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libvirt/tests/qemuxml2argvdata/qemuxml2argv-disk-scsi-lun-passthrough-sgio.xml

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conf: Parse and format the new XML Like "rawio", "sgio" is only allowed for block disk of device type "lun". It doesn't default disk->sgio to "filtered" when parsing, as it won't be able to distinguish explicitly requested "filtered" and a default "filtered" in driver then. We have to error out for explicit request when the kernel doesn't support the new sysfs knob "unpriv_sgio", however, for defaulted "filtered", we can just ignore it if the kernel doesn't support "unpriv_sgio".
2013-01-02 14:37:09 +00:00
<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='lun' rawio='no' sgio='unfiltered'>
<source dev='/dev/HostVG/QEMUGuest1'/>
<target dev='hda' bus='scsi'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<disk type='block' device='lun' sgio='filtered'>
<source dev='/dev/HostVG/QEMUGuest2'/>
disk: Disallow duplicated target 'dev' values https://bugzilla.redhat.com/show_bug.cgi?id=1142631 This patch resolves a situation where the same "<target dev='$name'...>" can be used for multiple disks in the domain. While the $name is "mostly" advisory regarding the expected order that the disk is added to the domain and not guaranteed to map to the device name in the guest OS, it still should be unique enough such that other domblk* type operations can be performed. Without the patch, the domblklist will list the same Target twice: $ virsh domblklist $dom Target Source ------------------------------------------------ sda /var/lib/libvirt/images/file.qcow2 sda /var/lib/libvirt/images/file.img Additionally, getting domblkstat, domblkerror, domblkinfo, and other block* type calls will not be able to reference the second target. Fortunately, hotplug disallows adding a "third" sda value: $ qemu-img create -f raw /var/lib/libvirt/images/file2.img 10M $ virsh attach-disk $dom /var/lib/libvirt/images/file2.img sda error: Failed to attach disk error: operation failed: target sda already exists $ BUT, it since 'sdb' doesn't exist one would get the following on the same hotplug attempt, but changing to use 'sdb' instead of 'sda' $ virsh attach-disk $dom /var/lib/libvirt/images/file2.img sdb error: Failed to attach disk error: internal error: unable to execute QEMU command 'device_add': Duplicate ID 'scsi0-0-1' for device $ Since we cannot fix this issue at parsing time, the best that can be done so as to not "lose" a domain is to make the check prior to starting the guest with the results as follows: $ virsh start $dom error: Failed to start domain $dom error: XML error: target 'sda' duplicated for disk sources '/var/lib/libvirt/images/file.qcow2' and '/var/lib/libvirt/images/file.img' $ Running 'make check' found a few more instances in the tests where this duplicated target dev value was being used. These also exhibited some duplicated 'id=' values (negating the uniqueness argument of aliases) in the corresponding .args file and of course the *xmlout version of a few input XML files.
2015-02-26 17:20:01 +00:00
<target dev='hdb' bus='scsi'/>
conf: Parse and format the new XML Like "rawio", "sgio" is only allowed for block disk of device type "lun". It doesn't default disk->sgio to "filtered" when parsing, as it won't be able to distinguish explicitly requested "filtered" and a default "filtered" in driver then. We have to error out for explicit request when the kernel doesn't support the new sysfs knob "unpriv_sgio", however, for defaulted "filtered", we can just ignore it if the kernel doesn't support "unpriv_sgio".
2013-01-02 14:37:09 +00:00
<address type='drive' controller='0' bus='0' target='1' unit='1'/>
</disk>
<controller type='scsi' index='0' model='virtio-scsi'/>
<controller type='scsi' index='1' model='lsilogic'/>
<controller type='usb' index='0'/>
qemu: auto-add pci-root controller for pc machine types <controller type='pci' index='0' model='pci-root'/> is auto-added to pc* machine types. Without this controller PCI bus 0 is not available and no PCI addresses are assigned by default. Since older libvirt supported PCI bus 0 even without this controller, it is removed from the XML when migrating.
2013-04-22 12:16:13 +00:00
<controller type='pci' index='0' model='pci-root'/>
device: cleanup input device code The current code was a little bit odd. At first we've removed all possible implicit input devices from domain definition to add them later back if there was any graphics device defined while parsing XML description. That's not all, while formating domain definition to XML description we at first ignore any input devices with bus different to USB and VIRTIO and few lines later we add implicit input devices to XML. This seems to me as a lot of code for nothing. This patch may look to be more complicated than original approach, but this is a preferred way to modify/add driver specific stuff only in those drivers and not deal with them in common parsing/formating functions. The update is to add those implicit input devices into config XML to follow the real HW configuration visible by guest OS. There was also inconsistence between our behavior and QEMU's in the way, that in QEMU there is no way how to disable those implicit input devices for x86 architecture and they are available always, even without graphics device. This applies also to XEN hypervisor. VZ driver already does its part by putting correct implicit devices into live XML. Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2016-01-11 11:40:32 +00:00
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
conf: Parse and format the new XML Like "rawio", "sgio" is only allowed for block disk of device type "lun". It doesn't default disk->sgio to "filtered" when parsing, as it won't be able to distinguish explicitly requested "filtered" and a default "filtered" in driver then. We have to error out for explicit request when the kernel doesn't support the new sysfs knob "unpriv_sgio", however, for defaulted "filtered", we can just ignore it if the kernel doesn't support "unpriv_sgio".
2013-01-02 14:37:09 +00:00
<memballoon model='virtio'/>
</devices>
</domain>
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