From: Pavel Machek <pavel@ucw.cz>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Oliver Neukum <oliver@neukum.org>,
Raymano Garibaldi <raymano@faunos.com>,
Andrew Morton <akpm@linux-foundation.org>,
Denys Vlasenko <vda.linux@googlemail.com>,
Kernel development list <linux-kernel@vger.kernel.org>,
USB development list <linux-usb-devel@lists.sourceforge.net>
Subject: Re: [linux-usb-devel] [FEATURE REQUEST] Transparent hot plugging of root file system on portable storage devices.
Date: Sat, 5 Jan 2008 22:52:09 +0100 [thread overview]
Message-ID: <20080105215209.GB21565@elf.ucw.cz> (raw)
In-Reply-To: <Pine.LNX.4.44L0.0801021521291.2990-100000@iolanthe.rowland.org>
On Wed 2008-01-02 15:23:30, Alan Stern wrote:
> On Wed, 2 Jan 2008, Oliver Neukum wrote:
>
> > Am Dienstag 01 Januar 2008 schrieb Pavel Machek:
> > > Hi1
> > >
> > > > I would like to request a feature in the Linux kernel that would allow
> > > > a user to unplug a live read-only root file system which exists on a
> > > > detachable storage device such as a USB key drive. The desired
> > > > behavior is that once the same device is reattached to the computer
> > > > the user can continue work transparently without having to reboot.
> > > >
> > > > Having such a feature is becoming more important with advances in
> > > > detachable solid state drive technology.
> > >
> > > Yep, that would be nice.... In fact, patch would be very welcome :-).
> >
> > Use the USB persist feature and hibernate. It should work. If you modify
> > the fs in any way, you'll crash and burn. Unmounting / is harder which you
> > need if you want to do this safely.
>
> What about people who prefer (for reasons of restart latency or
> non-availability of swap space) to suspend rather than hibernate?
For suspend to RAM, we can keep the power session, and be _sure_ noone
unplugged our USB disks, right? So that one should work nicely.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2008-01-05 21:52 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-26 19:04 [linux-usb-devel] [FEATURE REQUEST] Transparent hot plugging of root file system on portable storage devices Raymano Garibaldi
2008-01-01 20:29 ` Pavel Machek
2008-01-02 10:19 ` Oliver Neukum
2008-01-02 20:23 ` Alan Stern
2008-01-05 21:52 ` Pavel Machek [this message]
2008-01-06 17:18 ` Alan Stern
2008-01-06 20:59 ` Oliver Neukum
2008-01-06 22:26 ` Alan Stern
2008-01-06 22:44 ` Pavel Machek
2008-01-07 15:39 ` Alan Stern
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