Re: [libvirt] Problems with attach-device/detach-device using libvirt 0.7.6

[Rolf Eike Beer]

I wrote:

[Problems attaching and detaching PCI devices]

Ok, today I was working on that again and USB attaching was found to be 
completely broken, too. Please drop my libvirt-0.7.6-null-pci-id.patch patch 
from the previous mail and use libvirt-0.7.6-null-device-id.patch instead: USB 
has the very same problem.

The read problem was indeed that attaching USB devices used "pci-attach" as 
qemu command instead of "usb_add": libvirt-0.7.6-usb-attach.patch comes to 
help out. And I think it's rather confusing to get messages about errors in 
PCI device configuration when it's in fact an USB device. This had nothing to 
do with my problem, but I found that and libvirt-0.7.6-usb-messages.patch 
fixes it.

Eike

diff -aurp libvirt-0.7.6-orig/src/qemu/qemu_conf.c libvirt-0.7.6/src/qemu/qemu_conf.c
--- libvirt-0.7.6-orig/src/qemu/qemu_conf.c	2010-02-03 17:56:38.000000000 +0100
+++ libvirt-0.7.6/src/qemu/qemu_conf.c	2010-03-01 16:35:21.000000000 +0100
@@ -2690,7 +2690,8 @@ qemuBuildPCIHostdevDevStr(virDomainHostd
                       dev->source.subsys.u.pci.bus,
                       dev->source.subsys.u.pci.slot,
                       dev->source.subsys.u.pci.function);
-    virBufferVSprintf(&buf, ",id=%s", dev->info.alias);
+    if (dev->info.alias != NULL)
+        virBufferVSprintf(&buf, ",id=%s", dev->info.alias);
     if (qemuBuildDeviceAddressStr(&buf, &dev->info) < 0)
         goto error;
 
@@ -2734,11 +2735,12 @@ qemuBuildUSBHostdevDevStr(virDomainHostd
         return NULL;
     }
 
-    if (virAsprintf(&ret, "usb-host,hostbus=%.3d,hostaddr=%.3d,id=%s",
+    if (virAsprintf(&ret, "usb-host,hostbus=%.3d,hostaddr=%.3d",
                     dev->source.subsys.u.usb.bus,
-                    dev->source.subsys.u.usb.device,
-                    dev->info.alias) < 0)
+                    dev->source.subsys.u.usb.device) < 0)
         virReportOOMError(NULL);
+    if (dev->info.alias != NULL)
+        virBufferVSprintf(&ret, ",id=%s", dev->info.alias);
 
     return ret;
 }

diff -aurp libvirt-0.7.6-orig/src/qemu/qemu_driver.c libvirt-0.7.6/src/qemu/qemu_driver.c
--- libvirt-0.7.6-orig/src/qemu/qemu_driver.c	2010-02-03 16:56:00.000000000 +0100
+++ libvirt-0.7.6/src/qemu/qemu_driver.c	2010-03-01 16:32:26.000000000 +0100
@@ -5831,7 +5831,7 @@ static int qemudDomainAttachHostUsbDevic
     char *devstr = NULL;
 
     if ((qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) &&
-        !(devstr = qemuBuildPCIHostdevDevStr(hostdev)))
+        !(devstr = qemuBuildUSBHostdevDevStr(hostdev)))
         goto error;
 
     if (VIR_REALLOC_N(vm->def->hostdevs, vm->def->nhostdevs+1) < 0) {

diff -aurp libvirt-0.7.6-orig/src/qemu/qemu_conf.c libvirt-0.7.6/src/qemu/qemu_conf.c
--- libvirt-0.7.6-orig/src/qemu/qemu_conf.c	2010-02-03 17:56:38.000000000 +0100
+++ libvirt-0.7.6/src/qemu/qemu_conf.c	2010-03-01 16:35:21.000000000 +0100
@@ -4776,7 +4776,7 @@ qemuParseCommandLineUSB(virConnectPtr co
 
     if (!STRPREFIX(val, "host:")) {
         qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
-                         _("unknown PCI device syntax '%s'"), val);
+                         _("unknown USB device syntax '%s'"), val);
         VIR_FREE(def);
         goto cleanup;
     }
@@ -4792,21 +4792,21 @@ qemuParseCommandLineUSB(virConnectPtr co
         start = end + 1;
         if (virStrToLong_i(start, NULL, 16, &second) < 0) {
             qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
-                             _("cannot extract PCI device product '%s'"), val);
+                             _("cannot extract USB device product '%s'"), val);
             VIR_FREE(def);
             goto cleanup;
         }
     } else {
         if (virStrToLong_i(start, &end, 10, &first) < 0 || !end || *end != '.') {
             qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
-                             _("cannot extract PCI device bus '%s'"), val);
+                             _("cannot extract USB device bus '%s'"), val);
             VIR_FREE(def);
             goto cleanup;
         }
         start = end + 1;
         if (virStrToLong_i(start, NULL, 10, &second) < 0) {
             qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
-                             _("cannot extract PCI device address '%s'"), val);
+                             _("cannot extract USB device address '%s'"), val);
             VIR_FREE(def);
             goto cleanup;
         }

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