[libvirt] [PATCH] Allow a HTTP URL for cdrom ISO image
Aline Manera
alinefm at linux.vnet.ibm.com
Wed Aug 21 16:47:36 UTC 2013
From: Aline Manera <alinefm at br.ibm.com>
QEMU/KVM already allows an HTTP URL for the cdrom ISO image so add this support
to libvirt as well.
The xml should be as following:
<disk type='network' device='cdrom'>
<source protocol='http' name='/url/path'>
<host name='host.name' port='80'/>
</source>
</disk>
Signed-off-by: Aline Manera <alinefm at br.ibm.com>
---
src/conf/domain_conf.c | 3 +-
src/conf/domain_conf.h | 1 +
src/qemu/qemu_command.c | 20 +++++++++--
.../qemuxml2argv-disk-cdrom-network.args | 5 +++
.../qemuxml2argv-disk-cdrom-network.xml | 37 ++++++++++++++++++++
tests/qemuxml2argvtest.c | 2 ++
6 files changed, 65 insertions(+), 3 deletions(-)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-cdrom-network.args
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-cdrom-network.xml
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index ea49d2c..461cc95 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -261,7 +261,8 @@ VIR_ENUM_IMPL(virDomainDiskProtocol, VIR_DOMAIN_DISK_PROTOCOL_LAST,
"rbd",
"sheepdog",
"gluster",
- "iscsi")
+ "iscsi",
+ "http")
VIR_ENUM_IMPL(virDomainDiskProtocolTransport, VIR_DOMAIN_DISK_PROTO_TRANS_LAST,
"tcp",
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 500a5be..77fa00c 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -540,6 +540,7 @@ enum virDomainDiskProtocol {
VIR_DOMAIN_DISK_PROTOCOL_SHEEPDOG,
VIR_DOMAIN_DISK_PROTOCOL_GLUSTER,
VIR_DOMAIN_DISK_PROTOCOL_ISCSI,
+ VIR_DOMAIN_DISK_PROTOCOL_HTTP,
VIR_DOMAIN_DISK_PROTOCOL_LAST
};
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index f151173..4b1346b 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -3826,6 +3826,14 @@ qemuBuildDriveStr(virConnectPtr conn ATTRIBUTE_UNUSED,
virBufferEscape(&opt, ',', ",", "%s,", disk->src);
}
break;
+
+ case VIR_DOMAIN_DISK_PROTOCOL_HTTP: {
+ virBufferAsprintf(&opt, "http://%s:%s/%s",
+ disk->hosts->name,
+ disk->hosts->port ? disk->hosts->port : "80",
+ disk->src);
+ return virBufferContentAndReset(&opt);
+ }
}
} else if (disk->type == VIR_DOMAIN_DISK_TYPE_VOLUME) {
if (qemuBuildVolumeString(conn, disk, &opt) < 0)
@@ -8090,7 +8098,13 @@ qemuBuildCommandLine(virConnectPtr conn,
break;
}
- virCommandAddArg(cmd, "-drive");
+ if ((disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM) &&
+ (disk->type == VIR_DOMAIN_DISK_TYPE_NETWORK)) {
+ virCommandAddArg(cmd, "-cdrom");
+ }
+ else {
+ virCommandAddArg(cmd, "-drive");
+ }
/* Unfortunately it is not possible to use
-device for floppies, or Xen paravirt
@@ -8135,7 +8149,9 @@ qemuBuildCommandLine(virConnectPtr conn,
? 'B' : 'A',
bootindex);
}
- } else {
+ } else if (disk->device != VIR_DOMAIN_DISK_DEVICE_CDROM ||
+ (disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM &&
+ disk->type != VIR_DOMAIN_DISK_TYPE_NETWORK)) {
virCommandAddArg(cmd, "-device");
if (!(optstr = qemuBuildDriveDevStr(def, disk, bootindex,
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-cdrom-network.args b/tests/qemuxml2argvdata/qemuxml2argv-disk-cdrom-network.args
new file mode 100644
index 0000000..e4e4017
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-disk-cdrom-network.args
@@ -0,0 +1,5 @@
+LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/kvm -S \
+-M pc-1.2 -m 1024 -smp 1 -nographic -nodefaults \
+-monitor unix:/tmp/test-monitor,server,nowait -boot d -usb \
+-cdrom http://mirror.cogentco.com:80//pub/linux/fedora/linux/releases/19/Fedora/x86_64/iso/Fedora-19-x86_64-netinst.iso \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-cdrom-network.xml b/tests/qemuxml2argvdata/qemuxml2argv-disk-cdrom-network.xml
new file mode 100644
index 0000000..464a36f
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-disk-cdrom-network.xml
@@ -0,0 +1,37 @@
+<domain type='kvm'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>1048576</memory>
+ <currentMemory unit='KiB'>1048576</currentMemory>
+ <vcpu placement='static'>1</vcpu>
+ <os>
+ <type arch='x86_64' machine='pc-1.2'>hvm</type>
+ <boot dev='cdrom'/>
+ </os>
+ <features>
+ <acpi/>
+ <apic/>
+ <pae/>
+ </features>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>restart</on_crash>
+ <devices>
+ <emulator>/usr/bin/kvm</emulator>
+ <disk type='network' device='cdrom'>
+ <driver name='qemu' type='raw'/>
+ <source protocol='http' name='/pub/linux/fedora/linux/releases/19/Fedora/x86_64/iso/Fedora-19-x86_64-netinst.iso'>
+ <host name='mirror.cogentco.com' port='80'/>
+ </source>
+ <target dev='hdc' bus='ide'/>
+ <readonly/>
+ <alias name='ide0-1-0'/>
+ <address type='drive' controller='0' bus='1' target='0' unit='0'/>
+ </disk>
+ <controller type='usb' index='0'/>
+ <controller type='pci' index='0' model='pci-root'/>
+ <controller type='ide' index='0'/>
+ <memballoon model='virtio'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 3a3c304..aeb1b4d 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -443,6 +443,8 @@ mymain(void)
DO_TEST("hugepages", QEMU_CAPS_MEM_PATH);
DO_TEST("nosharepages", QEMU_CAPS_MACHINE_OPT, QEMU_CAPS_MEM_MERGE);
DO_TEST("disk-cdrom", NONE);
+ DO_TEST("disk-cdrom-network", QEMU_CAPS_KVM, QEMU_CAPS_DEVICE,
+ QEMU_CAPS_DRIVE);
DO_TEST("disk-cdrom-empty", QEMU_CAPS_DRIVE);
DO_TEST("disk-cdrom-tray",
QEMU_CAPS_DRIVE, QEMU_CAPS_DEVICE, QEMU_CAPS_VIRTIO_TX_ALG);
--
1.7.10.4
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