From dd584baf82c693d46b8375e1e1a09684739f0e8b Mon Sep 17 00:00:00 2001
From: "Ruben S. Montero" <rsmontero@opennebula.org>
Date: Thu, 11 Mar 2021 17:21:28 +0100
Subject: [PATCH] B #3778: Fail on non-KVM host for live cpds

(cherry picked from commit ec5c2c68a8b8c815561d00e328091ab6eb8f1aba)
---
 src/tm_mad/ssh/cpds | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/src/tm_mad/ssh/cpds b/src/tm_mad/ssh/cpds
index f8765640e7..061d51aa6b 100755
--- a/src/tm_mad/ssh/cpds
+++ b/src/tm_mad/ssh/cpds
@@ -122,6 +122,33 @@ EOF
         log_error "Exporting failed"
         exit 1
     fi
+else
+    # if SRC is qcow2 with backing chain, convert it to tmp path
+    CPDS_CMD_EXPORT=$(cat <<EOF
+        set -e -o pipefail
+        if [ -L $SRC_PATH ] && file -L $SRC_PATH | grep -q 'has backing file'; then
+            $QEMU_IMG convert -O qcow2 $SRC_PATH $SRC_TEMP_PATH;
+            exit 42;
+        fi
+EOF
+)
+
+    ssh_exec_and_log_no_error $SRC_HOST "$CPDS_CMD_EXPORT" "$CPDS_CMD_ERR" "100"
+    RC=$?
+    if [ $RC = 0 ]; then
+        # no export needed
+        true
+    elif [ $RC = 42 ]; then
+        # qcow2 detected and exported, re-point SRC and other vars
+        SRC="${SRC_HOST}:${SRC_TEMP_PATH}"
+        set_src_dst_vars
+
+        # Always try delete temp export
+        trap "ssh_exec_and_log $SRC_HOST \"$RM ${SRC_TEMP_PATH}\"" EXIT
+    else
+        error_message "cpds: Can not convert qcow2 chain $SRC_PATH"
+        exit 1
+    fi
 fi
 
 log "Moving $SRC to datastore as $DST"