CP-46179 use -y (yes) flag to facilitate scripting

We have added an interactive prompt in case the backup VDI was created
by an earlier version and does not match the expected UUID. To
facilitate scripting, add a -y (yes) flag that assumes a confirmation.

Signed-off-by: Christian Lindig <[email protected]>

Author: Christian Lindig

scripts/xe-backup-metadata

@@ -39,6 +39,7 @@ function usage {
     echo " -k: Number of older backups to preserve (default: ${history_kept})"
     echo " -n: Just try to find a backup VDI and stop the script after that"
     echo " -f  Force backup even when less than 10% free capacity is left on the backup VDI"
+    echo " -y: Assume non-interactive mode and yes to all questions"
     echo " -v: Verbose output"
     echo 
     echo
@@ -86,7 +87,8 @@ just_find_vdi=0
 fs_uninitialised=0
 usage_alert=90
 force_backup=0
-while getopts "hvink:u:dcf" opt ; do
+yes=0
+while getopts "yhvink:u:dcf" opt ; do
     case $opt in
     h) usage ;;
     c) create_vdi=1 ; fs_uninitialised=1 ;;
@@ -96,6 +98,7 @@ while getopts "hvink:u:dcf" opt ; do
     d) leave_mounted=1 ;;
     n) just_find_vdi=1 ;;
     v) debug="" ;;
+    y) yes=1 ;;
     f) force_backup=1 ;;
     *) echo "Invalid option"; usage ;;
     esac
@@ -159,7 +162,7 @@ function cleanup {
 
 # if we can't validate the UUID of the VDI, prompt the user
 if [ -n "${vdi_uuid}" ]; then
-    if ! validate_vdi_uuid "${sr_uuid}" "${vdi_uuid}"; then
+    if ! validate_vdi_uuid "${sr_uuid}" "${vdi_uuid}" && [ "$yes" -eq 0 ]; then
         echo "Backup VDI $vdi_uuid was most likley create by an earlier"
         echo "version of this code. Make sure this is a VDI that you"
         echo "created as we can't validate it without mounting it."

scripts/xe-restore-metadata

@@ -163,7 +163,7 @@ fi
 trap cleanup SIGINT ERR
 
 for vdi_uuid in ${vdis}; do
-   if [ "${vdi_uuid}" != "${backup_vdi}" ]; then
+   if [ "${vdi_uuid}" != "${backup_vdi}" ] && [ "$yes" -eq 0 ]; then
       echo "Probing VDI ${vdi_uuid}."
       echo "This VDI was created with a prior version of this code."
       echo "Its validity can't be checked without mounting it first."