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Message-ID: <20111118163120.GM22037@openwall.com>
Date: Fri, 18 Nov 2011 20:31:20 +0400
From: "(GalaxyMaster)" <galaxy@...nwall.com>
To: owl-dev@...ts.openwall.com
Subject: Re: kernel update? ext4 issues
Solar,
On Fri, Nov 18, 2011 at 08:18:18PM +0400, Solar Designer wrote:
> Ouch. I doubt that you were hit by this specific bug. Can you provide
> more detail on the symptoms? Did you have a file of almost exactly 4 GB?
Yes, this is the case. The file was InnoDB tablespace and was 4GB. I'm
quite confident that I encountered the mentioned bug. The symptoms were
that the server became unreachable by ssh and it's console was saying
that ext4 code failed to allocate a block (this was in a loop).
Unfortunately, I don't recall the exact error message, but when I
investigated that I was quite sure that the crash was the result of the
bug I mentioned in the original post.
> What kernel version were you running?
CentOS 2.6.18-274.3.1.el5xen (but IIUC it's the same ext4 code as the
kernel we have in Owl).
> (There were ext4 fixes before
> -274 as well, so maybe the bug that you hit is already fixed in our
> current kernel.)
RH fixed a lot of off by 1 ext4 issues in 274.4.1, so I doubt that our
kernel contains them.
--
(GM)
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