Hi Craig (sending this to the list too, for the general interest of
whomever):
I tried this out on a test machine:
1) rolled back fstab to original (non-mirror version)
2) commented out automatic load of mirror in /boot/loader.conf
3) rebooted
This worked fine, however, going back to the mirrored version of
fstab would even allow me to boot the machine until I deactivated the
mirrored drive, and reattached it (which forced it to rebuild).
Not too difficult to do though. Now, I just need to know whether it
is wise to ensure that no writing or changes to the disk are
occurring when the drives are syncing for the first time. Any ideas?
On May 17, 2006, at 4:11 PM, Craig Ryhorchuk wrote:
Good question, but I'd think there would be a chance of things getting
messed up if the kernel thought you had a mirror and you were
trying to
use the two drives independently. Stuff like whatever you write to /
ending up in the middle of your /usr partition on drive 2 as well.
Or it might just not boot or maybe it'd work. I'm not willing to try
it just because I don't want to have to rebuild everything on the one
server I have it set up on.
-----Original Message-----
From: Joe Auty [mailto:[EMAIL PROTECTED]
Sent: May 17, 2006 3:58 PM
To: Craig Ryhorchuk
Subject: Re: undo geom mirror
Thanks for your response!
So, basically, all I have to do is just undo fstab and loader.conf,
and that will essentially get me back up and running? What would
happen if I didn't remove the mirror?
On May 17, 2006, at 3:40 PM, Craig Ryhorchuk wrote:
I'm sending this off-list because apparently even though spammers
have free posting access to the list, I don't.
Just to be safe, I'd recommend removing your primary bootdisk from
the
mirror, changing your /etc/fstab back to the original values as
well as /boot/loader.conf.
At this point you should be safely able to simply boot from the
original
boot disk and remove the second drive from the GM and delete the
whole
mirror.
Make sure you have the boot CD available just in case. If you
forget/mess up one step like I did when setting one up it's easy to
fix.
- Craig
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Joe Auty
Sent: May 17, 2006 7:47 AM
To: FreeBSD Questions
Subject: undo geom mirror
Hello,
What is the best way to "undo" a geom-based mirror, just out of
curiosity, and return the configuration to allowing independent
control over the two disks?
something like this?
gmirror clear mirror/gm0
gmirror remove ad1
gmirror remove ad2
- unload geom, remove from boot/loader.conf
- revise /etc/fstab
Please help me fill in the gaps here, I've never successfully done
this.... Or, is this procedure inadvisable?
-----------
Joe Auty
NetMusician: web publishing software for musicians
http://www.netmusician.org
[EMAIL PROTECTED]
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