check_disk and stale NFS

[VALIYEV Ruslan]

Hi all,

I would like to monitor all local and non-local filesystems on a server + check for stale NFS mount points. And according to man, the option I need is the following:

-L, --stat-remote-fs
    Only check local filesystems against thresholds. Yet call stat on remote filesystems
    to test if they are accessible (e.g. to detect Stale NFS Handles)

However, it looks like check_disk is simply hanging when there's a stale NFS.

[root at server ~]# /usr/lib64/nagios/plugins/check_disk -L -t 5
...hang state...


Here's /etc/mtab

[root at server ~]# grep nfs /etc/mtab
sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw 0 0
10.111.11.10:/icc_hds_transfer /icc_hds_transfer nfs rw,bg,addr=10.111.11.10 0 0
10.111.11.10:/ora_disk_backup /ora_disk_backup nfs rw,bg,hard,nointr,rsize=32768,wsize=32768,tcp,nfsvers=3,timeo=600,actimeo=0,addr=10.111.11.10 0 0
10.111.11.10:/icc_fast_refresh /icc_fast_refresh nfs rw,bg,addr=10.111.11.10 0 0

And here's df in hang state

[root at server ~]# df -P
Filesystem         1024-blocks      Used Available Capacity Mounted on
/dev/sda2             11904620   3857608   7432528      35% /
/dev/mapper/Volsda1-LogVol02   7935392   4927660   2598132      66% /home
/dev/mapper/Volsda1-LogVol01   7935392    439296   7086496       6% /opt
/dev/sda5              7936256    151484   7375120       3% /tmp
/dev/sda3              7936288    927140   6599492      13% /var
/dev/sda1               350018     16903    315044       6% /boot
tmpfs                 16474872         0  16474872       0% /dev/shm
/dev/sdb1            287826944 187056292  86149900      69% /u01
/dev/sdc1            287826944 172147168 101059024      64% /oratemp
...hang state...

[root at server ~]# grep nfs /var/log/messages
Nov  5 16:40:05 server kernel: nfs: server 10.111.11.10 not responding, still trying

What am I doing wrong? I just tried the latest nagios-plugins snapshot and the same thing happened.


Best regards,
Ruslan Valiyev
.
..:
Linux System Administrator
Systems Support Unit (OTAS)
Operations and Technology Division
International Computing Centre (ICC)
Email: valiyev at unicc.org
Website: www.unicc.org

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