Re: Fwd: Bug#715019: linux-image-3.10-rc7-amd64: Bcache (with cache on LVM?) stops system from shutting down

[Kent Overstreet <kmo-PEzghdH756F8UrSeD/g0lQ@public.gmane.org>]

On Sun, Jul 14, 2013 at 01:24:24PM +0200, Josep Lladonosa wrote:
> ---------- Forwarded message ----------
> From: Josep Lladonosa <jlladono-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> Date: 14 July 2013 13:23
> Subject: Re: Bug#715019: linux-image-3.10-rc7-amd64: Bcache (with cache on
> LVM?) stops system from shutting down
> To: linux-bcache-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> 
> 
> Hello,
> 
> I have added new info to this bug. Forward it to this list:
> 
> To: 715019-61a8vm9lEZVf4u+23C9RwQ@public.gmane.org
> Subject: Bug#715019: linux-image-3.10-rc7-amd64: Bcache (with cache on LVM?)
> stops system from shutting down
> From: Josep Lladonosa <jlladono-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> Date: Sun, 14 Jul 2013 00:55:00 +0200
> Message-id:
> <CAPBO7TbcPWAq2rePLsxLapb8y75gNWmUe-RB6ONcR9cNd=cEag-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
> Reply-to: Josep Lladonosa <jlladono-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, 715019-61a8vm9lEZVf4u+23C9RwQ@public.gmane.org
> 
> ________________________________
> Hello,
> 
> I would like to comment that the same behaviour is happening to my system.
> 
> 
> Root filesystem is ext3 on /dev/bcache0, which works with /dev/sda3 as the
> backing partition and /dev/sdb as the cache disk (it is an msata version).
> (System was on LVM before, but changed it to ext3 to keep it easier for the
> bcache).
> 
> bcache is not shutting down well, and the system cannot shutdown,reboot,
> suspend, hibernate.
> When shutting down, messages are like:
> 
> ...
> mei_me 000:00:16:0:stop
> exception Emask 0x0 SACT 0x3 SErr 0x0 action 0x6 frozen
> failed command: WRITE FPDMA QUEUED
> ata3.00: cmd 61/08:00:60:6d:0e/00:00:00:00:00/40 tag 0 ncq 4096 out
> res 40:00:f4:00:00:00/00:00:00:00:00/40 Emask 0x4 (timeout)
> ata 3.00: status: {DRDY}
> ata3: COMRESET failed (errno=-16)
> end_request: I/O error, dev sdb, sector xxxxxx
> bcache: bch_count_io_error() sdb:
> IO error on writing btree, recovering
> I/O error, dev sdb, sector xxxxxx
> ...
> 
> And keeps pausing and showing messages...
> 
> I wish that this info helps to find a solution...

Hrm, wonder what's causing the IO errors...

I did fix the reboot notifier the other day, can you try either my
bcache-for-3.10 or bcache-for-3.11 branches? That should fix shutdown
and reboot.

Suspend and hibernate should be fixed in the for-3.11 branch, but I
think I'll need to backport a freezer fix for it to work in 3.10...