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From: Tejun Heo <htejun@gmail.com>
To: Mark Lord <liml@rtr.ca>
Cc: Jeff Garzik <jgarzik@pobox.com>,
	IDE/ATA development list <linux-ide@vger.kernel.org>,
	Alan Cox <alan@redhat.com>
Subject: Re: ata_std_qc_defer not good enough for FIS-based switching ?
Date: Thu, 15 May 2008 15:51:59 +0900	[thread overview]
Message-ID: <482BDD8F.7060506@gmail.com> (raw)
In-Reply-To: <482AFCFA.40708@rtr.ca>

Mark Lord wrote:
> Mark Lord wrote:
>> ..
>> At the moment, I have the Sil PM plugged in, and it all behaves nicely.
>> The previous failure was with the Marvell PM, so I'll hook that up next
>> and retest with it.
> ..
> 
> It went bonkers again.  This is with 2.6.25.
> I'll build 2.6.26-git and try again with that shortly.
> 
> One thing about sata_sil24 --> it *really* doesn't like to handle
> hotplug events while in the midst of EH.
> 
> I unplugged the host cable from the PM, and the EH just kept on
> going and going.
> 
> I then unplugged the sata_sil24 PCIe host adapter card,
> and it still took quite some time to give up on the Energizer Bunny 
> routine.  :)

Heh... The retry count on the host side when PMP is attached is set 
higher because losing the PMP means losing all devices beyond it.  I 
agree it would be better to add a total time limit there tho.

Thanks.

-- 
tejun

  parent reply	other threads:[~2008-05-15  6:52 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-04-28 21:06 ata_std_qc_defer not good enough for FIS-based switching ? Mark Lord
2008-04-28 22:08 ` Mark Lord
2008-04-28 23:11   ` Tejun Heo
2008-04-28 23:42     ` Mark Lord
2008-04-29  1:18       ` Tejun Heo
2008-04-29  2:26         ` Mark Lord
2008-05-14 14:11           ` Tejun Heo
2008-05-14 14:45             ` Mark Lord
2008-05-14 14:53               ` Mark Lord
2008-05-14 15:50                 ` Mark Lord
2008-05-14 15:59                   ` Mark Lord
2008-05-15  7:12                     ` Tejun Heo
2008-05-15  6:51                 ` Tejun Heo [this message]
2008-04-29 17:09     ` Mark Lord
2008-04-29 17:17       ` Mark Lord
2008-04-30  9:38       ` Tejun Heo
2008-04-30 14:02       ` Mark Lord

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