X-Git-Url: http://xvm.mit.edu/gitweb/invirt/packages/invirt-xen-config.git/blobdiff_plain/e6d32855bfce6955d1397567982709efedb2e840..84cdb5b95b921725f369b5b0a5588a606aab96cc:/debian/invirt-xen-config.init

diff --git a/debian/invirt-xen-config.init b/debian/invirt-xen-config.init
index 9375e96..ec23d0d 100755
--- a/debian/invirt-xen-config.init
+++ b/debian/invirt-xen-config.init
@@ -17,7 +17,7 @@ GEN_FILES=(/etc/xen/xend-config.sxp.invirt)
 SYSVMS=(s_master s_remote s_console)
 i=1
 for vm in "${SYSVMS[@]}"; do
-    GEN_FILES[$i] = "$vm"
+    GEN_FILES[$i]="/etc/xen/sysvms/$vm"
     i=$((i + 1))
 done
 
@@ -39,7 +39,11 @@ start_sysvm() {
     fi
     
     if lvchange -a n "$DISK" >/dev/null 2>&1 && lvchange -a ey "$DISK" >/dev/null 2>&1; then
-        # If we can lock on the VM's disk, then the VM isn't running
+        # If we can disable and then re-enable the VMs disk, then the
+        # VM can't be running. If the lvchange -a ey succeeds, then we
+        # have an exclusive lock across the cluster on enabling the
+        # disk, which avoids the potential race condition of two hosts
+        # starting a VM at the same time
         [ "$VERBOSE" != no ] && log_daemon_msg "Starting sysvm $VM"
         xm create "sysvms/$VM" >/dev/null
         [ "$VERBOSE" != no ] && log_end_msg $?