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Message-ID: <AANLkTik=ivDrBEzg1wQAp5AFzNtRRq1=NpvnowggU=_0@mail.gmail.com> Date: Thu, 9 Dec 2010 14:38:00 -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 2:13 PM, Ted Ts'o <tytso@....edu> wrote: > On Thu, Dec 09, 2010 at 12:10:58PM -0600, Jon Nelson wrote: >> >> You should be OK, there. Are you using encryption or no? >> I had difficulty replicating the issue without encryption. > > Yes, I'm using encryption. LUKS with aes-xts-plain-sha256, and then > LVM on top of LUKS. Hmm. The cipher is listed as: aes-cbc-essiv:sha256 >> > 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. > > Ah, I'm not using virtualization. I'm running on a X410 laptop, on > raw hardware. Perhaps virtualization slows things down enough that it > triggers? Or maybe you're running with a more constrained memory than > I? How much memory do you have configured in your VM? 512MB. 'free' reports 75MB, 419MB free. I originally noticed the problem on really real hardware (thinkpad T61p), however. -- 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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