xfsdump INTERRUPT issue

[Dave Chinner]

On Thu, Dec 06, 2012 at 03:29:33AM -0600, Stan Hoeppner wrote:
> On 12/5/2012 9:01 PM, Jeffrey Ellis wrote:
> BTW, if your goal in all of this is simply copying all the directories
> and files from one disk to another disk, you could have used "cp -a" and
> been done already.  It takes longer to execute than xfsdump/xfsrestore,
> but given you've been at this for many days now, "cp -a" would have
> already completed--long ago.

Unfortunately, using cp or rsync is not possible because the
filesystem has a real-time device attached to it. It's basically a
~10GB data device and a ~500GB real-time device. I'd say it's from a
DVR or something like that, and that Jeffrey is trying to put
a bigger disk in the DVR....

Hence there are various DVR forums that suggest xfsdump/xfsrestore
is the best method for copying such filesystems to a larger disk.
I'd guess that people haven't found xfs_rtcp, or maybe they saw the
caveat in the man page(*) and didn't use it....

Cheers,

Dave.

(*) CAVEATS
       Currently, realtime partitions are not supported under the
       Linux version of XFS, and use of a realtime partition WILL
       CAUSE CORRUPTION on the data partition. As such, this command
       is made available for curious DEVELOPERS  ONLY at  this
       point  in time.

-- 
Dave Chinner
david at fromorbit.com