linux-kernel - Re: USB: on suspend to ram/disk all usb devices are replugged

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Date:	Mon, 2 Apr 2007 18:28:24 +0000
From:	Pavel Machek <pavel@....cz>
To:	Mark Lord <lkml@....ca>
Cc:	David Zeuthen <davidz@...hat.com>, Maxim <maximlevitsky@...il.com>,
	Pete Zaitcev <zaitcev@...hat.com>,
	Alan Stern <stern@...land.harvard.edu>, gregkh@...e.de,
	Kernel development list <linux-kernel@...r.kernel.org>,
	USB development list <linux-usb-devel@...ts.sourceforge.net>
Subject: Re: USB: on suspend to ram/disk all usb devices are replugged

Hi!

> >Problem is that suspending _with_ removable mass 
> >storage devices
> >attached just will not work. User will unplug them, 
> >then complain
> >about corruption. Advanced user will unplug them, work 
> >with them
> >somewhere else, replug them, then loose filesystem.
> >
> >Feel free to send patch to teach filesystems to handle 
> >this.
> 
> People have already fixed this:  sync() before suspend,
> and use a journalling filesystem.  Problem solved.

Does not solve the 'user removed it and mounted it somewhere else in
the meantime' problem.

Alan proposed one possible solution....
							Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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