From: James Bottomley <James.Bottomley@SteelEye.com>
To: "Zhao, Forrest" <forrest.zhao@intel.com>
Cc: SCSI Mailing List <linux-scsi@vger.kernel.org>
Subject: Re: Proposal to add a new sysfs attribute to SCSI device
Date: Wed, 23 Mar 2005 10:36:04 -0600 [thread overview]
Message-ID: <1111595764.5441.29.camel@mulgrave> (raw)
In-Reply-To: <8126E4F969BA254AB43EA03C59F44E8401A88416@pdsmsx404>
On Tue, 2005-03-22 at 11:05 +0800, Zhao, Forrest wrote:
> Let me tell you the testing experience in our lab:
> 1 we install kernel 2.6.11.2 on a Tiger4 platform,
> 2 there're two SCSI disks, one is sda for root fs, the other is sdb for
> /mnt
> 3 execute "cp -r /usr/src/linux-2.6.11.2 /mnt"
> 4 during the process of copying, we surprise-removed sdb
> 5 then system become very busy and freezing, even the user can't login
> into the system whether locally or remotely
> 6 the error output on the screen demonstrates that SCSI mid-layer is
> endless retrying the failed I/O requests
Which HBA driver is this? As long as the HBA can recognise the device
is missing, the retries should go very fast because it's simply a bounce
between the eh thread and the driver.
James
prev parent reply other threads:[~2005-03-23 16:36 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-22 3:05 Proposal to add a new sysfs attribute to SCSI device Zhao, Forrest
2005-03-23 16:36 ` James Bottomley [this message]
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