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Re: [BackupPC-users] Block-level rsync-like hashing dd?
2011-04-12 15:44:27
"Jeffrey J. Kosowsky" <backuppc AT kosowsky DOT org>
wrote on 04/10/2011 01:57:01 PM:
> The only problem with dd is that you would generally need to either
> make a "snapshot" (e.g., using lvm2) or shutdown BackupPC
and unmount
> the drives to assure a perfect partition copy.
You always have to unmount (for it to work correctly,
anyway), whether you're dd'ing the partition raw or using LVM. The
difference with LVM is that you only have to have it umounted for a brief
moment, and without it for the entire time of the DD.
> I'm not sure though how a 'dd' of an lvm2 snapshot works and what
you
> would need to do on the new drive to get it to mount.
The same thing you'd have to do in any other case:
mount it! :)
It's a bit-for-bit copy. It just works.
Timothy J. Massey
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