From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Sterba <dave@jikos.cz>
Subject: Re: kernel BUG at fs/btrfs/delayed-inode.c:1466!
Date: Fri, 9 Mar 2012 15:54:06 +0100
Message-ID: <20120309145406.GL4334@twin.jikos.cz>
References: <CADDYkjQHvmfhmsdt7K0O74DZK6BVqxPaWh_jEi8uJ_HBEz-QhQ@mail.gmail.com> <20120308155211.GF4334@twin.jikos.cz> <CADDYkjTG-q5+pFRFt9sGKq=cgL=ZgQaNZV=2ipBsSbuvxCa3jw@mail.gmail.com> <4F595D6D.6080809@cn.fujitsu.com> <20120309105537.GG4334@twin.jikos.cz> <CADDYkjRcRbxxPErdMBOs55-gNHZA0GfxcsWNrVbAuv37b3rtvw@mail.gmail.com> <20120309114010.GH4334@twin.jikos.cz> <CADDYkjQiMpPHLq4NTe5yo1iZfCgtwTgm+3ZDRUdMACpumsdFqw@mail.gmail.com> <CADDYkjRK3h_e3GPDQMpVwSwn6aQ5MwA1FoF1wFV05=LytK3chg@mail.gmail.com>
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Cc: dave@jikos.cz, Liu Bo <liubo2009@cn.fujitsu.com>,
	linux-btrfs <linux-btrfs@vger.kernel.org>,
	LKML <linux-kernel@vger.kernel.org>, josef@redhat.com
To: Jacek Luczak <difrost.kernel@gmail.com>
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On Fri, Mar 09, 2012 at 03:33:24PM +0100, Jacek Luczak wrote:
> > Those two issues go inline. After a longer while of WARN_ON the BUG_ON
> > hit again.
> 
> One more observation. Host is running builds from CI system. After
> BUG_ON pop up all builds take 50% more time to complete.

After a BUG_ON the system is in an inconsistent state and will
misbehave.

> Also I see that current load average stall at value of 7 even if host
> is completely idle.

That's probably because some process is stuck in a D-state after the
crash.


david