From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?ISO-8859-2?Q?Marcin_Miros=B3aw?= Subject: Re: Re: [b.g.o.358549] blkfront: Move blkif_interrupt into a tasklet. Date: Fri, 06 May 2011 00:57:23 +0200 Message-ID: <4DC32B53.8010903@mejor.pl> References: <4DC15DC8.2010302@mejor.pl> <20110505212245.GA14953@dumpdata.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-2 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20110505212245.GA14953@dumpdata.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Konrad Rzeszutek Wilk Cc: kernel@gentoo.org, Jeremy Fitzhardinge , xen-devel@lists.xensource.com, daniel.stodden@citrix.com List-Id: xen-devel@lists.xenproject.org W dniu 2011-05-05 23:22, Konrad Rzeszutek Wilk pisze: > On Wed, May 04, 2011 at 04:08:08PM +0200, Marcin Miros=B3aw wrote: >> Hello! >> I'm hitted by issue described there: >> http://lists.xensource.com/archives/html/xen-devel/2010-09/msg00164.ht= ml >> . I'm using 32bit guest (no SMP) on 64 xen-server. On hardened-kernel >> (grsec)-2.6.{35,36} there is silence in dmesg (i don't remember what w= as >> going on on earlier kernels). On hardened-kernel-2.6.{37,38} and on >> vanilla-kernel-2.6.{37,38,39} and git-sources-2.6.39_rc5-r7 problem ex= ists. >=20 > Do you always get this when you try to mount a filesystem with > barriers? And do you see this _only_ with 32-bit guests, but not with 6= 4-bit ones? I'm not admin of Dom0, i've got only one vm (with PV enabled), which is 32 bit. I didn't try to start them with 64 bit kernel (and 32 bit userland), do you think it's worth to try it? I don't force barrier in fstab, on kernel hardened-2.6.36 (which doesn't throws warnings), /proc/mounts shows barrier=3D1, there is in dmesg: [...] [ 0.209834] Initialising Xen virtual ethernet driver. [ 0.217792] blkfront: xvda: barriers enabled (tag) [...] On vanilla-2.6.39-rc5-git7 i've got in log: [ 6.505772] blkfront: xvda: empty write barrier op failed [ 6.505776] blkfront: xvda: barriers disabled (I hope i didn't omit important part from dmesg, i didn't want to paste tons of line) Regards.