Kevin Coulter <[EMAIL PROTECTED]> wrote:
>I have telnet-only access to a server that was preconfigured with
>mirroring / RAID1. However, I want to disable this feature for
>additional disk space. I'm a bit nervous of screwing this up since I
>don't have physical access. I've read RAID-HOWTO and checked elsewhere
>but have not find any solution to doing this. Are these steps correct or
>have I missed something?
>
>1. run /sbin/raidstop
>2. Replace any "md" strings with "sd" in /etc/fstab
>3. Replace any "md" strings with "sd" in lilo.conf and run /sbin/lilo
>4. Replace any "md" strings with "sd" in /etc/rc.d scripts
>5. shutdown -r now "pray"
I don't think this will work. AFAIK, a partition that's been formatted for
RAID can't be mounted by using the actual physical partitions - like
/dev/sda1 or /dev/sdb1. However, I may be wrong on this.
What filesystems/directories are RAID1? If everything is RAID1 you won't
be able to run raidstop because the "/" filesystem is in use. If only
specific filesystems/directories are RAID1 there might be a way around the
problem. I don't think there's any non-destructive way to revert from a
RAID1 filesystem back to a regular filesystem. Meaning I think you'll have
to backup all the data, repartition/reformat as regular filesystems and
restore the data. I recently created a RAID1 mirror for /home and had to
do that - backup, repartition/reformat and restore.
The only *possible* way would be to "break" the mirror somehow. I don't
know if taking the second disk out of /etc/raidtab and rebooting would be
sufficient or not. If so, you'd still have a RAID1 filesystem on sda that
would run in degraded mode because sdb would no longer be in raidtab. You
could then use sdb for whatever you wanted, although you'd still need to
repartition/reformat it. However, the kernel would keep logging to
/var/log/messages and possibly the console about the broken RAID1. Again,
I don't have any idea if this would work or not and even so it's still
highly risky remotely. If I was to attempt this I'd make sure I had a good
full backup and I'd want to be at the console. I don't envy your dilemma
at all. :-(
What about just buying another disk? You don't have physical access but
somebody must - could they install a new disk for you?
-Eric
Eric Sisler
Library Computer Technician
Westminster Public Library
Westminster, CO, USA
[EMAIL PROTECTED]
Linux - don't fear the Penguin.
Want to know what we use Linux for?
Visit http://gromit.westminster.lib.co.us/linux
_______________________________________________
Redhat-list mailing list
[EMAIL PROTECTED]
https://listman.redhat.com/mailman/listinfo/redhat-list
