linux-kernel - Re: 2.6.19-rc5: grub is much slower resuming from suspend-to-disk than in 2.6.18

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Date:	Tue, 14 Nov 2006 00:11:09 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Stefan Seyfried <seife@...e.de>
Cc:	Andrey Borzenkov <arvidjaar@...l.ru>, linux-kernel@...r.kernel.org,
	Pavel Machek <pavel@....cz>
Subject: Re: 2.6.19-rc5: grub is much slower resuming from suspend-to-disk than in 2.6.18

On Monday, 13 November 2006 23:55, Stefan Seyfried wrote:
> On Mon, Nov 13, 2006 at 09:54:38PM +0300, Andrey Borzenkov wrote:
> > Hash: SHA1
> > 
> > On Monday 13 November 2006 11:15, Stefan Seyfried wrote:
> > > The most important question:
> > > What filesystem is your /boot on? I'd bet quite some money that it is
> > > reiser or some other journaling FS (not ext3).
> > >
> > 
> > there is no /boot, I use single / which is reiser.
> 
> ok, so your /boot is on reiser. Q.E.D.
> 
> > > I am pretty sure that it will also happen if you do "updatedb &", wait a
> > > minute and then do a _HARD_ power off.
> > >
> > > I am pretty sure that it has nothing to do with the kernel version, just
> > > with the layout of your /boot partition (which of course changes with every
> > > kernel update). In other words: until now, you just have been lucky.
> > 
> > The idea is nice; unfortunately it fails to explain the difference 
> > between 'poweroff'
> 
> filesystem cleanly unmounted
> 
> > and 'suspend disk'
> 
> filesystem unclean.
> 
> > cases. I doubt disk layout is changed 
> > between them.
> 
> Try the "updatedb &, then _HARD_ poweroff" test described above. It will take
> long to load grub afterwards.

Alternatively, you can use a recent -mm kernel with the bdevs freezing patch
and see if that helps GRUB. ;-)

Greetings,
Rafael


-- 
You never change things by fighting the existing reality.
		R. Buckminster Fuller
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