From: Matthias Prager <linux@matthiasprager.de>
To: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Tejun Heo <tj@kernel.org>, Robert Trace <maillist@farcaster.org>,
linux-scsi@vger.kernel.org, Jens Axboe <jaxboe@fusionio.com>,
Eric Moore <Eric.Moore@lsi.com>, Alan <alan@lxorguk.ukuu.org.uk>,
"Darrick J. Wong" <djwong@us.ibm.com>,
linux-ide@vger.kernel.org,
Matthias Prager <linux@matthiasprager.de>
Subject: Re: 'Device not ready' issue on mpt2sas since 3.1.10
Date: Thu, 26 Jul 2012 01:56:49 +0200 [thread overview]
Message-ID: <501087C1.2020209@matthiasprager.de> (raw)
In-Reply-To: <1343246155.12094.59.camel@dabdike>
Hello James,
Am 25.07.2012 21:55, schrieb James Bottomley:>
> It looks like a hack like this might be needed.
>
> James
>
<SNIP>
I don't yet understand all the code but I'm following your discussion
with Tejun: I've set up a minimal vm running gentoo with a mpt2sas
driven controller in passthrough mode. I've applied your proposed patch
against the vanilla 3.5.0 kernel (which includes Tejun's commit), and
I'm happy to report the problem does seem to get fixed by it.
Well at least sending the sata drive in standby using 'hdparm -y' now
works (according to 'hdparm -C') without these nasty i/o errors on later
i/o. That is to say the drive wakes up again (e.g. from a 'fdisk -l
/dev/sda' command) and returns data.
--
Matthias
next prev parent reply other threads:[~2012-07-25 23:57 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-22 11:19 'Device not ready' issue on mpt2sas since 3.1.10 Matthias Prager
2012-07-09 14:40 ` Matthias Prager
2012-07-09 19:37 ` Robert Trace
2012-07-09 20:45 ` Darrick J. Wong
2012-07-09 22:24 ` Robert Trace
2012-07-10 0:21 ` Matthias Prager
2012-07-10 1:56 ` Robert Trace
2012-07-10 16:54 ` Darrick J. Wong
2012-07-10 0:12 ` Matthias Prager
2012-07-10 1:51 ` Robert Trace
2012-07-10 23:27 ` Robert Trace
2012-07-11 12:19 ` Matthias Prager
2012-07-11 13:48 ` Matthias Prager
2012-07-17 18:09 ` Tejun Heo
2012-07-17 19:39 ` Matthias Prager
2012-07-17 20:01 ` Tejun Heo
2012-07-21 12:15 ` Matthias Prager
2012-07-22 17:31 ` Tejun Heo
2012-07-22 23:14 ` Matthias Prager
2012-07-23 15:26 ` Tejun Heo
2012-07-24 22:04 ` Matthias Prager
2012-07-25 10:26 ` Reddy, Sreekanth
2012-07-25 14:19 ` James Bottomley
2012-07-25 17:17 ` Tejun Heo
2012-07-25 19:55 ` James Bottomley
2012-07-25 23:56 ` Matthias Prager [this message]
2012-07-26 19:16 ` Robert Trace
2012-08-16 18:26 ` Robert Trace
2012-08-16 20:24 ` Matthias Prager
2012-08-16 20:33 ` Robert Trace
2012-07-25 22:35 ` tomm
2012-07-26 19:20 ` Robert Trace
2012-07-09 22:08 ` NeilBrown
2012-07-10 0:03 ` Matthias Prager
-- strict thread matches above, loose matches on Subject: below --
2015-11-27 10:28 Felix Matouschek
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