Am Sat, 19 Jul 2014 18:53:03 -0600 schrieb Chris Murphy <li...@colorremedies.com>:
> > On Jul 19, 2014, at 2:58 PM, Marc Joliet <mar...@gmx.de> wrote: > > > Am Sat, 19 Jul 2014 22:10:51 +0200 > > schrieb Marc Joliet <mar...@gmx.de>: > > > > [...] > >> Another random idea: the number of errors decreased the second time I ran > >> balance (from 4 to 2), I could run another full balance and see if it keeps > >> decreasing. > > > > Well, this time there were still 2 ENOSPC errors. But I can show the df > > output > > after such an ENOSPC error, to illustrate what I meant with the sudden surge > > in total usage: > > > > # btrfs filesystem df /run/media/marcec/MARCEC_BACKUP > > Data, single: total=236.00GiB, used=229.04GiB > > System, DUP: total=32.00MiB, used=36.00KiB > > Metadata, DUP: total=4.00GiB, used=3.20GiB > > unknown, single: total=512.00MiB, used=0.00 > > > > And then after running a balance and (almost) immediately cancelling: > > > > # btrfs filesystem df /run/media/marcec/MARCEC_BACKUP > > Data, single: total=230.00GiB, used=229.04GiB > > System, DUP: total=32.00MiB, used=36.00KiB > > Metadata, DUP: total=4.00GiB, used=3.20GiB > > unknown, single: total=512.00MiB, used=0.00 > > I think it's a bit weird. Two options: a. Keep using the file system, with > judicious backups, if a dev wants more info they'll reply to the thread; b. > Migrate the data to a new file system, first capture the file system with > btrfs-image in case a dev wants more info and you've since blown away the > filesystem, and then move it to a new btrfs fs. I'd use send/receive for this > to preserve subvolumes and snapshots. OK, I'll keep that in mind. I'll keep running the file system for now, just in case it's a run-time error (i.e., a bug in the balance code, and not a problem with the file system itself). If it gets trashed on its own, or I move to a new file system, I'll be sure to follow the steps you outlined. > Chris Murphy Thanks -- Marc Joliet -- "People who think they know everything really annoy those of us who know we don't" - Bjarne Stroustrup
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