[yocto] rootfs image size

[Darren Hart]

On 01/26/2011 03:58 PM, Tian, Kevin wrote:
>> From: Chris Tapp
>> Sent: Wednesday, January 26, 2011 9:09 PM
>>
>> I know this is probably a basic question, but I'm not having much luck !
>>
>> I've built poky-image-minimal for atom-pc using the 0.9 Poky release.
>>
>> This gives me an ext3 rootfs of over 80MB, which doesn't sound minimal
>> to me ;-)
>
> This is a known issue in 0.9. the switch from ipk to rpm leaves some temporary files
> in the final ext3 rootfs, which results the large size.
>
>>
>> Can I reduce the size of the image, or is it expected to be this size?
>>
>> I've tried changing
>>
>> IMAGE_ROOTFS_SIZE_ext3 = "500000"
>
> This configuration option only works when it exceeds the size of generated rootfs,
> or else it will be changed implicitly to the actual size plus some extra buffer
>
>>
>>    in atom-pc.conf to another value, but this didn't make any
>> difference to the image that gets created (by re-running bitbake poky-
>> image-minimal after making the above change).
>>
>> I've also tried using
>>
>> ROOT_FLASH_SIZE = "64"
>>
>> also without any luck.
>>
>> Any help would be much appreciated !
>>
>
> I'd suggest you to use the master to see whether it works for you.
>
> The alternative is to apply below commit to your 0.9 code:
>
> commit 5e384038cbd5035377d61a1b77ad23ab69e0cac0
> Author: Richard Purdie<richard.purdie at linuxfoundation.org>
> Date:   Wed Jan 5 18:56:47 2011 +0000
>
>      rootfs_rpm.bbclass: Remove temporary work files in install directory, saving work files in install directory, saving the manifests as logfiles into ${T}
>
>      Signed-off-by: Richard Purdie<richard.purdie at linuxfoundation.org>
>
> diff --git a/meta/classes/rootfs_rpm.bbclass b/meta/classes/rootfs_rpm.bbclass
> index 33abe96..2f7d691 100644
> --- a/meta/classes/rootfs_rpm.bbclass
> +++ b/meta/classes/rootfs_rpm.bbclass
> @@ -202,8 +202,11 @@ EOF
>          # remove lock files
>          rm -f ${IMAGE_ROOTFS}${rpmlibdir}/__db.*
>
> -       # remove resolver files and manifests
> -       rm -f ${IMAGE_ROOTFS}/install/install.manifest
> +       # Move manifests into the directory with the logs
> +       mv ${IMAGE_ROOTFS}/install/*.manifest ${T}/
> +
> +       # Remove all remaining resolver files
> +       rm -f ${IMAGE_ROOTFS}/install


This needs to be "rm -rf", there is another patch in master that takes 
care of this: 21fafc889e81411735de7d04ffe504e5cff4830d

--
Darren


>
>          log_check rootfs
>
> Thanks
> Kevin
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-- 
Darren Hart
Intel Open Source Technology Center
Yocto Project - Linux Kernel