On 11/2/2016 5:29 PM, Adam Goryachev wrote:
> Can you describe your "failed pool migrations"? ie, in what way did
> they fail?
In only one case did the transference get far enough to actually to run
backuppc.
Several attempts, using an intermediary physical disk, resulted in an
unmountable partition or took too long and were aborted (attempting to
use rsync).
Another attempt, using dd, did result in a mountable partition, which I
converted to ext4. Backuppc simply couldn't see any backups in the pool,
and wouldn't successfully complete any new backups.
I posted to the list about that a few days ago on 10/24, but no one
responded.
> What did you do (exact commands would help)? What happened?
The most successful copying method (in terms of both speed and resulting
in a mountable partition) is using DD over Netcat:
dd bs=1M in=/dev/src | nc }--network--{ nc | dd bs=1M of=/dev/dst
This runs reasonably fast, taking only about 8 to 10 hours to copy the data.
> What are the error messages?
There were no discernible errors, BackupPC simply didn't work - it
showed no backups for any hosts, and when trying to complete the backup
would fail and not log the error - almost like it couldn't write to the
pool, but I re-verified permissions at least a dozen times. I've
reinstalled the OS since then, so any logs are lost.
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