From mboxrd@z Thu Jan 1 00:00:00 1970 From: Heiko Wundram Subject: Re: bcache hangs with continuous write I/O to SSD device, bcache device stops working Date: Wed, 27 Mar 2013 20:17:42 +0100 Message-ID: <515345D6.1060803@modelnine.org> References: <514C4FC1.6090804@modelnine.org> <20130322141613.GA29496@gmail.com> <514C687C.4010304@modelnine.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <514C687C.4010304-EqIAFqbRPK3NLxjTenLetw@public.gmane.org> Sender: linux-bcache-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: linux-bcache-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-bcache@vger.kernel.org Am 22.03.2013 15:19, schrieb Heiko Wundram: > In my case, the syncing was still going on after around 16 hours (I > simply let the system run after it got locked in this state). As I've > only got around 2GB of page cache in the corresponding system that was > used as the test bed, most probably, the system wasn't (still) flushing > data, but rather spinning on something else. I'm not entirely sure what difference I made, but it seems that this problem has disappeared (hasn't surfaced over the last three days, whereas before it was a matter of hours). I've updated the kernel to statically contain bcache and the DM/md infrastructure (which should be unrelated, except for being part of a stack of block devices). Anyway, that seems to have done the trick, in case anybody else is experiencing this. -- --- Heiko.