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Date:      Fri, 18 Jul 2008 23:43:54 +0200
From:      Roland Smith <rsmith@xs4all.nl>
To:        Peter Boosten <peter@boosten.org>
Cc:        FreeBSD Questions <freebsd-questions@freebsd.org>
Subject:   Re: dump and restore
Message-ID:  <20080718214354.GA77685@slackbox.xs4all.nl>
In-Reply-To: <48810956.5090905@boosten.org>
References:  <48810956.5090905@boosten.org>

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On Fri, Jul 18, 2008 at 11:21:26PM +0200, Peter Boosten wrote:
> Hi all,
>=20
> My harddisk was failing and I wanted the data copied to another disk,=20
> but since my original wouldn't boot, I installed a minimal FreeBSD on=20
> the new disk, mounted the old partitions under /mnt and copied from the=
=20
> original to the new partitions by using:
>=20
> dump 0af - /dev/ad2s1[adef] | restore xf -
>=20
> (the partitions adef where done one by one)
>=20
> The /usr/ partition was 74Gb, and it took (according to dump 52631=20
> seconds (~ 14.5 hours) to copy. Both disks are IDE, in the same machine=
=20
> on different IDE controllers.
>=20
> Is it normal for a backup/restore to take this long? Or could this be=20
> due to my failing disk?

When dumping to a file it should not take this long. But in this case it
might be that dump is waiting for restore, since the space in a pipe is
not infinite.=20

Also, when dumping mounted partitions you should use the -L flag with
dump. But in a case like this there is little reason to mount the old
partitions.=20

If the failing disk was giving trouble, you might find errors in
/var/log/messages.=20

Roland
--=20
R.F.Smith                                   http://www.xs4all.nl/~rsmith/
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