dump and restore
Roland Smith
rsmith at xs4all.nl
Fri Jul 18 21:44:03 UTC 2008
On Fri, Jul 18, 2008 at 11:21:26PM +0200, Peter Boosten wrote:
> Hi all,
>
> My harddisk was failing and I wanted the data copied to another disk,
> but since my original wouldn't boot, I installed a minimal FreeBSD on
> the new disk, mounted the old partitions under /mnt and copied from the
> original to the new partitions by using:
>
> dump 0af - /dev/ad2s1[adef] | restore xf -
>
> (the partitions adef where done one by one)
>
> The /usr/ partition was 74Gb, and it took (according to dump 52631
> seconds (~ 14.5 hours) to copy. Both disks are IDE, in the same machine
> on different IDE controllers.
>
> Is it normal for a backup/restore to take this long? Or could this be
> 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.
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.
If the failing disk was giving trouble, you might find errors in
/var/log/messages.
Roland
--
R.F.Smith http://www.xs4all.nl/~rsmith/
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