nfs package failover success but client get statfs error message

public — Thu, 06 Nov 2008 05:17:32 GMT

Hi,

I get a problem on linux mcsg nfs toolkit package, I create a NFS package success and export two file systems

[root@filesrv2 ~]# showmount -e
Export list for filesrv2:
/tank *
/user *

On client, mount those two NFS filesystem as following

[root@tapesrv1 /]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
56443212 7698544 45877468 15% /
/dev/cciss/c0d0p1 98747 22323 71325 24% /boot
none 16455476 0 16455476 0% /dev/shm
/dev/mapper/VolGroup00-LogVol03
30254032 238512 28478704 1% /tmp
/dev/mapper/VolGroup00-LogVol04
20642428 77800 19516052 1% /scratch
10.10.12.8:/user 2580277440 109152 2449097728 1% /user
10.10.12.8:/tank 8256977920 11836320 8169308576 1% /tank

mount command report

10.10.12.8:/user on /user type nfs (rw,hard,addr=10.10.12.8)
10.10.12.8:/tank on /tank type nfs (rw,hard,addr=10.10.12.8)

But when I try to failover nfs package to another node, the nfs client dmesg get nfs_statfs: statfs error = 116 message and the df command output as following

[root@tapesrv1 /]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
56443212 7697796 45878216 15% /
/dev/cciss/c0d0p1 98747 22323 71325 24% /boot
none 16455476 0 16455476 0% /dev/shm
/dev/mapper/VolGroup00-LogVol03
30254032 238512 28478704 1% /tmp
/dev/mapper/VolGroup00-LogVol04
20642428 77800 19516052 1% /scratch
10.10.12.8:/user 8256977920 11836320 8169308576 1% /user
10.10.12.8:/tank - - - - /tank

Do you see ? the /user still there but the content become /tank directory's content and /tank fail to reconnect, does anyone get such problem before ?

Re: nfs package failover success but client get statfs error message

Steven E. Protter — Thu, 06 Nov 2008 16:08:36 GMT

Shalom,

the nfs stats data is going to be skewed because its collected on two servers.

Is the mount going to the floating IP address?

SEP

Re: nfs package failover success but client get statfs error message

public — Thu, 06 Nov 2008 17:25:28 GMT

Hi,

Sure, 10.10.12.8 is floating IP address, I get following finding on NFS toolkit V3 release note known issue

JAGaf57739: HA NFS and â Stale NFS Handleâ

The workround are followings

1. Create the logical volumes with persistent minor numbers.
2. Export the filesystem with an assigned filesystem identification

I don't know if this can resolve my problem .... try tomorrow.

topic Re: nfs package failover success but client get statfs error message in Operating System - Linux

nfs package failover success but client get statfs error message

Re: nfs package failover success but client get statfs error message

Re: nfs package failover success but client get statfs error message