Hi guys,

Good day!
I have a server which has 2 partitions attached to SAN storage. Let say /uo2 and /uo3. I am having problem with only one of the attached storage mounted as read only and the other one as fine (rw).

Once rebooted, it is OK right now. It could be happened later on. I tried to fsck but it was buzy even though I have unmounted it. Do you guys have any idea on this or some input to solve this before it happens again?

Thanks.

Please have a look at the output of the commands 'mount -l' and "df -ah". My guess is that the read-only mounted partition is mounted twice.

mount -l

/dev/mapper/vg0-lv1 on / type ext3 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/mapper/vg0-lv2 on /home type ext3 (rw)
/dev/mapper/vg0-lv6 on /u01 type ext3 (rw)
/dev/mapper/vg0-lv5 on /tmp type ext3 (rw)
/dev/mapper/vg0-lv3 on /usr type ext3 (rw)
/dev/mapper/vg0-lv4 on /var type ext3 (rw)
/dev/mapper/vg1-lv0 on /u02 type ext3 (rw)
/dev/mapper/vg2-lv0 on /u03 type ext3 (rw)
/dev/sda1 on /boot type ext3 (rw) [/boot]
tmpfs on /dev/shm type tmpfs (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)

df -ah

Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg0-lv1 3.0G 541M 2.3G 20% /
proc 0 0 0 - /proc
sysfs 0 0 0 - /sys
devpts 0 0 0 - /dev/pts
/dev/mapper/vg0-lv2 12G 4.8G 6.3G 43% /home
/dev/mapper/vg0-lv6 90G 15G 70G 18% /u01
/dev/mapper/vg0-lv5 992M 46M 896M 5% /tmp
/dev/mapper/vg0-lv3 7.8G 2.6G 4.9G 35% /usr
/dev/mapper/vg0-lv4 7.8G 915M 6.5G 13% /var
/dev/mapper/vg1-lv0 394G 199M 374G 1% /u02
/dev/mapper/vg2-lv0 197G 52G 136G 28% /u03
/dev/sda1 99M 16M 78M 17% /boot
tmpfs 12G 0 12G 0% /dev/shm
none 0 0 0 - /proc/sys/fs/binfmt_misc
sunrpc 0 0 0 - /var/lib/nfs/rpc_pipefs

The bold fonts are from SAN storage. It is mounted once only.

are you using multipath, if so paste the o/p of

multipath -ll

Nothing return for the command..