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From: Oliver Neukum <oliver@neukum.org>
To: Mike Anderson <andmike@us.ibm.com>,
	James Bottomley <James.Bottomley@steeleye.com>
Cc: Matthew Dharm <mdharm-scsi@one-eyed-alien.net>,
	mochel@osdl.org, SCSI Mailing List <linux-scsi@vger.kernel.org>
Subject: Re: [PATCH] scsi_set_host_offline (resend)
Date: Sat, 29 Mar 2003 20:24:08 +0100	[thread overview]
Message-ID: <200303292024.08893.oliver@neukum.org> (raw)
In-Reply-To: <20030329190407.GA1483@beaverton.ibm.com>

Am Samstag, 29. März 2003 20:04 schrieb Mike Anderson:
> James Bottomley [James.Bottomley@steeleye.com] wrote:
> > On Fri, 2003-03-28 at 19:32, Matthew Dharm wrote:
> > > Well, Linus wants this to work for usb-storage more short-term than
> > > long-term....
> >
> > Well, I think Mike's given us everything you need.  We can use the
> > set_device_offline to alter the remove-single-device path to offline the
> > device, wait for the returning I/Os to complete or error and then remove
> > the device.
> >
> > You can then trigger this from your hotplug scripts.
>
> I believe we still need to fixup scsi_remove_host to not fail (i.e
> return void) and call "hostt->release" when the ref count on the host

Yes, we cannot have a failure there.

> goes to zero. (I believe this was a point that started us on this thread
> of work as the usb implementation was one device per host).

Not necessarily. The USB driver cannot tell a simple device apart
from a SCSI<->USB bridge, which several SCSI devices can be
attached to. Hotplugging however is always on a host level with
USB storage.

	Regards
		Oliver

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  reply	other threads:[~2003-03-29 19:24 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-03-25 10:07 [PATCH] scsi_set_host_offline (resend) Mike Anderson
2003-03-25 17:37 ` James Bottomley
2003-03-25 18:45   ` Mike Anderson
2003-03-25 19:02     ` James Bottomley
2003-03-25 21:04       ` Patrick Mochel
2003-03-25 23:29       ` Mike Anderson
2003-03-27 15:42         ` James Bottomley
2003-03-29  0:31           ` Patrick Mansfield
2003-03-29  1:32           ` Matthew Dharm
2003-03-29  6:30             ` Mike Anderson
2003-03-29 14:43             ` James Bottomley
2003-03-29 19:04               ` Mike Anderson
2003-03-29 19:24                 ` Oliver Neukum [this message]
2003-03-29 20:53               ` Matthew Dharm
2003-03-29 21:54                 ` James Bottomley
2003-03-29 22:15                   ` Matthew Dharm
2003-03-30 16:23                     ` James Bottomley
2003-03-30 17:26                       ` Oliver Neukum
2003-04-09 20:30                         ` Luben Tuikov
2003-04-09 22:32                           ` Oliver Neukum
2003-04-09 22:59                             ` Luben Tuikov
2003-04-10  7:51                               ` Oliver Neukum
2003-04-17 22:29                                 ` Luben Tuikov
2003-03-30 18:21                       ` Matthew Dharm
2003-04-09 20:53                         ` Luben Tuikov
2003-03-29 22:50                   ` Oliver Neukum
2003-04-01  2:48                     ` Mike Anderson
2003-04-02  7:42                       ` Matthew Dharm
2003-04-03  2:05                         ` Mike Anderson

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