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authorJan Alexander Steffens (heftig) <jan.steffens@gmail.com>2017-03-07 20:14:50 +0100
committerJan Alexander Steffens (heftig) <jan.steffens@gmail.com>2017-03-07 20:39:11 +0100
commiteec7fcf965763d5395c336f92cd56b193d054947 (patch)
treeaa5054fbc735c86c8cfce83ef7f528e5d6781fdc
parentc53a3e80170dc9d45beeeb623edfbf0bd40799a7 (diff)
downloaddevtools-eec7fcf965763d5395c336f92cd56b193d054947.tar.gz
devtools-eec7fcf965763d5395c336f92cd56b193d054947.tar.xz
archbuild/makechrootpkg: Delete subvolumes in roots
The systemd package creates a subvolume at /var/lib/machines (through tmpfiles), if it can. We need to delete this subvolume before we can delete the parent subvolume. Look through the root for inodes with the number 256. These identify subvolume roots.
-rw-r--r--archbuild.in4
-rw-r--r--lib/archroot.sh20
-rw-r--r--makechrootpkg.in6
3 files changed, 23 insertions, 7 deletions
diff --git a/archbuild.in b/archbuild.in
index b192788..a78353c 100644
--- a/archbuild.in
+++ b/archbuild.in
@@ -52,9 +52,7 @@ if ${clean_first} || [[ ! -d "${chroots}/${repo}-${arch}" ]]; then
lock 9 "$copy.lock" "Locking chroot copy '$copy'"
- if is_btrfs "${copy}"; then
- { type -P btrfs && btrfs subvolume delete "${copy}"; } &>/dev/null
- fi
+ subvolume_delete_recursive "${copy}"
rm -rf --one-file-system "${copy}"
done
exec 9>&-
diff --git a/lib/archroot.sh b/lib/archroot.sh
index 14417aa..989f1e1 100644
--- a/lib/archroot.sh
+++ b/lib/archroot.sh
@@ -20,3 +20,23 @@ check_root() {
is_btrfs() {
[[ -e "$1" && "$(stat -f -c %T "$1")" == btrfs ]]
}
+
+##
+# usage : subvolume_delete_recursive( $path )
+#
+# Find all btrfs subvolumes under and including $path and delete them.
+##
+subvolume_delete_recursive() {
+ local subvol
+
+ is_btrfs "$1" || return 0
+
+ while IFS= read -d $'\0' -r subvol; do
+ if ! btrfs subvolume delete "$subvol" &>/dev/null; then
+ error "Unable to delete subvolume %s" "$subvol"
+ return 1
+ fi
+ done < <(find "$1" -xdev -depth -inum 256 -print0)
+
+ return 0
+}
diff --git a/makechrootpkg.in b/makechrootpkg.in
index 9e84996..dc598f7 100644
--- a/makechrootpkg.in
+++ b/makechrootpkg.in
@@ -97,10 +97,8 @@ create_chroot() {
stat_busy "Creating clean working copy [$copy]"
if is_btrfs "$chrootdir" && ! mountpoint -q "$copydir"; then
- if [[ -d $copydir ]]; then
- btrfs subvolume delete "$copydir" >/dev/null ||
- die "Unable to delete subvolume %s" "$copydir"
- fi
+ subvolume_delete_recursive "$copydir" ||
+ die "Unable to delete subvolume %s" "$copydir"
btrfs subvolume snapshot "$chrootdir/root" "$copydir" >/dev/null ||
die "Unable to create subvolume %s" "$copydir"
else