[libvirt] [PATCH][QEMU driver] Catch cdrom change error
Currently when we attempt to change the cdrom in a qemu VM the monitor
doesn't generate an error if the target filename doesn't exist. I've
submitted a patch[1] for this. This patch is the libvirt qemu-driver
side which catches the error message from the monitor and reportes the
error to libvirt. This means that virsh attach-disk cdrom commands
won't appear to succeed when qemu change command actually failed.
I've tested this patch on an older libvirt (rebuild libvirt-0.7.0 on my
ubuntu host) but haven't rebuilt against git head since I can't
quite compile that on my host.
1. http://lists.gnu.org/archive/html/qemu-devel/2010-03/msg01935.html
Signed-off-by: Ryan Harper <ryanh(a)us.ibm.com>
diff --git a/src/qemu/qemu_monitor_text.c b/src/qemu/qemu_monitor_text.c
index 1596e59..f868907 100644
--- a/src/qemu/qemu_monitor_text.c
+++ b/src/qemu/qemu_monitor_text.c
@@ -905,7 +905,14 @@ int qemuMonitorTextChangeMedia(qemuMonitorPtr mon,
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("could not eject media on %s: %s"), devname, reply);
goto cleanup;
- }
+ }
+
+ /* Could not open message indicates bad filename */
+ if (strstr(reply, "\nCould not open ")) {
+ qemuReportError(VIR_ERR_OPERATION_FAILED,
+ _("could not change media on %s: %s"), devname,
reply);
+ goto cleanup;
+ }
ret = 0;
--
Ryan Harper
Software Engineer; Linux Technology Center
IBM Corp., Austin, Tx
ryanh(a)us.ibm.com