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Message-ID: <AANLkTimAUB5L5Ptm4Fv=sQUmL9_P5azPRCKQnmU89xs8@mail.gmail.com> Date: Thu, 9 Dec 2010 12:10:58 -0600 From: Jon Nelson <jnelson@...poni.net> To: "Ted Ts'o" <tytso@....edu>, Jon Nelson <jnelson@...poni.net>, Mike Snitzer <snitzer@...hat.com>, Chris Mason <chris.mason@...cle.com>, Matt <jackdachef@...il.com>, Milan Broz <mbroz@...hat.com>, Andi Kleen <andi@...stfloor.org>, linux-btrfs <linux-btrfs@...r.kernel.org>, dm-devel <dm-devel@...hat.com>, Linux Kernel <linux-kernel@...r.kernel.org>, htd <htd@...cy-poultry.org>, htejun@...il.com, linux-ext4@...r.kernel.org Subject: Re: hunt for 2.6.37 dm-crypt+ext4 corruption? (was: Re: dm-crypt barrier support is effective) On Thu, Dec 9, 2010 at 12:01 PM, Ted Ts'o <tytso@....edu> wrote: > On Tue, Dec 07, 2010 at 09:37:20PM -0600, Jon Nelson wrote: >> One difference is the location of the transaction logs (pg_xlog). In >> my case, /var/lib/pgsql/data *is* mountpoint for the test volume >> (actually, it's a symlink to the mount point). In your case, that is >> not so. Perhaps that makes a difference? pgsql_tmp might also be on >> two different volumes in your case (I can't be sure). > > I just tried tried to run t.sql five times with /var/lib/postgres as a > mountpoint for a 5400 rpm disk, and I still haven't been able to > replicate it. You should be OK, there. Are you using encryption or no? I had difficulty replicating the issue without encryption. > If you can point out how to query pgsql_tmp (I'm using a completely > default postgres install), that would be helpful, but I don't think it > would be going anywhere else. Normally it's /var/lib/pgsql/data/pgsql_tmp (or /var/lib/postgres/data/pgsql_tmp in your case). By placing /var/lib/{postgresql,pgsql}/data on the LUKS + ext4 volume, on both openSUSE 11.3 and Kubuntu, I was able to replicate the problem easily, in VirtualBox. I can give qemu a try. In both cases I was using a 2.6.37x kernel. -- Jon -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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