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qemu: support URI syntax for NBD

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QEMU 1.3 and newer support an alternative URI-based syntax to specify
the location of an NBD server.  Libvirt can keep on using the old
syntax in general, but only the URI syntax supports IPv6 addresses.

The URI syntax also supports relative paths to Unix sockets.  These
should never be used but aren't explicitly blocked either by the parser,
so support it just in case.

The URI syntax is intentionally compatible with Gluster's, and the
code can be reused.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Paolo Bonzini
2013-02-25 18:44:25 +01:00
committed by Eric Blake
parent be2a15dd60
commit eebbb232e6
8 changed files with 154 additions and 29 deletions
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2
tests/qemuargv2xmltest.c
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@@ -186,6 +186,8 @@ mymain(void)
DO_TEST("disk-drive-cache-unsafe");
DO_TEST("disk-drive-network-nbd");
DO_TEST("disk-drive-network-nbd-export");
DO_TEST("disk-drive-network-nbd-ipv6");
DO_TEST("disk-drive-network-nbd-ipv6-export");
DO_TEST("disk-drive-network-nbd-unix");
DO_TEST("disk-drive-network-gluster");
DO_TEST("disk-drive-network-rbd");

5
tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-nbd-ipv6-export.args Normal file
View File

@@ -0,0 +1,5 @@
LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M \
pc -m 214 -smp 1 -nographic -monitor unix:/tmp/test-monitor,server,nowait \
-no-acpi -boot c -usb -drive file=/dev/HostVG/QEMUGuest1,if=ide,bus=0,unit=0 \
-drive 'file=nbd+tcp://[::1]:6000/bar,if=virtio,format=raw' -net none \
-serial none -parallel none

33
tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-nbd-ipv6-export.xml Normal file
View File

@@ -0,0 +1,33 @@
<domain type='qemu'>
<name>QEMUGuest1</name>
<uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
<memory unit='KiB'>219136</memory>
<currentMemory unit='KiB'>219136</currentMemory>
<vcpu placement='static'>1</vcpu>
<os>
<type arch='i686' machine='pc'>hvm</type>
<boot dev='hd'/>
</os>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
<emulator>/usr/bin/qemu</emulator>
<disk type='block' device='disk'>
<source dev='/dev/HostVG/QEMUGuest1'/>
<target dev='hda' bus='ide'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<disk type='network' device='disk'>
<driver name='qemu' type='raw'/>
<source protocol='nbd' name='bar'>
<host name='::1' port='6000'/>
</source>
<target dev='vda' bus='virtio'/>
</disk>
<controller type='usb' index='0'/>
<controller type='ide' index='0'/>
<memballoon model='virtio'/>
</devices>
</domain>

5
tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-nbd-ipv6.args Normal file
View File

@@ -0,0 +1,5 @@
LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M \
pc -m 214 -smp 1 -nographic -monitor unix:/tmp/test-monitor,server,nowait \
-no-acpi -boot c -usb -drive file=/dev/HostVG/QEMUGuest1,if=ide,bus=0,unit=0 \
-drive 'file=nbd+tcp://[::1]:6000,if=virtio,format=raw' -net none \
-serial none -parallel none

33
tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-nbd-ipv6.xml Normal file
View File

@@ -0,0 +1,33 @@
<domain type='qemu'>
<name>QEMUGuest1</name>
<uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
<memory unit='KiB'>219136</memory>
<currentMemory unit='KiB'>219136</currentMemory>
<vcpu placement='static'>1</vcpu>
<os>
<type arch='i686' machine='pc'>hvm</type>
<boot dev='hd'/>
</os>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
<emulator>/usr/bin/qemu</emulator>
<disk type='block' device='disk'>
<source dev='/dev/HostVG/QEMUGuest1'/>
<target dev='hda' bus='ide'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<disk type='network' device='disk'>
<driver name='qemu' type='raw'/>
<source protocol='nbd'>
<host name='::1' port='6000'/>
</source>
<target dev='vda' bus='virtio'/>
</disk>
<controller type='usb' index='0'/>
<controller type='ide' index='0'/>
<memballoon model='virtio'/>
</devices>
</domain>

4
tests/qemuxml2argvtest.c
View File

@@ -495,6 +495,10 @@ mymain(void)
QEMU_CAPS_DRIVE, QEMU_CAPS_DRIVE_FORMAT);
DO_TEST("disk-drive-network-nbd-export",
QEMU_CAPS_DRIVE, QEMU_CAPS_DRIVE_FORMAT);
DO_TEST("disk-drive-network-nbd-ipv6",
QEMU_CAPS_DRIVE, QEMU_CAPS_DRIVE_FORMAT);
DO_TEST("disk-drive-network-nbd-ipv6-export",
QEMU_CAPS_DRIVE, QEMU_CAPS_DRIVE_FORMAT);
DO_TEST("disk-drive-network-nbd-unix",
QEMU_CAPS_DRIVE, QEMU_CAPS_DRIVE_FORMAT);
DO_TEST("disk-drive-network-gluster",

2
tests/qemuxml2xmltest.c
View File

@@ -171,6 +171,8 @@ mymain(void)
DO_TEST("disk-drive-cache-v1-none");
DO_TEST("disk-drive-network-nbd");
DO_TEST("disk-drive-network-nbd-export");
DO_TEST("disk-drive-network-nbd-ipv6");
DO_TEST("disk-drive-network-nbd-ipv6-export");
DO_TEST("disk-drive-network-nbd-unix");
DO_TEST("disk-scsi-device");
DO_TEST("disk-scsi-vscsi");