* JFFS2 mount time is really bad on 1st boot only
@ 2005-01-12 19:47 Stuart Yoder
2005-01-12 20:02 ` David Woodhouse
0 siblings, 1 reply; 3+ messages in thread
From: Stuart Yoder @ 2005-01-12 19:47 UTC (permalink / raw)
To: linux-mtd
We are using JFFS2 in a Linux 2.4.28 kernel based system (PowerPC based
hw). We have a large (256MB) flash.
Here is the scenario for some behaviour we are seeing that we are trying
to undertand:
-create Linux root filesystem with mkfs.jffs2-- about 90MB of data.
-flash partition onto board-- ~90MB data, ~140MB free (erased)
-boot Linux
-mount of JFFS2 root partition takes on the order of 8 min
-reboot system from Linux
-mount of JFFS2 root partition takes ~30 sec
All subsequent boots take ~30 sec.
Does anybody have any idea of why the very first mount of the filesystem
takes so long?
Thanks,
Stuart Yoder
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: JFFS2 mount time is really bad on 1st boot only
2005-01-12 19:47 JFFS2 mount time is really bad on 1st boot only Stuart Yoder
@ 2005-01-12 20:02 ` David Woodhouse
2005-01-12 20:10 ` David Woodhouse
0 siblings, 1 reply; 3+ messages in thread
From: David Woodhouse @ 2005-01-12 20:02 UTC (permalink / raw)
To: Stuart Yoder; +Cc: linux-mtd
On Wed, 2005-01-12 at 13:47 -0600, Stuart Yoder wrote:
> Does anybody have any idea of why the very first mount of the
> filesystem takes so long?
It's probably erasing the unused part of the file system. Running with
CONFIG_JFFS2_FS_DEBUG=1 should fix that.
Running a current (i.e. 2.6) kernel should make the subsequent mounts a
lot faster too.
--
dwmw2
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: JFFS2 mount time is really bad on 1st boot only
2005-01-12 20:02 ` David Woodhouse
@ 2005-01-12 20:10 ` David Woodhouse
0 siblings, 0 replies; 3+ messages in thread
From: David Woodhouse @ 2005-01-12 20:10 UTC (permalink / raw)
To: Stuart Yoder; +Cc: linux-mtd
On Wed, 2005-01-12 at 20:02 +0000, David Woodhouse wrote:
> It's probably erasing the unused part of the file system. Running with
> CONFIG_JFFS2_FS_DEBUG=1 should fix that.
Doh.
s/fix that/show you that/
--
dwmw2
^ permalink raw reply [flat|nested] 3+ messages in thread
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2005-01-12 19:47 JFFS2 mount time is really bad on 1st boot only Stuart Yoder
2005-01-12 20:02 ` David Woodhouse
2005-01-12 20:10 ` David Woodhouse
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