Re: Clone logical volume using dd

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On Sun, Nov 22, 2020 at 08:47:33PM -0700, Chris Murphy wrote:
> ext4 I think it has some kind of dump facility but the man page for
> dumpe2fs doesn't look like it does that. So I'm not sure.

dumpe2fs is for dumping the filesystem information for ext2/3/4.  The
package name for the filesystem dump/restore is appropriately named
'dump' and contains a 'dump' and 'restore' executable.  The advantages
of being there before the others. :)

'dump' is probably the most appropriate tool to capture an ext4 volume
to be converted to a thin-provisioned volume.  Tar could also work as
long as you capture all the extended (selinux) attributes, which I
don't believe were described in the other post.  dump/restore will
only copy the data (and not unused blocks) and it reads the filesystem
directly rather than going through the VFS layer.

-- 
Jonathan Billings <billings@xxxxxxxxxx>
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