From: Oliver Neukum <oliver@neukum.org>
To: James Bottomley <James.Bottomley@SteelEye.com>
Cc: Mark Lord <lsml@rtr.ca>, Anton Blanchard <anton@samba.org>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
SCSI Mailing List <linux-scsi@vger.kernel.org>
Subject: Re: Core scsi layer crashes in 2.6.8.1
Date: Tue, 5 Oct 2004 17:49:14 +0200 [thread overview]
Message-ID: <200410051749.22245.oliver@neukum.org> (raw)
In-Reply-To: <1096988167.2064.7.camel@mulgrave>
Am Dienstag, 5. Oktober 2004 16:56 schrieb James Bottomley:
> On Tue, 2004-10-05 at 09:44, Mark Lord wrote:
> > There seem to be other holes/races in this and related code.
> >
> > The QStor driver implements hot insertion/removal of drives.
> >
> > One thing it has to cope with at present is, after notifying
> > the mid-layer that a drive has been removed, the mid-layer calls
> > back with a synchronize-cache command for that drive..
>
> This is expected behaviour. For orderly removal an cache sync command
> must be sent to drives with a writeback cache before they're powered
> down. For forced ejection, the driver has to error the command.
Then let the driver tell the upper layers whether the device is still
connected or not.
Regards
Oliver
next prev parent reply other threads:[~2004-10-05 15:49 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-28 20:03 Core scsi layer crashes in 2.6.8.1 Alan Cox
2004-09-29 14:11 ` James Bottomley
2004-09-29 13:24 ` Alan Cox
2004-09-29 14:34 ` James Bottomley
2004-09-29 14:27 ` Matthew Wilcox
2004-10-05 11:49 ` Anton Blanchard
2004-10-05 13:56 ` James Bottomley
2004-10-05 14:44 ` Mark Lord
2004-10-05 14:56 ` James Bottomley
2004-10-05 15:46 ` Mark Lord
2004-10-05 15:49 ` Oliver Neukum [this message]
2004-10-05 15:54 ` James Bottomley
2004-10-05 15:57 ` Mark Lord
2004-10-05 16:01 ` James Bottomley
2004-10-05 16:53 ` Jeff Garzik
2004-10-05 16:01 ` Oliver Neukum
2004-10-05 16:07 ` James Bottomley
2004-10-05 16:26 ` Oliver Neukum
2004-10-05 16:38 ` James Bottomley
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