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Diffstat (limited to 'common/overlay')
| -rw-r--r-- | common/overlay | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/common/overlay b/common/overlay index 452b3b09..816ed66d 100644 --- a/common/overlay +++ b/common/overlay @@ -201,6 +201,19 @@ _require_scratch_overlay_features() _scratch_unmount } +# Check kernel support for <lowerdirs>::<lowerdatadir> format +_require_scratch_overlay_lowerdata_layers() +{ + local lowerdirs="$OVL_BASE_SCRATCH_MNT/$OVL_UPPER::$OVL_BASE_SCRATCH_MNT/$OVL_LOWER" + + _scratch_mkfs > /dev/null 2>&1 + _overlay_scratch_mount_dirs "$lowerdirs" "-" "-" \ + -o ro,redirect_dir=follow,metacopy=on > /dev/null 2>&1 || \ + _notrun "overlay data-only layers not supported on ${SCRATCH_DEV}" + + _scratch_unmount +} + # Helper function to check underlying dirs of overlay filesystem _overlay_fsck_dirs() { |