Re: [OE-core] [PATCH 08/11] build-appliance-image: use a real /tmp

[Trevor Woerner <twoerner@gmail.com>]

On Tue 2023-02-21 @ 03:44:42 PM, Trevor Woerner via lists.openembedded.org wrote:
> Make /tmp a real directory in the root filesystem and not a link to an
> in-memory tmpfs. Otherwise bitbake will run out of inodes on /tmp very quickly
> and stop any build.
> 
> Signed-off-by: Trevor Woerner <twoerner@gmail.com>
> ---
>  meta/recipes-core/images/build-appliance-image_15.0.0.bb | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/meta/recipes-core/images/build-appliance-image_15.0.0.bb b/meta/recipes-core/images/build-appliance-image_15.0.0.bb
> index 3a84de0a2b43..1f7b96a9fcf4 100644
> --- a/meta/recipes-core/images/build-appliance-image_15.0.0.bb
> +++ b/meta/recipes-core/images/build-appliance-image_15.0.0.bb
> @@ -113,6 +113,12 @@ fakeroot do_tweak_image () {
>  	# add a /lib64 symlink
>  	# this is needed for building rust-native on a 64-bit build appliance
>  	ln -rs ${IMAGE_ROOTFS}/lib ${IMAGE_ROOTFS}/lib64
> +
> +	# make /tmp a real directory and not a link to an in-memory tmpfs
> +	# otherwise /tmp will run out of inodes very quickly when bitbaking
> +	sed -i -e 's#l root root 1777 /tmp /var/tmp#d root root 1777 /tmp none#' ${IMAGE_ROOTFS}/etc/default/volatiles/00_core
> +	mkdir -p ${IMAGE_ROOTFS}/tmp
> +	chmod 1777 ${IMAGE_ROOTFS}/tmp
>  }

Richard, this feels rather "hacky" to me. I can't help wonder if it would be
better to implement a VOLATILE_TMP_DIR mechanism (along the same lines as
VOLATILE_LOG_DIR)?

https://docs.yoctoproject.org/dev/ref-manual/variables.html?highlight=volatile_log_dir#term-VOLATILE_LOG_DIR
https://git.openembedded.org/openembedded-core/tree/meta/recipes-core/initscripts/initscripts_1.0.bb#n107