Overlayfs-etc is useful if the rootfs is read-only. One reason to have the rootfs read-only is to allow image based updating.
Image based updating will change the underlying root file system, which is unsupported by overlayfs when with some mount options [1]. This disables those options. [1] https://www.kernel.org/doc/html/latest/filesystems/overlayfs.html?highlight=overlayfs#changes-to-underlying-filesystems Signed-off-by: Claudius Heine <[email protected]> --- meta/files/overlayfs-etc-preinit.sh.in | 1 + 1 file changed, 1 insertion(+) diff --git a/meta/files/overlayfs-etc-preinit.sh.in b/meta/files/overlayfs-etc-preinit.sh.in index 1daf83513e..51cbdf25a8 100644 --- a/meta/files/overlayfs-etc-preinit.sh.in +++ b/meta/files/overlayfs-etc-preinit.sh.in @@ -26,6 +26,7 @@ then -o upperdir={OVERLAYFS_ETC_MOUNT_POINT}/overlay-etc/upper \ -o lowerdir=/etc \ -o workdir={OVERLAYFS_ETC_MOUNT_POINT}/overlay-etc/work \ + -o index=off,xino=off,redirect_dir=off,metacopy=off \ {OVERLAYFS_ETC_MOUNT_POINT}/overlay-etc/upper /etc || \ echo "PREINIT: Mounting etc-overlay failed!" else -- 2.35.1
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