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Re: [Gluster-devel] regressions due to 64-bit ext4 directory cookies
From: |
Jeff Darcy |
Subject: |
Re: [Gluster-devel] regressions due to 64-bit ext4 directory cookies |
Date: |
Thu, 28 Mar 2013 15:43:48 -0400 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130311 Thunderbird/17.0.4 |
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.
- Re: [Gluster-devel] regressions due to 64-bit ext4 directory cookies, Bernd Schubert, 2013/03/26
- Re: [Gluster-devel] regressions due to 64-bit ext4 directory cookies, Eric Sandeen, 2013/03/26
- Re: [Gluster-devel] regressions due to 64-bit ext4 directory cookies, Theodore Ts'o, 2013/03/28
- Re: [Gluster-devel] regressions due to 64-bit ext4 directory cookies, Jeff Darcy, 2013/03/28
- Re: [Gluster-devel] regressions due to 64-bit ext4 directory cookies, Eric Sandeen, 2013/03/28
- Message not available
- Re: [Gluster-devel] regressions due to 64-bit ext4 directory cookies, Anand Avati, 2013/03/28
- Re: [Gluster-devel] regressions due to 64-bit ext4 directory cookies, J. Bruce Fields, 2013/03/28
- Re: [Gluster-devel] regressions due to 64-bit ext4 directory cookies, Anand Avati, 2013/03/28
- Re: [Gluster-devel] regressions due to 64-bit ext4 directory cookies,
Jeff Darcy <=
- Re: [Gluster-devel] regressions due to 64-bit ext4 directory cookies, Anand Avati, 2013/03/28
- Re: [Gluster-devel] regressions due to 64-bit ext4 directory cookies, Anand Avati, 2013/03/28
- Re: [Gluster-devel] regressions due to 64-bit ext4 directory cookies, Jeff Darcy, 2013/03/28