With the introduction of lum_layout_version field to lov_user_md, using "tar --xattr" to backup and restore the Lustre layout (LOV EA) will incorrectly pass the lum_layout_version value back to ll_setxattr() as lum_stripe_offset. This will incorrectly turn the layout version into the starting OST index, for cases where the version is within [1,max_ost_idx].

This may cause, for example, all files that have been migrated once to be restored by tar onto OST1.