linux-kernel - Open reiserfs transactions (was Re: 2.6.19-rc5: grub is much slower resuming from suspend-to-disk than in 2.6.18)

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Message-Id: <200702121034.08647.stefan@loplof.de>
Date:	Mon, 12 Feb 2007 10:34:08 +0100
From:	Stefan Rompf <stefan@...lof.de>
To:	linux-kernel@...r.kernel.org
Cc:	arvidjaar@...l.ru
Subject: Open reiserfs transactions (was Re: 2.6.19-rc5: grub is much slower resuming from suspend-to-disk than in 2.6.18)

Andrey Borzenkov wrote:

> This is rather funny; in 2.6.19-rc5 grub is *really* slow loading kernel
> when I switch on the system after suspend to disk. Actually, after kernel
> has been loaded, the whole resuming (up to the point I have usable desktop
> again) takes about three time less than the process of loading kernel +
> initrd. During loading disk LED is constantly lit. This almost looks like
> kernel leaves HDD in some strange state, although I always assumed HDD/IDE
> is completely reinitialized in this case.

I have the same problem since I made my desktop computer able to suspend 
again. As others in this thread said, grub replays all open transactions 
internally before accessing a file on an unclean reiserfs partition.

>From some tests, 2.6.19(.x) seems to keep quite a bunch of open transactions 
even if I do multiple syncs just before a hard reset or echo 
>/proc/acpi/sleep on an idle system. I haven't verified against 2.6.18 yet, 
but there have been some non cosmetical reiserfs updates in 2.6.19. Anyone 
aware of a change that may cause this behaviour?

Stefan
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