[Buildroot] [PATCH] fs: ensure hard links in TARGET_DIR are correctly copied for filesystem input
Yann E. MORIN
yann.morin.1998 at free.fr
Sun May 27 21:39:57 UTC 2018
Peter, All,
On 2018-05-27 22:48 +0200, Peter Korsgaard spake thusly:
> Fixes #11046
>
> Commit bb2a57a17a7 (fs: run packages' filesystem hooks in a copy of target/)
> changed the file system logic to run file system hooks from packages on a
> copy of TARGET_DIR, and finally use this copy as input for the file system
> generation.
>
> This copy was done with rsync, which by default does not preserve hard
> links, leading to an expansion of the file system images when hard links are
> present.
>
> Fix it by passing the -H option to rsync (preserve hard links).
>
> Signed-off-by: Peter Korsgaard <peter at korsgaard.com>
Not sure how I was not able to reproduce the issue. But the rsync docs
say we should use it, so:
Acked-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>
Regards,
Yann E. MORIN.
> ---
> Alternatively we can use 'cp -a' instead of rsync.
>
> fs/common.mk | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/common.mk b/fs/common.mk
> index 9baf367729..abf35418cb 100644
> --- a/fs/common.mk
> +++ b/fs/common.mk
> @@ -71,7 +71,7 @@ $(ROOTFS_COMMON_TAR): $(ROOTFS_COMMON_DEPENDENCIES) target-finalize
> @$(call MESSAGE,"Generating common rootfs tarball")
> rm -rf $(FS_DIR)
> mkdir -p $(FS_DIR)
> - rsync -au $(BASE_TARGET_DIR)/ $(TARGET_DIR)
> + rsync -auH $(BASE_TARGET_DIR)/ $(TARGET_DIR)
> echo '#!/bin/sh' > $(FAKEROOT_SCRIPT)
> echo "set -e" >> $(FAKEROOT_SCRIPT)
> echo "chown -h -R 0:0 $(TARGET_DIR)" >> $(FAKEROOT_SCRIPT)
> --
> 2.11.0
>
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