2.6.8.1 / 2.6.9-rc3-ds1 jffs2 root mount failure

2.6.8.1 / 2.6.9-rc3-ds1 jffs2 root mount failure

[Prashant Alves]

Hi,

I have been trying to get IXP425 based coyote board to boot with 2.6.8.1 /
2.6.9-rc3-ds1 with mtd-snapshot-20041005. I have selected jffs2 to also be
updated from the snapshot.

However at bootup I get:
Kernel panic - not syncing:VFS: Unable to mount root fs on
unknown-block(31,2)

The root on flash is a jffs2 filesystem and I pass root=/dev/mtdblock2 as
my kernel parameters.

The partition mounts fine when I boot using NFS and do a manual mount. It
also  works fine as root on a 2.4.19-ds3 kernel that I have.

Tracing through it seems get_fs_names() in mount_block_root() in
init/do_mounts.c fails.

Any idea what is causing this ? Any suggestions where I should be looking
for the cause of the problem.

Thanks,
Prashant Alves

Re: 2.6.8.1 / 2.6.9-rc3-ds1 jffs2 root mount failure - FAQ

[Thomas Gleixner]

On Fri, 2004-10-08 at 06:54, Prashant Alves wrote:
> Hi,
> 
> I have been trying to get IXP425 based coyote board to boot with 2.6.8.1 /
> 2.6.9-rc3-ds1 with mtd-snapshot-20041005. I have selected jffs2 to also be
> updated from the snapshot.
> 
> However at bootup I get:
> Kernel panic - not syncing:VFS: Unable to mount root fs on
> unknown-block(31,2)
> 
> The root on flash is a jffs2 filesystem and I pass root=/dev/mtdblock2 as
> my kernel parameters.
> 
> The partition mounts fine when I boot using NFS and do a manual mount. It
> also  works fine as root on a 2.4.19-ds3 kernel that I have.
> 
> Tracing through it seems get_fs_names() in mount_block_root() in
> init/do_mounts.c fails.

pass rootfstype=jffs2 in the commandline

tglx