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Date: Sun, 07 Dec 2014 14:36:19 +0300
From: Lev Serebryakov <lev@FreeBSD.org>
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To: Wojciech Puchar <wojtek@puchar.net>, 
 FreeBSD Hackers <freebsd-hackers@freebsd.org>
Subject: Re: 10.1-STABLE one week old from svn - random hangs
References: <alpine.BSF.2.11.1412071035550.697@laptop>
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On 07.12.2014 12:40, Wojciech Puchar wrote:

> The problem. At random moment system I/O stops. If you are running
> top at this moment, there are lots of prosesses stalled in vnread
> or biord. network keeps running, processes that doesn't need I/O
> still runs.
> 
> top often reports at least 10MB free memory.
> 
> seems like a deadlock. Anyone know that problem. How to trace it
> down?
 Looks like I have same problem sometimes.  And you could not run any
new process, you could not login on console, but you could switch
virtual consoles & if "top" is running on one of them, it doesn't hang
itself, right?

 I get this typically when "svnsync" synchronize my local FreeBSD repo
mirror and after that FS (UFS2 with SUJ) with my repo is heavily damaged.

- -- 
// Lev Serebryakov AKA Black Lion
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