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From: Liu Bo <bo.li.liu@oracle.com>
To: Kenny MacDermid <kenny.macdermid@gmail.com>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: btrfs issues in 3.14
Date: Thu, 8 May 2014 10:48:04 +0800	[thread overview]
Message-ID: <20140508024803.GA3407@localhost.localdomain> (raw)
In-Reply-To: <CAEVbaUcV-M9jnwR4ii3zR6RrbfpCtMmYAmhp8O01T4T6jJQN4A@mail.gmail.com>

On Wed, May 07, 2014 at 09:35:06AM -0300, Kenny MacDermid wrote:
> On Tue, May 6, 2014 at 11:22 PM, Liu Bo <bo.li.liu@oracle.com> wrote:
> >
> > What does sysrq+w say when the hang happens?
> 
> The whole system isn't hung, I may have explained that wrong. The
> system will hang if I try to shutdown, and the process will hang if I
> try to kill -9 it.
> 
> It looks like the browser is in this state currently so I did an 'echo
> w >/proc/sysrq-trigger' and have attached the full dmesg with the
> browser issues and the output.

Those stacks show the blocked tasks are waiting for a page's writeback, but
they don't show what blocks the endio process of that page.

I'd recommand you to try the lastest 3.15.0-rc4 or btrfs-next, as many fixes
are merged during this period.

thanks,
-liubo

  parent reply	other threads:[~2014-05-08  2:48 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-06 23:49 btrfs issues in 3.14 Kenny MacDermid
2014-05-07  2:22 ` Liu Bo
2014-05-07 12:35   ` Kenny MacDermid
2014-05-07 13:13     ` Kenny MacDermid
2014-05-08  2:48     ` Liu Bo [this message]
2014-05-08 13:51       ` Kenny MacDermid
2014-05-09 10:54         ` Liu Bo

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