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Re: xfs deadlock on buffer semaphore while reading directory

To: Linda Walsh <xfs@xxxxxxxxx>
Subject: Re: xfs deadlock on buffer semaphore while reading directory
From: Stan Hoeppner <stan@xxxxxxxxxxxxxxxxx>
Date: Sun, 03 Feb 2013 10:42:26 -0600
Cc: xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <510E054B.2070500@xxxxxxxxx>
References: <20130202192007.GS30577@xxxxxxxxxxxxxxxxxx> <510D6EDE.1080409@xxxxxxx> <510E054B.2070500@xxxxxxxxx>
Reply-to: stan@xxxxxxxxxxxxxxxxx
User-agent: Mozilla/5.0 (Windows NT 5.1; rv:17.0) Gecko/20130107 Thunderbird/17.0.2
On 2/3/2013 12:35 AM, Linda Walsh wrote:

> Odd thing about my current probs -- my current system has been
> up 12 days...but before that it had been up 43 days...

Linux greer 3.2.6 #1 SMP Mon Feb 20 17:05:10 CST 2012 i686 GNU/Linux
 10:13:13 up 339 days, 22:42,  1 user,  load average: 0.06, 0.06, 0.05

This is a hand rolled 'minimalist' kernel with the old SLAB allocator,
no modules, Debian 6 atop.  Just over 11 months of flawless operation,
though load is probably much lighter than on your system.

> I can't get the buffers to 'free' no matter what
> echo 3> /proc/sys/vm/drop_caches does nothing.

That's interesting.

> so I may be rebooting soon...

Did you roll this 3.7.1 yourself?  I'm wondering if you did something
wonky in your config that's causing or contributing to your problems.


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