[PATCH 12/12] qemu: command: Explain formatting of 'media=cdrom' in -drive

[Peter Krempa <pkrempa@xxxxxxxxxx>]

That is a frontend attribute but can't be moved.
---
 src/qemu/qemu_command.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 08d96ef562..26ad3fe1af 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -1761,6 +1761,9 @@ qemuBuildDriveStr(virDomainDiskDefPtr disk,
         qemuBuildDiskFrontendAttributes(disk, qemuCaps, bootindex, &opt);
     }

+    /* While this is a frontend attribute, it only makes sense to be used when
+     * legacy -drive is used. In modern qemu the 'ide-cd' or 'scsi-cd' are used.
+     * virtio and other just ignore the attribute anyways */
     if (disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM) {
         if (disk->bus == VIR_DOMAIN_DISK_BUS_SCSI) {
             if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_SCSI_CD))
-- 
2.14.3

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