postgres-make-base-backups: rename variables to make them more obvious

diff --git a/modules/postgres/templates/backup_server/postgres-make-base-backups.erb b/modules/postgres/templates/backup_server/postgres-make-base-backups.erb
index 8b34f48..3d9e7ed 100755 (executable)
--- a/modules/postgres/templates/backup_server/postgres-make-base-backups.erb
+++ b/modules/postgres/templates/backup_server/postgres-make-base-backups.erb
@@ -130,14 +130,14 @@ while read host port username  cluster version; do
                         # get a "randomish" but stable value for this backup run
                         val=$(echo "$MYHOSTNAME-$host-$port-$mtime" | sha256sum | head -c 8)
                         val=$((16#$val))
-                        valmod=$(($val % $DELTA_WAIT_SUCCESS))
-                        after_min=$((delta - MIN_WAIT_SUCCESS))
-                        if [ "$after_min" -lt "$valmod" ]; then
+                        rnd_cuttoff=$(($val % $DELTA_WAIT_SUCCESS))
+                        age_after_min=$((delta - MIN_WAIT_SUCCESS))
+                        if [ "$age_after_min" -lt "$rnd_cuttoff" ]; then
                             runme=0
-                            log "Skipping $host:$port $version/$cluster because random computer says wait ($after_min < $valmod)."
+                            log "Skipping $host:$port $version/$cluster because random computer says wait ($age_after_min < $rnd_cuttoff)."
                         else
                             runme=1
-                            log "Planning to run $host:$port $version/$cluster because random computer says so ($after_min >= $valmod)."
+                            log "Planning to run $host:$port $version/$cluster because random computer says so ($age_after_min >= $rnd_cuttoff)."
                         fi
                     fi
                 fi