From: Jens Axboe <axboe@suse.de>
To: Olaf Hering <olh@suse.de>
Cc: Andrey Borzenkov <arvidjaar@mail.ru>,
Andries Brouwer <aebr@win.tue.nl>, Greg KH <greg@kroah.com>,
linux-hotplug-devel@lists.sourceforge.net,
linux-kernel@vger.kernel.org
Subject: Re: removable media revalidation - udev vs. devfs or static /dev
Date: Wed, 07 Jan 2004 09:59:22 +0000 [thread overview]
Message-ID: <20040107095922.GY3483@suse.de> (raw)
In-Reply-To: <20040107095632.GA22213@suse.de>
On Wed, Jan 07 2004, Olaf Hering wrote:
> On Wed, Jan 07, Jens Axboe wrote:
>
> > No need to put it in the kernel, user space fits the bil nicely. I don't
> > see how this would lead to IO errors?
>
> Ok, how should it be done on my SCSI and parallel port ZIP? An ATAPI ZIP
> with 2.4 behaves like that:
>
>
> nectarine:~ # blockdev --rereadpt /dev/hdd
> /dev/hdd: Eingabe-/Ausgabefehler
> nectarine:~ # dmesg | tail
> nfs: server Hilbert2 OK
> nfs: server Hilbert3 not responding, still trying
> nfs: server Hilbert3 OK
> nfs: server Hilbert3 not responding, still trying
> nfs: server Hilbert3 OK
> nfs: server Hilbert2 not responding, still trying
> nfs: server Hilbert2 OK
> ide-floppy: hdd: I/O error, pc = 0, key = 2, asc = 3a, ascq = 0
> ide-floppy: hdd: I/O error, pc = 1b, key = 2, asc = 3a, ascq = 0
> hdd: No disk in drive
> nectarine:~ # cat /proc/ide/hdd/model
> IOMEGA ZIP 100 ATAPI
Two problems here. First, ide-floppy should not verbosely fail these
commands (2/3a/00 is 'medium not present'). Second, you are not using
the proper mechanism to detect media events.
> I have not checked 2.6, but I doubt it is smarter.
I doubt ide-floppy behaves any differently. But at least you can send
packet commands generically to any atapi/scsi device in 2.6, so the code
has a chance to work a bit more generically (without tons of ugly and
different ioctls for each device type).
--
Jens Axboe
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next prev parent reply other threads:[~2004-01-07 9:59 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-01 20:33 removable media revalidation - udev vs. devfs or static /dev Andrey Borzenkov
2004-01-03 5:58 ` Greg KH
2004-01-03 8:51 ` Andrey Borzenkov
2004-01-03 12:37 ` Andries Brouwer
2004-01-03 12:42 ` Olaf Hering
2004-01-03 16:05 ` Andrey Borzenkov
2004-01-03 17:54 ` Jens Axboe
2004-01-07 9:43 ` Olaf Hering
2004-01-07 9:50 ` Jens Axboe
2004-01-07 9:56 ` Olaf Hering
2004-01-07 9:59 ` Jens Axboe [this message]
2004-01-07 10:25 ` Olaf Hering
2004-01-07 10:31 ` Jens Axboe
2004-01-07 10:47 ` Andrey Borzenkov
2004-01-07 10:54 ` Jens Axboe
2004-01-07 17:56 ` Greg KH
2004-01-30 12:59 ` Olaf Hering
2004-01-07 11:00 ` Andrey Borzenkov
2004-01-07 11:05 ` Jens Axboe
2004-01-07 11:14 ` Andrey Borzenkov
2004-01-07 11:16 ` Jens Axboe
2004-01-03 20:51 ` Greg KH
2004-01-07 18:38 ` Linus Torvalds
2004-01-07 18:57 ` Greg KH
2004-01-07 19:23 ` Mika Penttilä
2004-01-07 19:24 ` Greg KH
2004-01-07 19:31 ` Mika Penttilä
2004-01-08 1:38 ` Linus Torvalds
2004-01-07 19:31 ` Linus Torvalds
2004-01-07 19:50 ` Greg KH
2004-01-07 20:25 ` Richard Troth
2004-01-07 23:34 ` Greg KH
2004-01-08 0:32 ` Martin J. Bligh
2004-01-08 0:41 ` Greg KH
2004-01-08 1:07 ` Martin J. Bligh
2004-01-08 1:15 ` Greg KH
2004-01-08 1:50 ` Martin J. Bligh
2004-01-08 1:48 ` Linus Torvalds
2004-01-08 0:42 ` viro
2004-01-08 1:16 ` Greg KH
2004-01-09 3:36 ` Joel Becker
2004-01-07 20:52 ` Olaf Hering
2004-01-08 2:03 ` Linus Torvalds
2004-01-08 4:16 ` Gene Heskett
2004-01-08 4:23 ` Linus Torvalds
2004-01-08 7:45 ` Olaf Hering
2004-01-08 2:13 ` Andries Brouwer
2004-01-08 2:19 ` Linus Torvalds
2004-01-08 2:49 ` Andries Brouwer
2004-01-08 2:56 ` Linus Torvalds
2004-01-08 3:35 ` Andries Brouwer
2004-01-08 3:43 ` Linus Torvalds
2004-01-08 8:00 ` Xavier Bestel
2004-01-09 0:28 ` Robert Love
2004-01-09 0:52 ` Linus Torvalds
2004-01-09 1:16 ` Matt Mackall
2004-01-08 14:06 ` "Andrey Borzenkov"
2004-01-12 9:09 ` Ling, Xiaofeng
2004-03-29 15:39 ` Greg KH
2004-03-29 15:39 ` Andrey Borzenkov
2004-03-29 15:40 ` Andries Brouwer
2004-03-29 15:40 ` Olaf Hering
2004-03-29 15:40 ` Andrey Borzenkov
2004-03-29 15:40 ` Jens Axboe
2004-03-29 15:40 ` Greg KH
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