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Status Future consideration
Workspace Storage Scale (formerly known as GPFS)
Created by Guest
Created on Nov 7, 2024

RELATED IDEAS

Recover failed Ganesha node - which mark with F flag, without reboot.

See this idea on ideas.ibm.com

Hi

We had NFS Ganesha node that failed - but we did not able to recover it , only reboot solve it.


Sysmon attempted to remove the F flag three times, but all attempts to acquire the lock failed.
As a result, the node remained in a failed state despite being healthy.
Restarting the node allowed the process to retry successfully once the lock became available.

NFS failure: RPC null checks and the stat checks (collects IO number 2 times and if its the same, the test fails) both failed. thats why nfs_not_active. This was fixed soon.
why node stayed in failed state even NFS was healthy: But to remove Failed state we need a fail-over lock and we didn't get it, it tries 3 times. Later when the lock was available, we had already exhausted our tries. And this is working as designed. But ideally we may want to redesign this.

Idea priority Medium
  • Guest
    Reply
    |     Feb 24, 2025

    Hi

     

    CAn we add to mmhealth monitor the following errors in ganesha.log file (or all CRIT messages to be monitor):

     

    2025-01-26 12:20:48 : epoch 001c0612 : ess4-proto6 : gpfs.ganesha.nfsd-2163267[svc_4386] fsal_find_fd :FSAL :CRIT :Open for locking failed for access Read/Write

    2025-01-26 12:20:48 : epoch 001c0612 : ess4-proto6 : gpfs.ganesha.nfsd-2163267[svc_2687] fsal_find_fd :FSAL :CRIT :Open for locking failed for access Read/Write

    2025-01-26 12:20:48 : epoch 001c0612 : ess4-proto6 : gpfs.ganesha.nfsd-2163267[svc_4005] fsal_find_fd :FSAL :CRIT :Open for locking failed for access Read/Write

    2025-01-26 12:20:49 : epoch 001c0612 : ess4-proto6 : gpfs.ganesha.nfsd-2163267[svc_4612] fsal_find_fd :FSAL :CRIT :Open for locking failed for access Read/Write

     

    2025-01-26 16:07:25 : epoch 0010060f : ess4-proto2 : gpfs.ganesha.nfsd-2657517[svc_749] mdcache_lru_fds_available :INODE LRU :CRIT :FD Hard Limit (943718) Exceeded (open_fd_count = 943719), waking LRU thread.

    2025-01-26 16:07:25 : epoch 0010060f : ess4-proto2 : gpfs.ganesha.nfsd-2657517[svc_989] mdcache_lru_fds_available :INODE LRU :CRIT :FD Hard Limit (943718) Exceeded (open_fd_count = 943723), waking LRU thread.

    2025-01-26 16:07:25 : epoch 0010060f : ess4-proto2 : gpfs.ganesha.nfsd-2657517[svc_752] mdcache_lru_fds_available :INODE LRU :CRIT :FD Hard Limit (943718) Exceeded (open_fd_count = 943723), waking LRU thread.

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