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Message-ID: <150c16850912101543q231fb703u130c9e646289a8fe@mail.gmail.com> Date: Thu, 10 Dec 2009 15:43:06 -0800 From: Justin Maggard <jmaggard10@...il.com> To: ext4 development <linux-ext4@...r.kernel.org> Subject: Re: System hang with EXT4 On Wed, Dec 9, 2009 at 5:23 PM, Justin Maggard <jmaggard10@...il.com> wrote: > On Tue, Dec 8, 2009 at 7:18 AM, Jan Kara <jack@...e.cz> wrote: >> Can you still switch consoles after the system hangs (it's good to >> debug this on a text console)? If yes, could you press Alt-Sysrq-w and >> take a picture of the console by digital camera or so (take pictures of >> as many screens as possible using console scrollback)? Thanks. > > Thanks for the response. Console scrollback doesn't seem to work for > me in that mode. I tried it three times. Two of the times the list > was empty. The other time, the screen just listed a bunch of rm > processes. I have a little more information to add. After noticing the recent "Fix potential quota deadlock" patch on the mailing list, I figured it would be worth a shot to try it without quotas enabled. This also avoids the system hang. I tried applying that patch, but still had the same symptoms using that kernel. So I'm seeing a consistent system hang with ext4 when delalloc and quotas are enabled on an SMP system. With either quotas or delalloc disabled, it doesn't hang. Both enabled on a single processor system also doesn't hang. -Justin -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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