minor improvements

[distro-setup] / switch-mail-host

diff --git a/switch-mail-host b/switch-mail-host
index ffff83e264dbce8b7e1034d85aea10a055711712..ffb0814b6776e65d0d64366e9c49dd7a5b32e577 100644 (file)
--- a/switch-mail-host
+++ b/switch-mail-host
@@ -10,6 +10,10 @@ Turn off mail receiving on OLD_HOST, run btrbk to move mail to NEW_HOST,
 turn on mail receiving on NEW_HOST.  Assumes we want to move all
 filesystems unless passing -o.
 
+-a         Avoid snapshot /a, /q, and similar. If we haven't
+           made any changes in the last hour, there is no
+           need to snapshot anything but /o, and we will
+           just do that once.
 -i         Disallow incremental backup.
 -o         Only btrbk /o, instead of all filesystems.
 --force    Run even though our local state does not say that MAIL_HOST is
@@ -58,10 +62,11 @@ mail_only=false
 host2_only=false
 force=false
 mp_args="-m /o,/a,/ar,/q,/qr"
-temp=$(getopt -l force,help ioh "$@") || usage 1
+temp=$(getopt -l force,help aioh "$@") || usage 1
 eval set -- "$temp"
 while true; do
   case $1 in
+    -a) snapshot_arg=resume ;;
     --force) force=true ;;
     -i) incremental_arg="-i" ;;
     -o)
@@ -241,7 +246,7 @@ EOF
 
 
 e Running initial btrbk
-m btrbk-run -v $bbk_args $incremental_arg $mp_args || ret=$?
+m btrbk-run -v $bbk_args $incremental_arg $mp_args $snapshot_arg || ret=$?
 if (( ret )); then
   err "failed initial btrbk"
   exit $ret