LSM disk0 Failure

From: J Bacher <jb_at_jbacher.com>
Date: Tue, 10 Jul 2001 14:45:06 -0500

 From a previous summary where an indivdual had 4 disks with RAID. Are
these the same directions for 2 disks with mirroring using LSM?

I have a production machine that is considered critical and I need to
verify or get any additional logical detail prior to replacing disk0. I am
currently active on disk1.

What impact do I have on my current active disk -- disk1 -- are there reads
and writes or does this disk retain its original information and operate in
read mode during the rebuild?

Thanks in advance.


_Fix LSM_
1. From the menus given in 'voldiskadm', remove and replace the faulty
disk. The voldiskadm utility will disklabel the disk and everything!
2. Either 'volume maint', 'volume resync', 'volume init active' or 'volume
init zero' the volume to enable the volume and make it active. (I ended up
using all these commands, don't know which one did the job. It was at this
point that I was asking for help.)

_Caution_
Do NOT 'mount' or 'verify' advfs volumes until you rebuild advfs. If you
do, the system crashes, and you need to boot from CD before you can try
fixing. That is, if you have your volumes noted in /etc/fstab like I do ...

_Fix advfs_
The advfs domain which held the faulty disk was lost when the disk when
faulty. Will need to rebuild this domain.
1. Note your naming convention, sizes, etc. if you need to. /etc/fstab
helps.
2. 'rmfdmn' to remove the domain.
3. 'mkfdmn' to recreate the domain.
4. 'mkfset' to recreate the file sets.

_Restore_
vrestore the files belonging to this file domain back onto it.
Received on Tue Jul 10 2001 - 19:45:41 NZST

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