From: Nigel Cunningham <ncunningham@users.sourceforge.net>
To: Robin Rosenberg <roro.l@dewire.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: udev and devfs - The final word
Date: Thu, 08 Jan 2004 06:16:55 +1300 [thread overview]
Message-ID: <1073495815.2286.7.camel@laptop-linux> (raw)
In-Reply-To: <200401071439.03915.roro.l@dewire.com>
[-- Attachment #1: Type: text/plain, Size: 1868 bytes --]
Ah. Well if you've unmounted filesystems prior to suspending, I would
expect you should be fine. The device numbers might change - if they can
change between mounts - but that won't be any different because of
suspending. If you're talking about suspending with the file systems
mounted, that ought to work to (once the appropriate power management
support is done). If the user fails to reconnect the device before
resuming, they should expect the same problems that they would encounter
if they pulled it out without suspending. Of course I'm saying 'should'
a lot here. Let me use it one more time... in my mind at least, the fact
that we've suspended should be irrelevant to how things work.
Regards,
Nigel
On Thu, 2004-01-08 at 02:39, Robin Rosenberg wrote:
> måndagen den 5 januari 2004 13.39 skrev Nigel Cunningham:
> > Hi.
> >
> > The suspend to disk implementations all assume that devices are not
> > [dis]appearing under us while we're suspended. If you do go adding and
> > removing devices while the power is off, you can expect the same
> > problems you'd get if you removed them without suspending the machine.
> > It would be roughly equivalent to hot[un]plugging devices.
>
> Yes. It's very unclear unless you do mind reading, but I had in mind mounted filesystems
> such as /home on a USB stick or firewire Reasonable? yes! But such devices have to
> be rediscovered and allocated in such a way that the user can resume using the device
> as soon as it has been found. And it should not fail miserably if the user forgets to connect
> the device before resuming the machine. As you cannot unmount /home (usually) the
> kernel must remember the device somehow or make mounting file systems more loosely
> than today.
>
> -- robin
--
My work on Software Suspend is graciously brought to you by
LinuxFund.org.
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next prev parent reply other threads:[~2004-01-07 18:19 UTC|newest]
Thread overview: 169+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <18Cz7-7Ep-7@gated-at.bofh.it>
2003-12-31 3:05 ` udev and devfs - The final word Pascal Schmidt
2003-12-31 19:23 ` Greg KH
2003-12-31 20:19 ` Rob Love
2003-12-31 22:01 ` Nathan Conrad
2003-12-31 22:20 ` Rob Love
2003-12-31 21:45 ` Tommi Virtanen
2003-12-31 23:10 ` Rob Love
2003-12-31 21:52 ` Tommi Virtanen
2004-01-02 0:17 ` Hollis Blanchard
2004-01-02 0:36 ` viro
2004-01-03 6:04 ` Greg KH
2003-12-31 22:55 ` viro
2003-12-31 23:05 ` Rob Love
2003-12-31 23:48 ` Andreas Dilger
2004-01-07 10:15 ` Olaf Hering
2004-01-07 11:18 ` viro
2004-01-07 13:00 ` Olaf Hering
2004-01-07 13:26 ` viro
2004-01-07 13:27 ` Olaf Hering
2004-01-01 0:15 ` Andries Brouwer
2004-01-01 0:31 ` Rob Love
2004-01-01 12:34 ` Rob Landley
2004-01-01 15:22 ` Rob Love
2004-01-01 15:48 ` Andries Brouwer
2004-01-01 15:54 ` Rob Love
2004-01-02 20:42 ` Linus Torvalds
2004-01-03 3:00 ` Andries Brouwer
2004-01-03 4:46 ` Linus Torvalds
2004-01-03 13:10 ` Andries Brouwer
2004-01-03 22:27 ` Linus Torvalds
2004-01-03 23:08 ` Andries Brouwer
2004-01-04 1:16 ` Mark Mielke
2004-01-04 1:54 ` Valdis.Kletnieks
2004-01-04 18:44 ` Mark Mielke
2004-01-04 2:09 ` Linus Torvalds
2004-01-04 2:49 ` Andries Brouwer
2004-01-04 3:04 ` Linus Torvalds
2004-01-04 4:36 ` Pentium 4 HT SMP Ananda Bhattacharya
2004-01-04 5:55 ` Martin J. Bligh
2004-01-04 13:21 ` udev and devfs - The final word Andries Brouwer
2004-01-04 21:05 ` Linus Torvalds
2004-01-04 22:01 ` Andries Brouwer
2004-01-04 22:37 ` viro
2004-01-05 1:02 ` Mark Mielke
2004-01-05 2:24 ` Valdis.Kletnieks
2004-01-05 2:29 ` Andries Brouwer
2004-01-05 3:42 ` viro
2004-01-04 22:37 ` Helge Hafting
2004-01-04 23:35 ` Valdis.Kletnieks
2004-01-05 1:43 ` Jeremy Maitin-Shepard
2004-01-05 1:47 ` st_dev:st_ino (was: Re: udev and devfs - The final word) Mark Mielke
2004-01-05 2:02 ` st_dev:st_ino Jeremy Maitin-Shepard
2004-01-05 3:14 ` st_dev:st_ino viro
2004-01-05 1:58 ` udev and devfs - The final word viro
2004-01-05 2:12 ` Jeremy Maitin-Shepard
2004-01-05 2:52 ` Linus Torvalds
2004-01-05 3:06 ` David Lang
2004-01-05 3:48 ` Rob Landley
2004-01-05 4:52 ` Trond Myklebust
2004-01-05 7:03 ` [offtopic] " Rob Landley
2004-01-05 12:07 ` Trond Myklebust
2004-01-05 15:13 ` Mark Mielke
2004-01-05 16:36 ` Andreas Schwab
2004-01-05 22:18 ` Mark Mielke
2004-01-05 3:07 ` Daniel Jacobowitz
2004-01-05 3:33 ` Linus Torvalds
2004-01-05 3:50 ` viro
2004-01-05 4:02 ` Linus Torvalds
2004-01-05 4:38 ` viro
2004-01-05 4:52 ` Linus Torvalds
2004-01-05 6:11 ` viro
2004-01-05 7:47 ` Greg KH
2004-01-05 11:15 ` Vojtech Pavlik
2004-01-05 20:11 ` Theodore Ts'o
2004-01-05 21:06 ` Vojtech Pavlik
2004-01-05 22:22 ` Theodore Ts'o
2004-01-06 0:14 ` Rob Landley
2004-01-06 17:28 ` [OT] " Disconnect
2004-01-11 22:12 ` Ed L Cashin
2004-01-05 5:26 ` Eric W. Biederman
2004-01-05 7:39 ` Greg KH
2004-01-07 9:57 ` Pavel Machek
2004-01-05 12:27 ` Andries Brouwer
2004-01-05 16:13 ` Linus Torvalds
2004-01-05 17:29 ` Vojtech Pavlik
2004-01-05 17:33 ` Linus Torvalds
2004-01-05 17:52 ` Davide Libenzi
2004-01-05 18:03 ` Linus Torvalds
2004-01-05 18:09 ` Hugo Mills
2004-01-05 19:10 ` Paul Rolland
2004-01-05 19:52 ` Andries Brouwer
2004-01-05 20:38 ` Linus Torvalds
2004-01-05 22:17 ` Shawn
2004-01-05 22:25 ` Mark Mielke
2004-01-05 23:05 ` Shawn
2004-01-05 23:23 ` Shawn
2004-01-06 0:43 ` Greg KH
2004-01-06 0:53 ` Shawn
2004-01-05 23:13 ` Andries Brouwer
2004-01-05 23:32 ` Linus Torvalds
2004-01-06 0:59 ` viro
2004-01-06 1:17 ` Linus Torvalds
2004-01-06 4:28 ` viro
2004-01-06 5:07 ` Linus Torvalds
2004-01-06 1:06 ` Andries Brouwer
2004-01-06 15:00 ` Mark Mielke
2004-01-06 0:00 ` Greg KH
2004-01-06 1:41 ` Andries Brouwer
2004-01-07 17:14 ` Greg KH
2004-01-06 0:31 ` Rob Landley
2004-01-06 7:14 ` Vojtech Pavlik
2004-01-06 0:36 ` Silly udev script [was Re: udev and devfs - The final word] Greg KH
2004-01-05 7:44 ` udev and devfs - The final word James H. Cloos Jr.
2004-01-05 7:45 ` Nigel Cunningham
2004-01-05 11:01 ` Robin Rosenberg
2004-01-05 12:39 ` Nigel Cunningham
2004-01-05 14:31 ` IRQ disabled on linux 2.6.1-rc1-mm1 Mainak Mandal _00007001_
2004-01-07 13:39 ` udev and devfs - The final word Robin Rosenberg
2004-01-07 17:16 ` Nigel Cunningham [this message]
2004-01-05 9:06 ` Valdis.Kletnieks
2004-01-05 4:15 ` Peter Chubb
2004-01-05 4:42 ` Linus Torvalds
2004-01-03 18:34 ` Wrapping jiffies [was Re: udev and devfs - The final word] Pavel Machek
2004-01-01 19:43 ` udev and devfs - The final word Kai Henningsen
2004-01-02 7:26 ` Rob Landley
2004-01-04 8:57 ` Greg KH
2004-01-04 9:43 ` Rob Landley
2004-01-02 0:17 ` Maciej Zenczykowski
[not found] ` <20040102103104.GA28168@mark.mielke.cc>
2004-01-03 6:07 ` Greg KH
2004-01-03 6:51 ` Valdis.Kletnieks
2004-01-03 11:57 ` Ian Kent
2004-01-03 22:08 ` Greg KH
2004-01-07 10:23 ` Olaf Hering
2004-01-01 23:14 ` Rob
2004-01-02 3:53 ` Tyler Hall
2004-01-01 16:17 ` Pascal Schmidt
2004-01-01 20:03 ` Greg KH
2004-01-08 13:53 "Andrey Borzenkov"
2004-01-08 15:40 ` Ian Kent
2004-01-08 17:26 ` Diego Calleja
2004-01-08 19:25 ` Andrey Borzenkov
2004-01-08 22:40 ` Alex Goddard
2004-01-09 7:03 ` "Andrey Borzenkov"
2004-01-08 18:14 ` Alex Goddard
2004-01-08 18:35 ` Alex Goddard
2004-01-08 19:22 ` Andrey Borzenkov
2004-01-09 8:51 ` Helge Hafting
-- strict thread matches above, loose matches on Subject: below --
2004-01-08 13:05 "Andrey Borzenkov"
2004-01-06 1:20 Paul Zimmerman
[not found] <fa.flhsork.uka2hg@ifi.uio.no>
[not found] ` <fa.hv9hpq7.1l1q9p3@ifi.uio.no>
2004-01-01 19:53 ` walt
2004-01-01 21:53 ` Martin Schlemmer
2004-01-01 16:59 Shaheed
[not found] <fa.af64864.ugabhg@ifi.uio.no>
[not found] ` <fa.de7jae9.1jk0pjt@ifi.uio.no>
2003-12-31 22:17 ` walt
2004-01-01 2:03 ` Martin Schlemmer
2004-01-01 2:05 ` Martin Schlemmer
2003-12-31 0:29 Greg KH
2003-12-31 0:53 ` Prakash K. Cheemplavam
2003-12-31 19:17 ` Greg KH
2004-01-02 16:45 ` Shawn
2003-12-31 12:43 ` Paulo Marques
2004-01-01 1:18 ` Helge Hafting
2004-01-03 5:59 ` Greg KH
2004-01-03 15:22 ` Helge Hafting
2004-01-03 21:18 ` viro
2004-01-03 22:11 ` Greg KH
[not found] ` <20040103140140.3b848e9f.witukind@nsbm.kicks-ass.org>
2004-01-03 22:16 ` Greg KH
2004-01-03 22:33 ` Christoph Hellwig
2004-01-02 17:54 ` Andreas Jellinghaus
2004-01-02 18:19 ` Shawn
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