Re: Copying related snapshots to another server with btrfs send/receive?

[Marc MERLIN <marc@merlins.org>]

On Sun, May 04, 2014 at 09:16:02AM +0200, Brendan Hide wrote:
> Sending one-at-a-time, the shared-data relationship will be kept by
> using the -p (parent) parameter. Send will only send the differences
> and receive will create a new snapshot, adjusting for those
> differences, even when the receive is run on a remote server.
> 
> $ btrfs send backup | btrfs receive $path/
> $ btrfs send -p backup backup.sav1 | btrfs receive $path/
> $ btrfs send -p backup.sav1 backup.sav2 | btrfs receive $path/
> $ btrfs send -p backup.sav2 backup.sav3 | btrfs receive $path/
> $ btrfs send -p backup.sav3 backup.sav4 | btrfs receive $path/

So this is exactly the same than what I do incremental backups with
brrfs send, but -p only works if the snapshot is read only, does it not?
I do use that for my incremental syncs and don't mind read only
snapshots there, but if I have read/write snapshots that are there for
other reasons than btrfs send incrementals, can I still send them that
way with -p?
(I thought that wouldn't work)

Thanks,
Marc
-- 
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
                                      .... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/                         | PGP 1024R/763BE901