Verified on Fuel 9.2 MU-3 (snapshots/9.0-2017-10-09-094324): All 8 volumes were attached to virtio-scsi controller:
------------------------------------------------------------------------------------- <devices> <emulator>/usr/bin/qemu-system-x86_64</emulator> <disk type='file' device='disk'> <driver name='qemu' type='qcow2' cache='none'/> <source file='/var/lib/nova/instances/cd76e051-130e-480a-9eb5-af80e2337dab/disk'/> <backingStore type='file' index='1'> <format type='raw'/> <source file='/var/lib/nova/instances/_base/6ccc5ff78b132fdee6214c3d2b4f233ea1684f56'/> <backingStore/> </backingStore> <target dev='sda' bus='scsi'/> <alias name='scsi0-0-0-0'/> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> <disk type='network' device='disk'> <driver name='qemu' type='raw' cache='writeback'/> <auth username='compute'> <secret type='ceph' uuid='a5d0dd94-57c4-ae55-ffe0-7e3732a24455'/> </auth> <source protocol='rbd' name='volumes/volume-9704a041-696c-4871-9969-a363c49c2aa2'> <host name='10.109.2.2' port='6789'/> </source> <backingStore/> <target dev='sdb' bus='scsi'/> <serial>9704a041-696c-4871-9969-a363c49c2aa2</serial> <alias name='scsi0-0-0-2'/> <address type='drive' controller='0' bus='0' target='0' unit='2'/> </disk> <disk type='network' device='disk'> <driver name='qemu' type='raw' cache='writeback'/> <auth username='compute'> <secret type='ceph' uuid='a5d0dd94-57c4-ae55-ffe0-7e3732a24455'/> </auth> <source protocol='rbd' name='volumes/volume-2a762181-acb8-4325-a768-44ee111b8567'> <host name='10.109.2.2' port='6789'/> </source> <backingStore/> <target dev='sdc' bus='scsi'/> <serial>2a762181-acb8-4325-a768-44ee111b8567</serial> <alias name='scsi0-0-0-3'/> <address type='drive' controller='0' bus='0' target='0' unit='3'/> </disk> <disk type='network' device='disk'> <driver name='qemu' type='raw' cache='writeback'/> <auth username='compute'> <secret type='ceph' uuid='a5d0dd94-57c4-ae55-ffe0-7e3732a24455'/> </auth> <source protocol='rbd' name='volumes/volume-54a2e9c2-ab00-409b-8d7b-340823c89b70'> <host name='10.109.2.2' port='6789'/> </source> <backingStore/> <target dev='sdd' bus='scsi'/> <serial>54a2e9c2-ab00-409b-8d7b-340823c89b70</serial> <alias name='scsi0-0-0-4'/> <address type='drive' controller='0' bus='0' target='0' unit='4'/> </disk> <disk type='network' device='disk'> <driver name='qemu' type='raw' cache='writeback'/> <auth username='compute'> <secret type='ceph' uuid='a5d0dd94-57c4-ae55-ffe0-7e3732a24455'/> </auth> <source protocol='rbd' name='volumes/volume-7de91944-5da7-4128-9978-91d7b8ba3c16'> <host name='10.109.2.2' port='6789'/> </source> <backingStore/> <target dev='sde' bus='scsi'/> <serial>7de91944-5da7-4128-9978-91d7b8ba3c16</serial> <alias name='scsi0-0-0-5'/> <address type='drive' controller='0' bus='0' target='0' unit='5'/> </disk> <disk type='network' device='disk'> <driver name='qemu' type='raw' cache='writeback'/> <auth username='compute'> <secret type='ceph' uuid='a5d0dd94-57c4-ae55-ffe0-7e3732a24455'/> </auth> <source protocol='rbd' name='volumes/volume-b4db0716-ab0c-4be4-ab81-32d65a238eb3'> <host name='10.109.2.2' port='6789'/> </source> <backingStore/> <target dev='sdf' bus='scsi'/> <serial>b4db0716-ab0c-4be4-ab81-32d65a238eb3</serial> <alias name='scsi0-0-0-6'/> <address type='drive' controller='0' bus='0' target='0' unit='6'/> </disk> <disk type='network' device='disk'> <driver name='qemu' type='raw' cache='writeback'/> <auth username='compute'> <secret type='ceph' uuid='a5d0dd94-57c4-ae55-ffe0-7e3732a24455'/> </auth> <source protocol='rbd' name='volumes/volume-e9c9e0cd-6a55-4520-89ec-9894bc6c3eae'> <host name='10.109.2.2' port='6789'/> </source> <backingStore/> <target dev='sdg' bus='scsi'/> <serial>e9c9e0cd-6a55-4520-89ec-9894bc6c3eae</serial> <alias name='scsi0-0-0-7'/> <address type='drive' controller='0' bus='0' target='0' unit='7'/> </disk> <disk type='network' device='disk'> <driver name='qemu' type='raw' cache='writeback'/> <auth username='compute'> <secret type='ceph' uuid='a5d0dd94-57c4-ae55-ffe0-7e3732a24455'/> </auth> <source protocol='rbd' name='volumes/volume-bc24d886-ea40-449e-9587-adc093527e5c'> <host name='10.109.2.2' port='6789'/> </source> <backingStore/> <target dev='sdh' bus='scsi'/> <serial>bc24d886-ea40-449e-9587-adc093527e5c</serial> <alias name='scsi0-0-0-8'/> <address type='drive' controller='0' bus='0' target='0' unit='8'/> </disk> <disk type='network' device='disk'> <driver name='qemu' type='raw' cache='writeback'/> <auth username='compute'> <secret type='ceph' uuid='a5d0dd94-57c4-ae55-ffe0-7e3732a24455'/> </auth> <source protocol='rbd' name='volumes/volume-7b7df856-3c68-423e-955e-4d05f5414a61'> <host name='10.109.2.2' port='6789'/> </source> <backingStore/> <target dev='sdi' bus='scsi'/> <serial>7b7df856-3c68-423e-955e-4d05f5414a61</serial> <alias name='scsi0-0-0-9'/> <address type='drive' controller='0' bus='0' target='0' unit='9'/> </disk> <disk type='file' device='disk'> <driver name='qemu' type='raw' cache='none'/> <source file='/var/lib/nova/instances/cd76e051-130e-480a-9eb5-af80e2337dab/disk.config'/> <backingStore/> <target dev='sdz' bus='scsi'/> <alias name='scsi0-0-0-1'/> <address type='drive' controller='0' bus='0' target='0' unit='1'/> </disk> <controller type='scsi' index='0' model='virtio-scsi'> <alias name='scsi0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </controller> <controller type='usb' index='0'> <alias name='usb'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/> </controller> <controller type='pci' index='0' model='pci-root'> <alias name='pci.0'/> </controller> -------------------------------------------------------------------------------------
Verified on Fuel 9.2 MU-3 (snapshots/ 9.0-2017- 10-09-094324) :
All 8 volumes were attached to virtio-scsi controller:
------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- - /usr/bin/ qemu-system- x86_64< /emulator> var/lib/ nova/instances/ cd76e051- 130e-480a- 9eb5-af80e2337d ab/disk' /> var/lib/ nova/instances/ _base/6ccc5ff78 b132fdee6214c3d 2b4f233ea1684f5 6'/>
<backingStore/ > /backingStore> 0-0-0'/ > 57c4-ae55- ffe0-7e3732a244 55'/> volume- 9704a041- 696c-4871- 9969-a363c49c2a a2'> backingStore/ > serial> 9704a041- 696c-4871- 9969-a363c49c2a a2</serial> 0-0-2'/ > 57c4-ae55- ffe0-7e3732a244 55'/> volume- 2a762181- acb8-4325- a768-44ee111b85 67'> backingStore/ > serial> 2a762181- acb8-4325- a768-44ee111b85 67</serial> 0-0-3'/ > 57c4-ae55- ffe0-7e3732a244 55'/> volume- 54a2e9c2- ab00-409b- 8d7b-340823c89b 70'> backingStore/ > serial> 54a2e9c2- ab00-409b- 8d7b-340823c89b 70</serial> 0-0-4'/ > 57c4-ae55- ffe0-7e3732a244 55'/> volume- 7de91944- 5da7-4128- 9978-91d7b8ba3c 16'> backingStore/ > serial> 7de91944- 5da7-4128- 9978-91d7b8ba3c 16</serial> 0-0-5'/ > 57c4-ae55- ffe0-7e3732a244 55'/> volume- b4db0716- ab0c-4be4- ab81-32d65a238e b3'> backingStore/ > serial> b4db0716- ab0c-4be4- ab81-32d65a238e b3</serial> 0-0-6'/ > 57c4-ae55- ffe0-7e3732a244 55'/> volume- e9c9e0cd- 6a55-4520- 89ec-9894bc6c3e ae'> backingStore/ > serial> e9c9e0cd- 6a55-4520- 89ec-9894bc6c3e ae</serial> 0-0-7'/ > 57c4-ae55- ffe0-7e3732a244 55'/> volume- bc24d886- ea40-449e- 9587-adc093527e 5c'> backingStore/ > serial> bc24d886- ea40-449e- 9587-adc093527e 5c</serial> 0-0-8'/ > 57c4-ae55- ffe0-7e3732a244 55'/> volume- 7b7df856- 3c68-423e- 955e-4d05f5414a 61'> backingStore/ > serial> 7b7df856- 3c68-423e- 955e-4d05f5414a 61</serial> 0-0-9'/ > var/lib/ nova/instances/ cd76e051- 130e-480a- 9eb5-af80e2337d ab/disk. config' /> backingStore/ > 0-0-1'/ > virtio- scsi'> ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- ------- -
<devices>
<emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2' cache='none'/>
<source file='/
<backingStore type='file' index='1'>
<format type='raw'/>
<source file='/
<
<target dev='sda' bus='scsi'/>
<alias name='scsi0-
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<disk type='network' device='disk'>
<driver name='qemu' type='raw' cache='writeback'/>
<auth username='compute'>
<secret type='ceph' uuid='a5d0dd94-
</auth>
<source protocol='rbd' name='volumes/
<host name='10.109.2.2' port='6789'/>
</source>
<
<target dev='sdb' bus='scsi'/>
<
<alias name='scsi0-
<address type='drive' controller='0' bus='0' target='0' unit='2'/>
</disk>
<disk type='network' device='disk'>
<driver name='qemu' type='raw' cache='writeback'/>
<auth username='compute'>
<secret type='ceph' uuid='a5d0dd94-
</auth>
<source protocol='rbd' name='volumes/
<host name='10.109.2.2' port='6789'/>
</source>
<
<target dev='sdc' bus='scsi'/>
<
<alias name='scsi0-
<address type='drive' controller='0' bus='0' target='0' unit='3'/>
</disk>
<disk type='network' device='disk'>
<driver name='qemu' type='raw' cache='writeback'/>
<auth username='compute'>
<secret type='ceph' uuid='a5d0dd94-
</auth>
<source protocol='rbd' name='volumes/
<host name='10.109.2.2' port='6789'/>
</source>
<
<target dev='sdd' bus='scsi'/>
<
<alias name='scsi0-
<address type='drive' controller='0' bus='0' target='0' unit='4'/>
</disk>
<disk type='network' device='disk'>
<driver name='qemu' type='raw' cache='writeback'/>
<auth username='compute'>
<secret type='ceph' uuid='a5d0dd94-
</auth>
<source protocol='rbd' name='volumes/
<host name='10.109.2.2' port='6789'/>
</source>
<
<target dev='sde' bus='scsi'/>
<
<alias name='scsi0-
<address type='drive' controller='0' bus='0' target='0' unit='5'/>
</disk>
<disk type='network' device='disk'>
<driver name='qemu' type='raw' cache='writeback'/>
<auth username='compute'>
<secret type='ceph' uuid='a5d0dd94-
</auth>
<source protocol='rbd' name='volumes/
<host name='10.109.2.2' port='6789'/>
</source>
<
<target dev='sdf' bus='scsi'/>
<
<alias name='scsi0-
<address type='drive' controller='0' bus='0' target='0' unit='6'/>
</disk>
<disk type='network' device='disk'>
<driver name='qemu' type='raw' cache='writeback'/>
<auth username='compute'>
<secret type='ceph' uuid='a5d0dd94-
</auth>
<source protocol='rbd' name='volumes/
<host name='10.109.2.2' port='6789'/>
</source>
<
<target dev='sdg' bus='scsi'/>
<
<alias name='scsi0-
<address type='drive' controller='0' bus='0' target='0' unit='7'/>
</disk>
<disk type='network' device='disk'>
<driver name='qemu' type='raw' cache='writeback'/>
<auth username='compute'>
<secret type='ceph' uuid='a5d0dd94-
</auth>
<source protocol='rbd' name='volumes/
<host name='10.109.2.2' port='6789'/>
</source>
<
<target dev='sdh' bus='scsi'/>
<
<alias name='scsi0-
<address type='drive' controller='0' bus='0' target='0' unit='8'/>
</disk>
<disk type='network' device='disk'>
<driver name='qemu' type='raw' cache='writeback'/>
<auth username='compute'>
<secret type='ceph' uuid='a5d0dd94-
</auth>
<source protocol='rbd' name='volumes/
<host name='10.109.2.2' port='6789'/>
</source>
<
<target dev='sdi' bus='scsi'/>
<
<alias name='scsi0-
<address type='drive' controller='0' bus='0' target='0' unit='9'/>
</disk>
<disk type='file' device='disk'>
<driver name='qemu' type='raw' cache='none'/>
<source file='/
<
<target dev='sdz' bus='scsi'/>
<alias name='scsi0-
<address type='drive' controller='0' bus='0' target='0' unit='1'/>
</disk>
<controller type='scsi' index='0' model='
<alias name='scsi0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</controller>
<controller type='usb' index='0'>
<alias name='usb'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
</controller>
<controller type='pci' index='0' model='pci-root'>
<alias name='pci.0'/>
</controller>
-------