Input/Output Error at General Parallel File System (GPFS)


I was having this error “Input/output error on /usr/local/………….”

I did a mmdiag –waiters on all the NSD Nodes. There are no issues reported.

# mmlsdisk gpfs0
disk         driver   sector failure holds    holds                            storage
name         type       size   group metadata data  status        availability pool
------------ -------- ------ ------- -------- ----- ------------- ------------ ------------
dcs3700A_2   nsd         512    4714 yes      yes   ready         down         system
dcs3700A_3   nsd         512    4715 yes      yes   ready         up           system
dcs3700A_4   nsd         512    4714 yes      yes   ready         down         system
dcs3700A_5   nsd         512    4715 yes      yes   ready         up           system
dcs3700A_6   nsd         512    4714 yes      yes   ready         up           system
dcs3700A_7   nsd         512    4715 yes      yes   ready         up           system
dcs3700B_2   nsd         512    4716 yes      yes   ready         up           system
dcs3700B_3   nsd         512    4717 yes      yes   ready         up           system
dcs3700B_4   nsd         512    4716 yes      yes   ready         up           system
dcs3700B_5   nsd         512    4717 yes      yes   ready         up           system
dcs3700B_6   nsd         512    4716 yes      yes   ready         up           system
dcs3700B_7   nsd         512    4717 yes      yes   ready         up           system
[root@gpfsnsd1]# mmchdisk gpfs0 start -d dcs3700A_2
mmnsddiscover:  Attempting to rediscover the disks.  This may take a while ...
mmnsddiscover:  Finished.
gpfsnsd6:  Rediscovered nsd server access to dcs3700A_2.
gpfsnsd5:  Rediscovered nsd server access to dcs3700A_2.
gpfsnsd10:  Rediscovered nsd server access to dcs3700A_2.
gpfsnsd9:  Rediscovered nsd server access to dcs3700A_2.
Scanning file system metadata, phase 1 ...
6 % complete on Wed Apr 27 13:33:47 2016
25 % complete on Wed Apr 27 13:33:50 2016
41 % complete on Wed Apr 27 13:33:53 2016
58 % complete on Wed Apr 27 13:33:56 2016
76 % complete on Wed Apr 27 13:33:59 2016
90 % complete on Wed Apr 27 13:34:02 2016
100 % complete on Wed Apr 27 13:34:04 2016
Scan completed successfully.
Scanning file system metadata, phase 2 ...
Scan completed successfully.
Scanning file system metadata, phase 3 ...
Scan completed successfully.
Scanning file system metadata, phase 4 ...
Scan completed successfully.
Scanning user file metadata ...
50.23 % complete on Wed Apr 27 13:34:25 2016  (  26607616 inodes   38050968 MB)
100.00 % complete on Wed Apr 27 13:34:45 2016
Scan completed successfully.

References:

  1. Displaying GPFS™ disk states
  2. Changing GPFS disk states and parameters
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