From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Oliver Xymoron <oxymoron@waste.org>
Cc: Richard Bonomo <bonomo@sal.wisc.edu>,
linux-kernel@vger.kernel.org,
Richard Bonomo <bonomo@maddog.sal.wisc.edu>
Subject: Re: backups/dumps/caches
Date: 06 Aug 2002 23:34:15 +0100 [thread overview]
Message-ID: <1028673255.18478.205.camel@irongate.swansea.linux.org.uk> (raw)
In-Reply-To: <Pine.LNX.4.44.0208061533520.14600-100000@waste.org>
On Tue, 2002-08-06 at 21:54, Oliver Xymoron wrote:
> > 2. Perhaps, naively, is it possible to shut off
> > caching temporarily (and without rebooting),
> > accepting the performance hit, while a dump
> > is done, and then restart caching afterwards?
>
> Yep. Switch to single user mode, sync all filesystems, unmount them for
> good measure, dump, then switch back to multiuser mode.
If you are using 2.4.19 then the actual bug dump hits is sorted. Dumping
a live fs still will mean you end up restoring a not 100% consistent
state of one file versus another and of file data for a given file. You
have to weigh that against downtime. In most cases the downtime isnt
worth it for having a few files that are logged in a transient state.
next prev parent reply other threads:[~2002-08-06 21:11 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-06 0:32 backups/dumps/caches Richard Bonomo
2002-08-06 20:54 ` backups/dumps/caches Oliver Xymoron
2002-08-06 22:34 ` Alan Cox [this message]
2002-08-06 23:58 ` backups/dumps/caches Nathan Scott
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