[ECOS] RedBoot 2.0.0 cannot find files on ext2 partitions formatted with mke2fs 1.41.3 from Ubuntu

[ECOS] RedBoot 2.0.0 cannot find files on ext2 partitions formatted with mke2fs 1.41.3 from Ubuntu

[Carruth, Rusty]

Greetings all!

I have a problem with RedBoot - apparently Red Boot 2.0.0 can read ext2
formatted filesystems if you use mke2fs 1.36, but not with mke2fs 1.41.3
(from Ubuntu 8.10).  (I get 'file not found', or something along those
lines, when I try to boot with 1.41.3-formatted ext2 partition, but it
works fine with 1.36-formatted ext2 partition.  And I'm using a script
which does simple 'mke2fs /dev/sda1' commands identically when building
either 1.36-formatted or 1.41.3-formatted CF images).

I looked all over the place for a 'revision history' for RedBoot (and
eCos), but no joy.

I looked all over the mailing lists as well, and had no luck finding any
hint of others having this problem.

So - was this a known problem, and has it been fixed, or do I always
have to format my ext2 compact flash partition with an old mke2fs?

Or, in the alternative, would upgrading to the most recent RedBoot fix
this issue?  (I'd hate to spend the effort upgrading to find it doesn't
fix anything and instead breaks something in our system...)

Thanks!

Rusty 


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[ECOS] Re: RedBoot 2.0.0 cannot find files on ext2 partitions formatted with mke2fs 1.41.3 from Ubuntu

[John Dallaway]

Hi Rusty

Carruth, Rusty wrote:

> I have a problem with RedBoot - apparently Red Boot 2.0.0 can read ext2
> formatted filesystems if you use mke2fs 1.36, but not with mke2fs 1.41.3
> (from Ubuntu 8.10).  (I get 'file not found', or something along those
> lines, when I try to boot with 1.41.3-formatted ext2 partition, but it
> works fine with 1.36-formatted ext2 partition.  And I'm using a script
> which does simple 'mke2fs /dev/sda1' commands identically when building
> either 1.36-formatted or 1.41.3-formatted CF images).

Firstly, where did your RedBoot sources come from? The "2.0.0" version
string suggests that your RedBoot build is not from the official eCos
2.0 distribution.

> I looked all over the place for a 'revision history' for RedBoot (and
> eCos), but no joy.

Each eCos package has its own ChangeLog. The ChangeLog for RedBoot is
located within the eCos repository at:

  packages/redboot/<version>/ChangeLog

You might also consider looking at the mke2fs ChangeLog to see what has
changed between 1.36 and 1.41.3.

John Dallaway

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