updates, especially for etiona

[distro-setup] / check-subvol-stale

diff --git a/check-subvol-stale b/check-subvol-stale
index 07926ef49e3af16535a2d62c915f37cd88552426..8e7d7547457a4e02f01efeaf4720f4a9bf9a699a 100644 (file)
--- a/check-subvol-stale
+++ b/check-subvol-stale
@@ -100,12 +100,13 @@ for d; do
     echo "$0: error could not find root subvol mount for $dev" >&2
     exit 1
   fi
-  svp=$root_dir/$subvol_dir
+  svp=$root_dir/$subvol_dir # subvolume path
   d "svp=$svp # subvolume path"
 
   snaps=($root_dir/btrbk/$subvol_dir.20*) # Assumes we are in the 21st century.
   if [[ ! ${snaps[*]} ]]; then
     # no snapshots yet
+    # TODO: make this an error and override with a cli flag
     echo "$0: warning: no snapshots found at $root_dir/btrbk/$subvol_dir.20*. this is expected for a brand new volume"
     continue
   fi
@@ -135,7 +136,8 @@ for d; do
       f=${s##*/}
       unix_time=$(date -d $(sed -r  's/(.{4})(..)(.{5})(..)(.*)/\1-\2-\3:\4:\5/' <<<${f#$vol.}) +%s)
       printf "%s %s\n" $unix_time $s
-    done | sort -r | head -n 1 | awk '{print $2}'
+      # sort will fail
+    done | sort -r | head -n 1 | awk '{print $2}' || [[ ${PIPESTATUS[1]} == 2 ]]
            )
   if [[ ! $last_snap ]]; then
     # should not happen.