That was one of my goals, but I discovered that the btrfs volume was 
unable to handle the millions of hard links needed by backuppc...

Too bad.

On 17/07/2016 20:14, Falko Trojahn wrote:
> Am 14.07.2016 um 14:10 schrieb Carl Wilhelm Soderstrom:
>> On 07/14 12:04 , Adam Goryachev wrote:
>>> You could also use dd, assuming that you have some method to ensure a
>>> consistent state throughout the tape backup period.
>>>
>>> 1) Store the backuppc volume on LVM, take a snapshot and stream the
>>> snapshot to tape
>> Tried doing this years ago. In that instance it caused a 4x performance hit.
>> It was better to just stop BackupPC, take a tarball of the BackupPC data
>> pool, then restart BackupPC. 12 hours of interruption in backups was better
>> than taking all weekend to write (hitchingly) to tape.
>>
> Has anybody tried having backuppc pool on btrfs subvolume, using
> btrfs snapshot and send/receive feature to copy to other server/disk?
>


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