Am Samstag, 31. Oktober 2015, 12:10:37 CET schrieb Martin Steigerwald:
> Am Donnerstag, 22. Oktober 2015, 10:41:15 CET schrieb Martin Steigerwald:
> > I get this:
> >
> > merkaba:~> btrfs scrub status -d /
> > scrub status for […]
> > scrub device /dev/mapper/sata-debian (id 1) history
> >
> > scrub started at Thu Oct 22 10:05:49 2015 and was aborted after
> > 00:00:00
> > total bytes scrubbed: 0.00B with 0 errors
> >
> > scrub device /dev/dm-2 (id 2) history
> >
> > scrub started at Thu Oct 22 10:05:49 2015 and was aborted after
> > 00:01:30
> > total bytes scrubbed: 23.81GiB with 0 errors
> >
> > For / scrub aborts for sata SSD immediately.
> >
> > For /home scrub aborts for both SSDs at some time.
> >
> > merkaba:~> btrfs scrub status -d /home
> > scrub status for […]
> > scrub device /dev/mapper/msata-home (id 1) history
> >
> > scrub started at Thu Oct 22 10:09:37 2015 and was aborted after
> > 00:01:31
> > total bytes scrubbed: 22.03GiB with 0 errors
> >
> > scrub device /dev/dm-3 (id 2) history
> >
> > scrub started at Thu Oct 22 10:09:37 2015 and was aborted after
> > 00:03:34
> > total bytes scrubbed: 53.30GiB with 0 errors
> >
> > Also single volume BTRFS is affected:
> >
> > merkaba:~> btrfs scrub status /daten
> > scrub status for […]
> >
> > scrub started at Thu Oct 22 10:36:38 2015 and was aborted after
> > 00:00:00
> > total bytes scrubbed: 0.00B with 0 errors
> >
> > No errors in dmesg, btrfs device stat or smartctl -a.
> >
> > Any known issue?
>
> I am still seeing this in 4.3-rc7. It happens so that on one SSD BTRFS
> doesn´t even start scrubbing. But in the end it aborts it scrubbing anyway.
>
> I do not see any other issue so far. But I would really like to be able to
> scrub my BTRFS filesystems completely again. Any hints? Any further
> information needed?
>
> merkaba:~> btrfs scrub status -d /
> scrub status for […]
> scrub device /dev/dm-5 (id 1) history
> scrub started at Sat Oct 31 11:58:45 2015, running for 00:00:00
> total bytes scrubbed: 0.00B with 0 errors
> scrub device /dev/mapper/msata-debian (id 2) status
> scrub started at Sat Oct 31 11:58:45 2015, running for 00:00:20
> total bytes scrubbed: 5.27GiB with 0 errors
> merkaba:~> btrfs scrub status -d /
> scrub status for […]
> scrub device /dev/dm-5 (id 1) history
> scrub started at Sat Oct 31 11:58:45 2015, running for 00:00:00
> total bytes scrubbed: 0.00B with 0 errors
> scrub device /dev/mapper/msata-debian (id 2) status
> scrub started at Sat Oct 31 11:58:45 2015, running for 00:00:25
> total bytes scrubbed: 6.59GiB with 0 errors
> merkaba:~> btrfs scrub status -d /
> scrub status for […]
> scrub device /dev/dm-5 (id 1) history
> scrub started at Sat Oct 31 11:58:45 2015, running for 00:00:00
> total bytes scrubbed: 0.00B with 0 errors
> scrub device /dev/mapper/msata-debian (id 2) status
> scrub started at Sat Oct 31 11:58:45 2015, running for 00:01:25
> total bytes scrubbed: 21.97GiB with 0 errors
> merkaba:~> btrfs scrub status -d /
> scrub status for […]
> scrub device /dev/dm-5 (id 1) history
> scrub started at Sat Oct 31 11:58:45 2015 and was aborted after
> 00:00:00 total bytes scrubbed: 0.00B with 0 errors
> scrub device /dev/mapper/msata-debian (id 2) history
> scrub started at Sat Oct 31 11:58:45 2015 and was aborted after
> 00:01:32 total bytes scrubbed: 23.63GiB with 0 errors
>
>
> For the sake of it I am going to btrfs check one of the filesystem where
> BTRFS aborts scrubbing (which is all of the laptop filesystems, not only
> the RAID 1 one).
>
> I will use the /daten filesystem as I can unmount it during laptop runtime
> easily. There scrubbing aborts immediately:
>
> merkaba:~> btrfs scrub start /daten
> scrub started on /daten, fsid […] (pid=13861)
> merkaba:~> btrfs scrub status /daten
> scrub status for […]
> scrub started at Sat Oct 31 12:04:25 2015 and was aborted after
> 00:00:00 total bytes scrubbed: 0.00B with 0 errors
>
> It is single device:
>
> merkaba:~> btrfs fi sh /daten
> Label: 'daten' uuid: […]
> Total devices 1 FS bytes used 227.23GiB
> devid 1 size 230.00GiB used 230.00GiB path
> /dev/mapper/msata-daten
>
> btrfs-progs v4.2.2
> merkaba:~> btrfs fi df /daten
> Data, single: total=228.99GiB, used=226.79GiB
> System, single: total=4.00MiB, used=48.00KiB
> Metadata, single: total=1.01GiB, used=449.50MiB
> GlobalReserve, single: total=160.00MiB, used=0.00B
>
>
> I do not see any output in btrfs check that points to any issue:
>
> merkaba:~> btrfs check /dev/msata/daten
> Checking filesystem on /dev/msata/daten
> UUID: 7918274f-e2ec-4983-bbb0-aa93ef95fcf7
> checking extents
> checking free space cache
> checking fs roots
> checking csums
> checking root refs
> found 243936530607 bytes used err is 0
> total csum bytes: 237758932
> total tree bytes: 471384064
> total fs tree bytes: 116473856
> total extent tree bytes: 78544896
> btree space waste bytes: 57523323
> file data blocks allocated: 422700576768
> referenced 243803443200
> btrfs-progs v4.2.2
Even with 4.4-rc2 this issue still happens:
merkaba:~> btrfs scrub status -d /
scrub status for […]
scrub device /dev/mapper/sata-debian (id 1) history
scrub started at Wed Nov 25 16:28:33 2015, running for 00:00:00
total bytes scrubbed: 0.00B with 0 errors
scrub device /dev/dm-2 (id 2) status
scrub started at Wed Nov 25 16:28:33 2015, running for 00:00:55
total bytes scrubbed: 14.24GiB with 0 errors
merkaba:~> btrfs scrub status -d /
scrub status for […]
scrub device /dev/mapper/sata-debian (id 1) history
scrub started at Wed Nov 25 16:28:33 2015 and was aborted after
00:00:00
total bytes scrubbed: 0.00B with 0 errors
scrub device /dev/dm-2 (id 2) history
scrub started at Wed Nov 25 16:28:33 2015 and was aborted after
00:01:33
total bytes scrubbed: 23.71GiB with 0 errors
merkaba:~> cat /proc/version
Linux version 4.4.0-rc2-tp520+ (martin@merkaba) (gcc version 5.2.1 20151121
(Debian 5.2.1-24) ) #45 SMP PREEMPT Mon Nov 23 17:10:16 CET 2015
This time I also removed all files in /var/lib/btrfs to avoid any possible
issues with saved BTRFS status reports. (Yeah, I think it would have been
enough to just delete the one for the filesystem with that UUID.)
As written this bug also happens with a single device BTRFS.
I´d report a bug report, in case anyone would be interested. But if the
interest it like in this mailinglist post I can spare myself the time for
reporting via bugzilla.
So does anyone at all care about this issue?
Thanks,
--
Martin
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