Version Not Applicable to Not Applicable [Release N/A]
Information in this document applies to any platform.

Symptoms

When filesystems mounted from CU1 performance is VERY POOR. When the same filesystem is mount via CU0 performance is normal.
CU0 is not the owner of the file system in question.

Cause

It is unclear if DNS changes have been performed in the customer environment but the debug logs showed DNS resolve issues

Solution

For this particular case when mounting NFS shares using the FQDN (Fully Qualified Domain Names) resolved the performance issue.

mount My_NAS_CU_NAME.mydomain:/nfs_share /mountpoint

instead of

mount My_NAS_CU_NAME:/nfs_share /mountpoint

References

<BUG:15891591> - FUJITSU TELECOM ||NFS PERFORMANCE VERY POOR ON CU1 [2009000B0804256A]
<BUG:15908205> - FUJITSU || CANNOT MOUNT FILESYSTEM WHEN HOSTNAME IS USED IN THE ACCESS LIST

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