Re: ont out of 6 bcache devices does not register automatically

Kai Krakow
2017-11-23T11:43:39Z

Am Wed, 22 Nov 2017 20:42:20 +0100
schrieb Stefan Priebe - Profihost AG <s.priebe@profihost.ag>:

> Hi Coly,
> Hi Michael,
>
>
> Am 22.11.2017 um 20:06 schrieb Stefan Priebe - Profihost AG:
> > Am 22.11.2017 um 18:51 schrieb Michael Lyle:
> >> Hi Coly, Stefan--
> >>
> >> On 11/22/2017 05:14 AM, Stefan Priebe - Profihost AG wrote:
> [...]
> [...]
> >>
> >> I don't think there's any chance this patch will do anything. If
> >> there's a deadlock, the whole thing will become stuck forever and
> >> never allow registration or progress on the device again-- which
> >> doesn't match the symptoms here.
> >
> > No it does not ;-)
> >
> >> This probably relates to udev configuration in your environment
> >> somehow.
>
> I found the problem the device is not detected as bcache by blkid -
> see here:
>
> '/sbin/blkid -o udev -p /dev/sdf1'(out) 'ID_FS_AMBIVALENT=other:bcache
> other:xfs_external_log'
>
> normally it looks like this:
> '/sbin/blkid -o udev -p /dev/sdg1'(out) 'ID_FS_TYPE=bcache'
>
> so instead of setting the FS_TYPE to bcache it's ID_FS_AMBIVALENT
> which skips the bcache udev rules.
>
> Just no idea how to fix that.

Maybe move bcache ontop of other FS in /etc/filesystems?

There's maybe an orphan XFS superblock hanging around. You could
disassemble the bcache device, wipefs, and recreate.

--
Regards,
Kai

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