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

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Message-ID: <461117E4.3060504@rtr.ca>
Date:	Mon, 02 Apr 2007 10:49:08 -0400
From:	Mark Lord <lkml@....ca>
To:	Pavel Machek <pavel@....cz>
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

Pavel Machek wrote:
> ..
> 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.

And when the rootfs is on an external drive, this is the *only* option.

So let's make it work (again, like it used to work!).
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