>> 30 devices is really not that much, heck you get 90 disks top load JBOD
>> storage chassis these days and BTRFS does sound like an attractive choice
>> for things like that.
> So Mike's case is, that both metadata and data are configured as
> raid6, and the operations, balance and scrub, that
> Could you please paste the whole dmesg, it looks like it hit
> btrfs_abort_transaction(),
> which should give us more information about where goes wrong.
The whole thing is here https://pastebin.com/4ENq2saQ
The
>>Mar 15 14:03:06 auswscs9903 kernel: BTRFS warning (device sdag): failed
>>setting block group ro: -30
> These are only found in scrub.c
Interesting. I'm running an offline btrfs check right now, so far extents and
free space cache seem to have passed.
If that finishes successfully, I'll
ill mount, but any significant i/o to the volume cause it to
drop r/o.
Mike Stevens
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> That's a hell of a filesystem. RAID5 and RAID5 is unstable and should
> not be used for anything but throw away data. You will be happy that you
> value you data enough to have backups because all sensible sysadmins
> do have backups correct?! (Do read just about any of Duncan's replies -
. How best to address this
problem?
Freundliche Grüße / Best regards,
Mike Stevens
Senior Systems Administrator - SC3
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