Re: [gentoo-user] Re: is ddrescue this slow?

[Valmor de Almeida]

On Sat, Jan 9, 2010 at 11:10 AM, Stroller <stroller@××××××××××××××××××.uk>wrote:

[snip]


>  in the GNU manual page [1]. I believe that GNU ddrescue is the better
> version - it was inspired by garloff's original work, and makes
> improvements, but it operates differently.
>

Comment. Another reason I moved away from dd (apart from the slow running
time) to ddrescue was because of this note related to LVM.

http://www.inference.phy.cam.ac.uk/saw27/notes/backup-hard-disk-partitions.html
"Steve Holmes reports that dd with conv=sync,noerror doesn't correctly image
disks with LVM2 Logical Volumes. I haven't investigated this. He also points
out GNU ddrescue <http://www.gnu.org/software/ddrescue/ddrescue.html> ( not
the same as dd_rescue mentioned above) which looks useful. According to
Steve, ddrescue works finewith LVM2, and some
people<http://www.mail-archive.com/bug-ddrescue@×××.org/msg00038.html>seem
to suggest it's generally superior to dd_rescue."

The partition I would like to get data from is under LVM (previous post).

Thanks,

--
Valmor