[arch-general] can't balance full btrfs raid6 filesystem

[Leonid Isaev]

On Mon, Feb 22, 2016 at 06:48:17PM +0000, Jameson wrote:
> On Mon, Feb 22, 2016 at 1:43 PM Leonid Isaev <leonid.isaev at jila.colorado.edu>
> wrote:
> 
> > See this:
> >
> > http://marc.merlins.org/perso/btrfs/post_2014-05-04_Fixing-Btrfs-Filesystem-Full-Problems.html
> >
> > Basically, when your btrfs is full, just create a loopback device, add it
> > to
> > the array, rebalance and then remove the device. This is what I had to do
> > this
> > Sunday :)
> >
> 
> I don't know if you saw the beginning of the thread, but what started this
> whole mess was I allowed a raid6 btrfs filesystem to fill up, and couldn't
> balance it even after adding a real disk. (I tried a loopback device
> first.)

Yeah, I already forgot the beginning of the thread :) Although, are you sure
that 1 extra disk will be OK? For raid6 you may need to add more than one...

HTH,
-- 
Leonid Isaev
GPG fingerprints: DA92 034D B4A8 EC51 7EA6  20DF 9291 EE8A 043C B8C4
                  C0DF 20D0 C075 C3F1 E1BE  775A A7AE F6CB 164B 5A6D