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Date: Thu, 28 Mar 2013 15:43:48 -0400 From: Jeff Darcy <jdarcy@...hat.com> To: Anand Avati <anand.avati@...il.com> CC: "J. Bruce Fields" <bfields@...ldses.org>, Eric Sandeen <sandeen@...hat.com>, linux-nfs@...r.kernel.org, "Theodore Ts'o" <tytso@....edu>, Zach Brown <zab@...hat.com>, Bernd Schubert <bernd.schubert@...m.fraunhofer.de>, linux-ext4@...r.kernel.org, gluster-devel@...gnu.org Subject: Re: [Gluster-devel] regressions due to 64-bit ext4 directory cookies On 03/28/2013 02:49 PM, Anand Avati wrote: > Yes, it should, based on the theory of how ext4 was generating the > 63bits. But Jeff's test finds that the experiment is not matching the > theory. FWIW, I was able to re-run my test in between stuff related to That Other Problem. What seems to be happening is that we read correctly until just after d_off 0x4000000000000000, then we suddenly wrap around - not to the very first d_off we saw, but to a pretty early one (e.g. 0x0041b6340689a32e). This is all on a single brick, BTW, so it's pretty easy to line up the back-end and front-end d_off values which match perfectly up to this point. I haven't had a chance to ponder what this all means and debug it further. Hopefully I'll be able to do so soon, but I figured I'd mention it in case something about those numbers rang a bell. -- 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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