Bug 1363768
| Summary: | [Q35] Support pci-bridge | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Marcel Apfelbaum <marcel> |
| Component: | qemu-kvm-rhev | Assignee: | Marcel Apfelbaum <marcel> |
| Status: | CLOSED WONTFIX | QA Contact: | jingzhao <jinzhao> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 7.3 | CC: | chayang, juzhang, knoel, laine, marcel, virt-maint, yduan |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: |
PCI bridge is usable in Q35, but not tested yet.
|
Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2018-04-26 13:11:48 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
|
Description
Marcel Apfelbaum
2016-08-03 13:58:41 UTC
Hi Marcel As QE understanding, PCI-Bridge should be used on q35 with following scenario: [1] pcie bus -- i82801b11-bridge -- pci bridge -- devices [2] pcie bus --- root port -- pci bridge -- devices [3] pcie bus --- root port --upstream port -- downstream port -- pci bridge -- devices and I think the [1] is the common connected method for the PCI devices Am I right? Could you share more usage info with QE ? I tested it on Q35 with above test scenario, and found the disk didn't be found in guest (bug1358665) Thanks Jing Zhao > --- Comment #1 from jingzhao <jinzhao> --- > Hi Marcel > > As QE understanding, PCI-Bridge should be used on q35 with following > scenario: > > [1] pcie bus -- i82801b11-bridge -- pci bridge -- devices this is the only supported way. if you need more pci-bridges use: a. pcie bus -- i82801b11-bridge -- pci bridge -- pci bridge ... b. use several i82801b11-bridges > > [2] pcie bus --- root port -- pci bridge -- devices > it may work, but not supported. theoretically you need a pcie-to-pci bridge for this. we don't have an emulation for it. > [3] pcie bus --- root port --upstream port -- downstream port -- pci bridge > -- devices > same as [2] - not supported > and I think the [1] is the common connected method for the PCI devices > > Am I right? Could you share more usage info with QE ? > You are right. Please try to think like this: we don't want to mix pci and pcie hierarchies. > I tested it on Q35 with above test scenario, and found the disk didn't be found > in guest (bug1358665) > If with [1] works, please close the BZ and *verify* libvirt doesn't allow [2] and [3]. If it does, please open a libvirt bz and cc me. Thanks, Marcel > Thanks > Jing Zhao > Hi Marcel
As your comments, I tried it with qemu-kvm-rhev-2.6.0-19.el7.x86_64 and it works, following is the detailed steps
1. boot guest with following cli:
/usr/libexec/qemu-kvm \
-M q35 \
-cpu SandyBridge \
-nodefaults -rtc base=utc \
-m 4G \
-smp 2,sockets=2,cores=1,threads=1 \
-enable-kvm \
-name rhel7.3 \
-uuid 990ea161-6b67-47b2-b803-19fb01d30d12 \
-smbios type=1,manufacturer='Red Hat',product='RHEV Hypervisor',version=el6,serial=koTUXQrb,uuid=feebc8fd-f8b0-4e75-abc3-e63fcdb67170 \
-k en-us \
-serial unix:/tmp/serial0,server,nowait \
-boot menu=on \
-bios /usr/share/seabios/bios.bin \
-chardev file,path=/home/seabios.log,id=seabios \
-device isa-debugcon,chardev=seabios,iobase=0x402 \
-qmp tcp::8887,server,nowait \
-vga qxl \
-spice port=5932,disable-ticketing \
-device ioh3420,id=root.0,slot=1 \
-drive file=/home/q35-seabios.qcow2,if=none,id=drive-virtio-disk0,format=qcow2,cache=none,werror=stop,rerror=stop \
-device virtio-blk-pci,bus=root.0,drive=drive-virtio-disk0,id=virtio-disk0,disable-legacy=on,disable-modern=off,bootindex=1 \
-device i82801b11-bridge,bus=pcie.0,id=bridge1 \
-device pci-bridge,bus=bridge1,id=bridge2,chassis_nr=1 \
-drive file=/home/pci-block1.qcow2,if=none,id=pci-block1,format=qcow2,cache=none,werror=stop,rerror=stop \
-device virtio-blk-pci,bus=bridge2,drive=pci-block1,id=pciblock1,addr=0x6.0 \
-drive file=/home/pci-block2.qcow2,if=none,id=pci-block2,format=qcow2,cache=none,werror=stop,rerror=stop \
-device virtio-blk-pci,bus=bridge2,drive=pci-block2,id=pciblock2,addr=0x7.0 \
-device i82801b11-bridge,bus=pcie.0,id=bridge3 \
-device pci-bridge,bus=bridge3,id=bridge4,chassis_nr=2 \
-drive file=/home/pci-block3.qcow2,if=none,id=pci-block3,format=qcow2,cache=none,werror=stop,rerror=stop \
-device virtio-blk-pci,bus=bridge3,drive=pci-block3,id=pciblock3,addr=0x8.0 \
-device ioh3420,id=root.2,slot=3 \
-device virtio-net-pci,bus=root.2,netdev=tap10,mac=9a:6a:6b:6c:6d:6e,disable-legacy=on,disable-modern=off -netdev tap,id=tap10 \
-monitor stdio \
2.check the info through hmp:
....
dev: i82801b11-bridge, id "bridge3"
addr = 04.0
romfile = ""
rombar = 1 (0x1)
multifunction = false
command_serr_enable = true
x-pcie-lnksta-dllla = true
class PCI bridge, addr 00:04.0, pci id 8086:244e (sub 0000:0000)
bus: bridge3
type PCI
dev: virtio-blk-pci, id "pciblock3"
class = 0 (0x0)
ioeventfd = true
vectors = 2 (0x2)
virtio-pci-bus-master-bug-migration = false
disable-legacy = "off"
disable-modern = false
migrate-extra = true
modern-pio-notify = false
x-disable-pcie = false
addr = 08.0
romfile = ""
rombar = 1 (0x1)
multifunction = false
command_serr_enable = true
x-pcie-lnksta-dllla = true
class SCSI controller, addr 04:08.0, pci id 1af4:1001 (sub 1af4:0002)
bar 0: i/o at 0xd000 [0xd03f]
bar 1: mem at 0xf8201000 [0xf8201fff]
bar 4: mem at 0xfb800000 [0xfbffffff]
bus: virtio-bus
type virtio-pci-bus
dev: virtio-blk-device, id ""
drive = "pci-block3"
logical_block_size = 512 (0x200)
physical_block_size = 512 (0x200)
min_io_size = 0 (0x0)
opt_io_size = 0 (0x0)
discard_granularity = 4294967295 (0xffffffff)
cyls = 16383 (0x3fff)
heads = 16 (0x10)
secs = 63 (0x3f)
serial = ""
config-wce = true
scsi = false
request-merging = true
indirect_desc = true
event_idx = true
notify_on_empty = true
any_layout = true
dev: pci-bridge, id "bridge4"
chassis_nr = 2 (0x2)
msi = true
shpc = true
addr = 00.0
romfile = ""
rombar = 1 (0x1)
multifunction = false
command_serr_enable = true
x-pcie-lnksta-dllla = true
class PCI bridge, addr 04:00.0, pci id 1b36:0001 (sub 0000:0000)
bar 0: mem at 0xf8200000 [0xf82000ff]
bus: bridge4
type PCI
dev: i82801b11-bridge, id "bridge1"
addr = 03.0
romfile = ""
rombar = 1 (0x1)
multifunction = false
command_serr_enable = true
x-pcie-lnksta-dllla = true
class PCI bridge, addr 00:03.0, pci id 8086:244e (sub 0000:0000)
bus: bridge1
type PCI
dev: pci-bridge, id "bridge2"
chassis_nr = 1 (0x1)
msi = true
shpc = true
addr = 00.0
romfile = ""
rombar = 1 (0x1)
multifunction = false
command_serr_enable = true
x-pcie-lnksta-dllla = true
class PCI bridge, addr 02:00.0, pci id 1b36:0001 (sub 0000:0000)
bar 0: mem at 0xf8600000 [0xf86000ff]
bus: bridge2
type PCI
dev: virtio-blk-pci, id "pciblock2"
class = 0 (0x0)
ioeventfd = true
vectors = 2 (0x2)
virtio-pci-bus-master-bug-migration = false
disable-legacy = "off"
disable-modern = false
migrate-extra = true
modern-pio-notify = false
x-disable-pcie = false
addr = 07.0
romfile = ""
rombar = 1 (0x1)
multifunction = false
command_serr_enable = true
x-pcie-lnksta-dllla = true
class SCSI controller, addr 03:07.0, pci id 1af4:1001 (sub 1af4:0002)
bar 0: i/o at 0xe040 [0xe07f]
bar 1: mem at 0xf8401000 [0xf8401fff]
bar 4: mem at 0xfd000000 [0xfd7fffff]
bus: virtio-bus
type virtio-pci-bus
dev: virtio-blk-device, id ""
drive = "pci-block2"
logical_block_size = 512 (0x200)
physical_block_size = 512 (0x200)
min_io_size = 0 (0x0)
opt_io_size = 0 (0x0)
discard_granularity = 4294967295 (0xffffffff)
cyls = 10402 (0x28a2)
heads = 16 (0x10)
secs = 63 (0x3f)
serial = ""
config-wce = true
scsi = false
request-merging = true
indirect_desc = true
event_idx = true
notify_on_empty = true
any_layout = true
dev: virtio-blk-pci, id "pciblock1"
class = 0 (0x0)
ioeventfd = true
vectors = 2 (0x2)
virtio-pci-bus-master-bug-migration = false
disable-legacy = "off"
disable-modern = false
migrate-extra = true
modern-pio-notify = false
x-disable-pcie = false
addr = 06.0
romfile = ""
rombar = 1 (0x1)
multifunction = false
command_serr_enable = true
x-pcie-lnksta-dllla = true
class SCSI controller, addr 03:06.0, pci id 1af4:1001 (sub 1af4:0002)
bar 0: i/o at 0xe000 [0xe03f]
bar 1: mem at 0xf8400000 [0xf8400fff]
bar 4: mem at 0xfc800000 [0xfcffffff]
bus: virtio-bus
type virtio-pci-bus
dev: virtio-blk-device, id ""
drive = "pci-block1"
logical_block_size = 512 (0x200)
physical_block_size = 512 (0x200)
min_io_size = 0 (0x0)
opt_io_size = 0 (0x0)
discard_granularity = 4294967295 (0xffffffff)
cyls = 16383 (0x3fff)
heads = 16 (0x10)
secs = 63 (0x3f)
serial = ""
config-wce = true
scsi = false
request-merging = true
indirect_desc = true
event_idx = true
notify_on_empty = true
any_layout = true
3. check the block info in guest
[root@localhost ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
vda 252:0 0 30G 0 disk
├─vda1 252:1 0 1G 0 part /boot
└─vda2 252:2 0 29G 0 part
├─rhel-root 253:0 0 26G 0 lvm /
└─rhel-swap 253:1 0 3G 0 lvm [SWAP]
vdb 252:16 0 10G 0 disk
vdc 252:32 0 5G 0 disk
vdd 252:48 0 8G 0 disk
[root@localhost ~]# lspci -vvv -t
-[0000:00]-+-00.0 Intel Corporation 82G33/G31/P35/P31 Express DRAM Controller
+-01.0 Red Hat, Inc. QXL paravirtual graphic card
+-02.0-[01]----00.0 Red Hat, Inc Virtio block device
+-03.0-[02-03]----00.0-[03]--+-06.0 Red Hat, Inc Virtio block device
| \-07.0 Red Hat, Inc Virtio block device
+-04.0-[04-05]--+-00.0-[05]--
| \-08.0 Red Hat, Inc Virtio block device
+-05.0-[06]----00.0 Red Hat, Inc Virtio network device
+-1f.0 Intel Corporation 82801IB (ICH9) LPC Interface Controller
+-1f.2 Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 6 port SATA Controller [AHCI mode]
\-1f.3 Intel Corporation 82801I (ICH9 Family) SMBus Controller
[root@localhost ~]# lspci
00:00.0 Host bridge: Intel Corporation 82G33/G31/P35/P31 Express DRAM Controller
00:01.0 VGA compatible controller: Red Hat, Inc. QXL paravirtual graphic card (rev 04)
00:02.0 PCI bridge: Intel Corporation 7500/5520/5500/X58 I/O Hub PCI Express Root Port 0 (rev 02)
00:03.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 92)
00:04.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 92)
00:05.0 PCI bridge: Intel Corporation 7500/5520/5500/X58 I/O Hub PCI Express Root Port 0 (rev 02)
00:1f.0 ISA bridge: Intel Corporation 82801IB (ICH9) LPC Interface Controller (rev 02)
00:1f.2 SATA controller: Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 6 port SATA Controller [AHCI mode] (rev 02)
00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 02)
01:00.0 SCSI storage controller: Red Hat, Inc Virtio block device (rev 01)
02:00.0 PCI bridge: Red Hat, Inc. QEMU PCI-PCI bridge
03:06.0 SCSI storage controller: Red Hat, Inc Virtio block device
03:07.0 SCSI storage controller: Red Hat, Inc Virtio block device
04:00.0 PCI bridge: Red Hat, Inc. QEMU PCI-PCI bridge
04:08.0 SCSI storage controller: Red Hat, Inc Virtio block device
06:00.0 Ethernet controller: Red Hat, Inc Virtio network device (rev 01)
Is it enough ?
Thanks
Jing Zhao
(In reply to Marcel Apfelbaum from comment #2) > > --- Comment #1 from jingzhao <jinzhao> --- > > Hi Marcel > > > > As QE understanding, PCI-Bridge should be used on q35 with following > > scenario: > > > > [1] pcie bus -- i82801b11-bridge -- pci bridge -- devices > > this is the only supported way. if you need more pci-bridges > use: > a. pcie bus -- i82801b11-bridge -- pci bridge -- pci bridge ... > b. use several i82801b11-bridges > > > > > [2] pcie bus --- root port -- pci bridge -- devices > > > > it may work, but not supported. theoretically you need a pcie-to-pci bridge > for this. > we don't have an emulation for it. > > > [3] pcie bus --- root port --upstream port -- downstream port -- pci bridge > > -- devices > > > > same as [2] - not supported > > > and I think the [1] is the common connected method for the PCI devices > > > > Am I right? Could you share more usage info with QE ? > > > > You are right. > Please try to think like this: we don't want to mix pci and pcie hierarchies. > > > > I tested it on Q35 with above test scenario, and found the disk didn't be found > > in guest (bug1358665) > > > > If with [1] works, please close the BZ and *verify* libvirt doesn't allow > [2] and [3]. > If it does, please open a libvirt bz and cc me. about [2] and [3], bz1362648 can track the issue Thanks Jing Zhao > > Thanks, > Marcel > > > Thanks > > Jing Zhao > > Just as it does with legacy PCI endpoint devices, libvirt will never auto-assign a pci-bridge to plug into anything except a dmi-to-pci-bridge or another pci-bridge. However, there are existing configurations in the wild that, e.g., plug a pci-bridge directly into pcie-root, and this reportedly does work. For that reason, if you specifically ask for it, libvirt will not deny you. This is not considered a bug, but is rather left in place both for compatibility with existing configs, and for a fallback in case a dmi-to-pci-bridge isn't a possibility. In the end, if it works, libvirt allows it but doesn't suggest it (we've discussed the possibility of "tainting" the domain in those cases, for whatever good that might do); if it doesn't work, libvirt will prohibit it when you ask for it. (In reply to jingzhao from comment #3) > Hi Marcel > > As your comments, I tried it with qemu-kvm-rhev-2.6.0-19.el7.x86_64 and it > works, following is the detailed steps > > 1. boot guest with following cli: > /usr/libexec/qemu-kvm \ > -M q35 \ > -cpu SandyBridge \ > -nodefaults -rtc base=utc \ > -m 4G \ > -smp 2,sockets=2,cores=1,threads=1 \ > -enable-kvm \ > -name rhel7.3 \ > -uuid 990ea161-6b67-47b2-b803-19fb01d30d12 \ > -smbios type=1,manufacturer='Red Hat',product='RHEV > Hypervisor',version=el6,serial=koTUXQrb,uuid=feebc8fd-f8b0-4e75-abc3- > e63fcdb67170 \ > -k en-us \ > -serial unix:/tmp/serial0,server,nowait \ > -boot menu=on \ > -bios /usr/share/seabios/bios.bin \ > -chardev file,path=/home/seabios.log,id=seabios \ > -device isa-debugcon,chardev=seabios,iobase=0x402 \ > -qmp tcp::8887,server,nowait \ > -vga qxl \ > -spice port=5932,disable-ticketing \ > -device ioh3420,id=root.0,slot=1 \ > -drive > file=/home/q35-seabios.qcow2,if=none,id=drive-virtio-disk0,format=qcow2, > cache=none,werror=stop,rerror=stop \ > -device > virtio-blk-pci,bus=root.0,drive=drive-virtio-disk0,id=virtio-disk0,disable- > legacy=on,disable-modern=off,bootindex=1 \ > -device i82801b11-bridge,bus=pcie.0,id=bridge1 \ > -device pci-bridge,bus=bridge1,id=bridge2,chassis_nr=1 \ > -drive > file=/home/pci-block1.qcow2,if=none,id=pci-block1,format=qcow2,cache=none, > werror=stop,rerror=stop \ > -device virtio-blk-pci,bus=bridge2,drive=pci-block1,id=pciblock1,addr=0x6.0 \ > -drive > file=/home/pci-block2.qcow2,if=none,id=pci-block2,format=qcow2,cache=none, > werror=stop,rerror=stop \ > -device virtio-blk-pci,bus=bridge2,drive=pci-block2,id=pciblock2,addr=0x7.0 \ > -device i82801b11-bridge,bus=pcie.0,id=bridge3 \ > -device pci-bridge,bus=bridge3,id=bridge4,chassis_nr=2 \ > -drive > file=/home/pci-block3.qcow2,if=none,id=pci-block3,format=qcow2,cache=none, > werror=stop,rerror=stop \ > -device virtio-blk-pci,bus=bridge3,drive=pci-block3,id=pciblock3,addr=0x8.0 \ > -device ioh3420,id=root.2,slot=3 \ > -device > virtio-net-pci,bus=root.2,netdev=tap10,mac=9a:6a:6b:6c:6d:6e,disable- > legacy=on,disable-modern=off -netdev tap,id=tap10 \ > -monitor stdio \ > > 2.check the info through hmp: > > .... > dev: i82801b11-bridge, id "bridge3" > addr = 04.0 > romfile = "" > rombar = 1 (0x1) > multifunction = false > command_serr_enable = true > x-pcie-lnksta-dllla = true > class PCI bridge, addr 00:04.0, pci id 8086:244e (sub 0000:0000) > bus: bridge3 > type PCI > dev: virtio-blk-pci, id "pciblock3" > class = 0 (0x0) > ioeventfd = true > vectors = 2 (0x2) > virtio-pci-bus-master-bug-migration = false > disable-legacy = "off" > disable-modern = false > migrate-extra = true > modern-pio-notify = false > x-disable-pcie = false > addr = 08.0 > romfile = "" > rombar = 1 (0x1) > multifunction = false > command_serr_enable = true > x-pcie-lnksta-dllla = true > class SCSI controller, addr 04:08.0, pci id 1af4:1001 (sub > 1af4:0002) > bar 0: i/o at 0xd000 [0xd03f] > bar 1: mem at 0xf8201000 [0xf8201fff] > bar 4: mem at 0xfb800000 [0xfbffffff] > bus: virtio-bus > type virtio-pci-bus > dev: virtio-blk-device, id "" > drive = "pci-block3" > logical_block_size = 512 (0x200) > physical_block_size = 512 (0x200) > min_io_size = 0 (0x0) > opt_io_size = 0 (0x0) > discard_granularity = 4294967295 (0xffffffff) > cyls = 16383 (0x3fff) > heads = 16 (0x10) > secs = 63 (0x3f) > serial = "" > config-wce = true > scsi = false > request-merging = true > indirect_desc = true > event_idx = true > notify_on_empty = true > any_layout = true > dev: pci-bridge, id "bridge4" > chassis_nr = 2 (0x2) > msi = true > shpc = true > addr = 00.0 > romfile = "" > rombar = 1 (0x1) > multifunction = false > command_serr_enable = true > x-pcie-lnksta-dllla = true > class PCI bridge, addr 04:00.0, pci id 1b36:0001 (sub 0000:0000) > bar 0: mem at 0xf8200000 [0xf82000ff] > bus: bridge4 > type PCI > dev: i82801b11-bridge, id "bridge1" > addr = 03.0 > romfile = "" > rombar = 1 (0x1) > multifunction = false > command_serr_enable = true > x-pcie-lnksta-dllla = true > class PCI bridge, addr 00:03.0, pci id 8086:244e (sub 0000:0000) > bus: bridge1 > type PCI > dev: pci-bridge, id "bridge2" > chassis_nr = 1 (0x1) > msi = true > shpc = true > addr = 00.0 > romfile = "" > rombar = 1 (0x1) > multifunction = false > command_serr_enable = true > x-pcie-lnksta-dllla = true > class PCI bridge, addr 02:00.0, pci id 1b36:0001 (sub 0000:0000) > bar 0: mem at 0xf8600000 [0xf86000ff] > bus: bridge2 > type PCI > dev: virtio-blk-pci, id "pciblock2" > class = 0 (0x0) > ioeventfd = true > vectors = 2 (0x2) > virtio-pci-bus-master-bug-migration = false > disable-legacy = "off" > disable-modern = false > migrate-extra = true > modern-pio-notify = false > x-disable-pcie = false > addr = 07.0 > romfile = "" > rombar = 1 (0x1) > multifunction = false > command_serr_enable = true > x-pcie-lnksta-dllla = true > class SCSI controller, addr 03:07.0, pci id 1af4:1001 (sub > 1af4:0002) > bar 0: i/o at 0xe040 [0xe07f] > bar 1: mem at 0xf8401000 [0xf8401fff] > bar 4: mem at 0xfd000000 [0xfd7fffff] > bus: virtio-bus > type virtio-pci-bus > dev: virtio-blk-device, id "" > drive = "pci-block2" > logical_block_size = 512 (0x200) > physical_block_size = 512 (0x200) > min_io_size = 0 (0x0) > opt_io_size = 0 (0x0) > discard_granularity = 4294967295 (0xffffffff) > cyls = 10402 (0x28a2) > heads = 16 (0x10) > secs = 63 (0x3f) > serial = "" > config-wce = true > scsi = false > request-merging = true > indirect_desc = true > event_idx = true > notify_on_empty = true > any_layout = true > dev: virtio-blk-pci, id "pciblock1" > class = 0 (0x0) > ioeventfd = true > vectors = 2 (0x2) > virtio-pci-bus-master-bug-migration = false > disable-legacy = "off" > disable-modern = false > migrate-extra = true > modern-pio-notify = false > x-disable-pcie = false > addr = 06.0 > romfile = "" > rombar = 1 (0x1) > multifunction = false > command_serr_enable = true > x-pcie-lnksta-dllla = true > class SCSI controller, addr 03:06.0, pci id 1af4:1001 (sub > 1af4:0002) > bar 0: i/o at 0xe000 [0xe03f] > bar 1: mem at 0xf8400000 [0xf8400fff] > bar 4: mem at 0xfc800000 [0xfcffffff] > bus: virtio-bus > type virtio-pci-bus > dev: virtio-blk-device, id "" > drive = "pci-block1" > logical_block_size = 512 (0x200) > physical_block_size = 512 (0x200) > min_io_size = 0 (0x0) > opt_io_size = 0 (0x0) > discard_granularity = 4294967295 (0xffffffff) > cyls = 16383 (0x3fff) > heads = 16 (0x10) > secs = 63 (0x3f) > serial = "" > config-wce = true > scsi = false > request-merging = true > indirect_desc = true > event_idx = true > notify_on_empty = true > any_layout = true > > 3. check the block info in guest > > [root@localhost ~]# lsblk > NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT > vda 252:0 0 30G 0 disk > ├─vda1 252:1 0 1G 0 part /boot > └─vda2 252:2 0 29G 0 part > ├─rhel-root 253:0 0 26G 0 lvm / > └─rhel-swap 253:1 0 3G 0 lvm [SWAP] > vdb 252:16 0 10G 0 disk > vdc 252:32 0 5G 0 disk > vdd 252:48 0 8G 0 disk > [root@localhost ~]# lspci -vvv -t > -[0000:00]-+-00.0 Intel Corporation 82G33/G31/P35/P31 Express DRAM > Controller > +-01.0 Red Hat, Inc. QXL paravirtual graphic card > +-02.0-[01]----00.0 Red Hat, Inc Virtio block device > +-03.0-[02-03]----00.0-[03]--+-06.0 Red Hat, Inc Virtio block > device > | \-07.0 Red Hat, Inc Virtio block > device > +-04.0-[04-05]--+-00.0-[05]-- > | \-08.0 Red Hat, Inc Virtio block device > +-05.0-[06]----00.0 Red Hat, Inc Virtio network device > +-1f.0 Intel Corporation 82801IB (ICH9) LPC Interface Controller > +-1f.2 Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 6 port SATA > Controller [AHCI mode] > \-1f.3 Intel Corporation 82801I (ICH9 Family) SMBus Controller > [root@localhost ~]# lspci > 00:00.0 Host bridge: Intel Corporation 82G33/G31/P35/P31 Express DRAM > Controller > 00:01.0 VGA compatible controller: Red Hat, Inc. QXL paravirtual graphic > card (rev 04) > 00:02.0 PCI bridge: Intel Corporation 7500/5520/5500/X58 I/O Hub PCI Express > Root Port 0 (rev 02) > 00:03.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 92) > 00:04.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 92) > 00:05.0 PCI bridge: Intel Corporation 7500/5520/5500/X58 I/O Hub PCI Express > Root Port 0 (rev 02) > 00:1f.0 ISA bridge: Intel Corporation 82801IB (ICH9) LPC Interface > Controller (rev 02) > 00:1f.2 SATA controller: Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 6 > port SATA Controller [AHCI mode] (rev 02) > 00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev > 02) > 01:00.0 SCSI storage controller: Red Hat, Inc Virtio block device (rev 01) > 02:00.0 PCI bridge: Red Hat, Inc. QEMU PCI-PCI bridge > 03:06.0 SCSI storage controller: Red Hat, Inc Virtio block device > 03:07.0 SCSI storage controller: Red Hat, Inc Virtio block device > 04:00.0 PCI bridge: Red Hat, Inc. QEMU PCI-PCI bridge > 04:08.0 SCSI storage controller: Red Hat, Inc Virtio block device > 06:00.0 Ethernet controller: Red Hat, Inc Virtio network device (rev 01) > > Is it enough ? > Yes, Thanks, Marcel > Thanks > Jing Zhao |