Re: Backup a entire System
From: Dragan Cvetkovic (me_at_privacy.net)
Date: 06/30/05
- Previous message: Darren Dunham: "Re: tape compression on hardware and compression via device ( /dev/rmt/1[m,c]n )"
- In reply to: Darren Dunham: "Re: Backup a entire System"
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Date: Thu, 30 Jun 2005 12:41:12 -0400
Darren Dunham <ddunham@redwood.taos.com> writes:
> aryzhov@spasu.net wrote:
>>> This partitions should be unmounted,correct?
>> No.
>> Partition must be quiet.
>> Read access doesn't hurt, but writes while backing up
>> may make your ufsdump data inconsistent.
>> To make 100% sure, you may want to
>> mount -o ro,remount DISKCLICE MOUNTPOINT
>> before
>> ufsdump 0f TAPEDEVICE MOUNTPOINT
>> and
>> mount -o rw,remount DISKSLICE MOUNTPOINT
>> after ufsdump is done.
>
> You can't remount a filesystem ro (unless someone changed that
> recently). You can use 'fssnap' to create a snapshot, though.
I wonder if you can use
lockfs -w
as an option for that as well... If you can't or don't want to use fssnap,
that is. fssnap needs backing store, that's the problem and you can't
always find it...
Dragan
-- Dragan Cvetkovic, To be or not to be is true. G. Boole No it isn't. L. E. J. Brouwer !!! Sender/From address is bogus. Use reply-to one !!!
- Previous message: Darren Dunham: "Re: tape compression on hardware and compression via device ( /dev/rmt/1[m,c]n )"
- In reply to: Darren Dunham: "Re: Backup a entire System"
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