NFS Mounts

From: Shawn Guillemette (sguillemette@metrocastcablevision.com)
Date: Thu Jan 27 2005 - 12:45:05 EST

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I have 3 MX servers that are configured in a veritas cluster
environment. Each MX server has the same NFS mount to a netapp. I
noticed today that the NFS mounts on 2 of the MX servers is missing.
However I can cd to the mounts and view data. They also seem to be
handling the work load handed to them with no issues.

on server A
(server with nfs mount visible)

the df output looks like this

bash-2.05# df -k
File system kbytes used avail capacity Mounted on
/dev/md/dsk/d0 26707933 1653078 24787776 7% /
/proc 0 0 0 0% /proc
mnttab 0 0 0 0% /etc/mnttab
fd 0 0 0 0% /dev/fd
/dev/md/dsk/d3 4129290 2704913 1383085 67% /var
swap 7165520 24 7165496 1% /var/run
swap 1048576 100560 948016 10% /tmp
NFS--> /dev/md/dsk/d8 34980991 514569 34116613 2% /mc/data/mail
bash-2.05#

On server B
(one of the 2 missing the NFS mount)

bash-2.05# df -k
Filesystem kbytes used avail capacity Mounted on
/dev/md/dsk/d0 32233606 1668237 30243033 6% /
/proc 0 0 0 0% /proc
mnttab 0 0 0 0% /etc/mnttab
fd 0 0 0 0% /dev/fd
/dev/md/dsk/d3 4130982 583674 3505999 15% /var
swap 2777008 24 2776984 1% /var/run
swap 1048576 16 1048560 1% /tmp
bash-2.05#

I can not see the NFS mount
How ever, I can cd to it and view data.

bash-2.05# cd /mc/data/
bash-2.05# ls
mail
bash-2.05# cd mail/
bash-2.05# ls
alias bin boot control doc man qmail-send.pid qmail-smtp.pid queue users
bash-2.05# pwd
/mc/data/mail
bash-2.05#

The 2 servers that are having the issue are doing the same thing

Looking at the machine that has the mount visible. I attempt to cd to
the dev ..

cd /dev/md/dsk/

then
ls -la d8 shows this

lrwxrwxrwx 1 root root 36 May 25 2004 /dev/md/dsk/d8 ->
../../../devices/pseudo/md@0:0,8,blk

so I know this will not show any useful data but I tried any how..

I then more ../../../devices/pseudo/md@0:0,8,blk
'

I get htis
bash-2.05# more ../../../devices/pseudo/md@0:0,8,blk
CC.')`.`,<nC=P`bC!B4CB>C' 2 hd 27 sec 10`

b C 8C?C?C?C AC8B;C&7lCB'C?C?C C?C?C<
C?C?C> @kC 4
I`b B4jA]C:ACCzC=/mc/data/mail
"C ^LB5B6B7B>B8B9B:B;pjklmnuo
!("#$CCCCCCCC<=D>?@ABC0C1C2C3C4C;C5C6B%B&B'B.B(B)B*B+`Z[\]^e_CC
CCCC} , 3 - . / 0 1 8 C C! --M

So I try this on the two machines that are having the issue and see this

bash-2.05# more ../../../devices/pseudo/md@0:0,8,blk
../../../devices/pseudo/md@0:0,8,blk: No such device or address
bash-2.05#

Is this simply cause its not mounted correctly?

Any advise would be great thanks,

Shawn Guillemette
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