Re: [PATCH] feat: add zstd support to image conversions

[Jan Kiszka <jan.kiszka@siemens.com>]

On 23.01.23 15:00, Michael Adler wrote:
> This patch enables ISAR to build zstd compressed images.
> 

I was briefly thinking you had solved the dpkg vs. zstd issue - just a
dream :)

Jan

> Signed-off-by: Michael Adler <michael.adler@siemens.com>
> ---
>  meta/classes/imagetypes.bbclass | 10 +++++++++-
>  1 file changed, 9 insertions(+), 1 deletion(-)
> 
> diff --git a/meta/classes/imagetypes.bbclass b/meta/classes/imagetypes.bbclass
> index 1e8e223d..6950da7a 100644
> --- a/meta/classes/imagetypes.bbclass
> +++ b/meta/classes/imagetypes.bbclass
> @@ -93,7 +93,7 @@ IMAGE_CMD_ubi() {
>  IMAGE_CMD_ubi[depends] = "${PN}:do_transform_template"
>  
>  # image conversions
> -IMAGE_CONVERSIONS = "gz xz"
> +IMAGE_CONVERSIONS = "gz xz zst"
>  
>  CONVERSION_CMD_gz = "${SUDO_CHROOT} sh -c 'gzip -f -9 -n -c --rsyncable ${IMAGE_FILE_CHROOT} > ${IMAGE_FILE_CHROOT}.gz'"
>  CONVERSION_DEPS_gz = "gzip"
> @@ -105,3 +105,11 @@ XZ_OPTIONS ?= "--memlimit=${XZ_MEMLIMIT} --threads=${XZ_THREADS}"
>  XZ_OPTIONS[vardepsexclude] += "XZ_MEMLIMIT XZ_THREADS"
>  CONVERSION_CMD_xz = "${SUDO_CHROOT} sh -c 'xz -c ${XZ_OPTIONS} ${IMAGE_FILE_CHROOT} > ${IMAGE_FILE_CHROOT}.xz'"
>  CONVERSION_DEPS_xz = "xz-utils"
> +
> +ZST_LEVEL ?= "19"
> +ZST_THREADS ?= "${@oe.utils.cpu_count(at_least=2)}"
> +ZST_THREADS[vardepvalue] = "1"
> +ZST_OPTIONS ?= "-${ZST_LEVEL} --threads=${ZST_THREADS}"
> +ZST_OPTIONS[vardepsexclude] += "ZST_LEVEL ZST_THREADS"
> +CONVERSION_CMD_zst = "${SUDO_CHROOT} sh -c 'zstd -c ${ZST_OPTIONS} ${IMAGE_FILE_CHROOT} > ${IMAGE_FILE_CHROOT}.zst'"
> +CONVERSION_DEPS_zst = "zstd"

-- 
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