filesystem inaccessible

[bassey essien_1]

Just lost access to logical volume, users are unable to access filesystem, disk utilization is close to 80%. i tried to umount the filesystem but it is not on mnttab directory, also sanity check failed: "read of super block on /dev/vg08/sall, I/O error" could it be that the filesystem is reaching maximum capacity,other LV are not affected, we have been having disk space problem for sometime, but we freed up space to make room for this particular filesystem. bdf command shows only 80% usage. could it be that a process is tying up filesystem. Any suggestion will help.
thanks.

[Patrick Wallek]

Bassey,

What happens if you do an lvdisplay -v /dev/vg##/lvol#? What output do you get? Are any of the physical volumes that this lvol is on accessable? It is possible that you have a hardware problem that is causing this.

Can you do an 'fuser -cu /mountpoint_for_lvol'? This will show all processes and users that are accessing that lvol if it works.

More details on what exactly is happening would help.

[Darrel Louis]

Bassey,

If the disk utilization is constantly 80%, it's also possible that you have a bad disk.

Try to run a dd on the disk, check for errors.
dd if=/dev/rdsk/c?t?d? of=/dev/null bs=64k

If it is a Vxfs filesystem run a fsck asfollow:
fsck -F vxfs -o full /dev/vg08/rsall