Add feature to try rollback twice if it fails

[zfs-ubuntu/.git] / zfs-replicate

diff --git a/zfs-replicate b/zfs-replicate
index b3f7cffd16d31dc3bbfa44df3ce5b7cdd2840b5f..02f9924ad6c8a7a2f48ded18ab10f60cf62da2df 100755 (executable)
--- a/zfs-replicate
+++ b/zfs-replicate
@@ -18,6 +18,13 @@ remote=$1
 remote_fs=$2
 remote_pool=${2%%/*}
 
+# get the backup pool from the command line or the config file if not specified
+if [[ -n $3 ]]; then
+    backup_pool=$3
+else
+    backup_pool=${backup_pool%% *} # use the first backup pool if none specified
+fi
+
 # Setup our cleanup and exit trap
 cleanup() {
   if [[ -e "$local_list" ]]; then
@@ -196,9 +203,13 @@ if [ $no_markers == 0 ]; then
   # backup was interrupted for some reason. If we don't do this, the zfs send -R command
   # below may complain about snaps already existing as it tries to resend from the 
   # previous backup marker again from a previously interrupted replicate.
-  $zfs rollback -r ${backup_pool}/${previous_backup_marker} 
+  $zfs rollback -rf ${backup_pool}/${previous_backup_marker} 
   if [ $? != 0 ]; then
-    fatal_and_exit "-E- remote incremental $zfs rollback command failed on $hostname" $mailto
+    sleep 120
+    $zfs rollback -rf ${backup_pool}/${previous_backup_marker}
+    if [ $? != 0 ]; then
+      fatal_and_exit "-E- remote incremental $zfs rollback command failed on $hostname" $mailto
+    fi
   fi
   # Now it should be safe to send the snaps
   replicate "$zfs send -Rc -I${previous_backup_marker} ${current_backup_marker}"