Re: Is there now a way to migrate FS without losing shared COW blocks between subvolumes?

2016-02-14 Thread Marc MERLIN
On Sat, Feb 13, 2016 at 12:28:13PM +, Duncan wrote: > Marc MERLIN posted on Fri, 12 Feb 2016 19:28:46 -0800 as excerpted: > > > btrfs send lets you keep COW blocks within a subvolume. > > But if I have lots of backups where subvolumes have shared data, and I > > need to migrate this to a new

Re: Is there now a way to migrate FS without losing shared COW blocks between subvolumes?

2016-02-13 Thread Duncan
Marc MERLIN posted on Fri, 12 Feb 2016 19:28:46 -0800 as excerpted: > btrfs send lets you keep COW blocks within a subvolume. > But if I have lots of backups where subvolumes have shared data, and I > need to migrate this to a new filesystem, is there a decent way? > > I know I can btrfs device

Re: Is there now a way to migrate FS without losing shared COW blocks between subvolumes?

2016-02-13 Thread Chris Murphy
On Fri, Feb 12, 2016 at 8:28 PM, Marc MERLIN wrote: > btrfs send lets you keep COW blocks within a subvolume. > But if I have lots of backups where subvolumes have shared data, and I need > to migrate this to a new filesystem, is there a decent way? > > I know I can btrfs device

Is there now a way to migrate FS without losing shared COW blocks between subvolumes?

2016-02-12 Thread Marc MERLIN
btrfs send lets you keep COW blocks within a subvolume. But if I have lots of backups where subvolumes have shared data, and I need to migrate this to a new filesystem, is there a decent way? I know I can btrfs device add new drive as raid1, but I'm trying to migrate off an old filesystem that