From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 14583] SSD system stall, HSM Violation
Date: Thu, 12 Nov 2009 20:11:17 GMT
Message-ID: <200911122011.nACKBHmE006225@demeter.kernel.org>
References: <bug-14583-11633@http.bugzilla.kernel.org/>
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http://bugzilla.kernel.org/show_bug.cgi?id=14583





--- Comment #11 from Tejun Heo <tj@kernel.org>  2009-11-12 20:11:02 ---
It looks like the device is buggy and fails from time to time without raising
interrupt.  libata waits till the timeout comes whenever that happens and thus
the 30sec long stutters.  This is basically caused by crappy hardware.  The
only workaround is to poll for the failure as irqpoll does.  For now, I think
you'll have to live with irqpoll.  In the long run, we'll probably need to add
automatic polling execution for the hardare.  Can you please attach the output
of "hdparm -I /dev/sda"?

Thanks.

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