From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kent Overstreet Subject: Re: bcache, layered block devices and unclean shutdowns Date: Thu, 4 Oct 2012 12:51:30 -0700 Message-ID: <20121004195130.GB29494@google.com> References: <20121004103625.GD17229@narnia.kingsly.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20121004103625.GD17229-Z3X8UqLNtc1Swagx7F3lBaxOck334EZe@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 On Thu, Oct 04, 2012 at 04:06:25PM +0530, Kingsly John wrote: > Hi! > > In the archives I found a thread from a few months ago where it was > recommended that it's best to use bcache on the RAID layer.(rather than the > disks themselves or LVM) > > Wouldn't this affect bcache's ability to recover from an unclean shutdown? > ie, if the raid array itself can't be brought up, bcache wouldn't be able to > write caches to disk? (Or is that not a possibility) Not sure what you're asking...