| Summary: | need to expose PCI address of ivshmem device | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Jincheng Miao <jmiao> |
| Component: | libvirt | Assignee: | Martin Kletzander <mkletzan> |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 7.1 | CC: | dyuan, honzhang, mzhan, rbalakri |
| Target Milestone: | rc | Keywords: | Upstream |
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | libvirt-1.2.17-4.el7 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2015-11-19 05:56:08 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: | |
Fixed upstream with v1.2.17-44-ge309ea665807:
commit e309ea66580798860154c70f275c56236702c7dc
Author: Luyao Huang <lhuang>
AuthorDate: Wed Jun 17 11:56:12 2015 +0800
qemu: Auto assign pci addresses for shared memory devices
Verify it as follows. The result is expected. Move its status to VERIFIED.
# rpm -q libvirt
libvirt-1.2.17-6.el7.x86_64
# virsh edit r7.1
.....
<shmem name='shmem0'>
<size unit='M'>4</size>
</shmem>
......
Domain r7.1 XML configuration edited.
# virsh start r7.1
Domain r7.1 started
# virsh dumpxml r7.1|grep /shmem -B4
<shmem name='shmem0'>
<size unit='M'>4</size>
<alias name='shmem0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
</shmem>
# virsh qemu-monitor-command r7.1 --hmp info pci
Bus 0, device 0, function 0:
Host bridge: PCI device 8086:1237
id ""
Bus 0, device 1, function 0:
ISA bridge: PCI device 8086:7000
id ""
Bus 0, device 1, function 1:
IDE controller: PCI device 8086:7010
BAR4: I/O at 0xc1c0 [0xc1cf].
id ""
Bus 0, device 1, function 3:
Bridge: PCI device 8086:7113
IRQ 9.
id ""
Bus 0, device 2, function 0:
VGA controller: PCI device 1b36:0100
IRQ 10.
BAR0: 32 bit memory at 0xf4000000 [0xf7ffffff].
BAR1: 32 bit memory at 0xf8000000 [0xfbffffff].
BAR2: 32 bit memory at 0xfc054000 [0xfc055fff].
BAR3: I/O at 0xc100 [0xc11f].
BAR6: 32 bit memory at 0xffffffffffffffff [0x0000fffe].
id "video0"
Bus 0, device 3, function 0:
Ethernet controller: PCI device 10ec:8139
IRQ 11.
BAR0: I/O at 0xc000 [0xc0ff].
BAR1: 32 bit memory at 0xfc056000 [0xfc0560ff].
BAR6: 32 bit memory at 0xffffffffffffffff [0x0003fffe].
id "net0"
Bus 0, device 4, function 0:
Audio controller: PCI device 8086:2668
IRQ 11.
BAR0: 32 bit memory at 0xfc050000 [0xfc053fff].
id "sound0"
Bus 0, device 5, function 0:
Class 1920: PCI device 1af4:1003
IRQ 10.
BAR0: I/O at 0xc120 [0xc13f].
BAR1: 32 bit memory at 0xfc057000 [0xfc057fff].
id "virtio-serial0"
Bus 0, device 6, function 0:
USB controller: PCI device 8086:2934
IRQ 10.
BAR4: I/O at 0xc140 [0xc15f].
id ""
Bus 0, device 6, function 1:
USB controller: PCI device 8086:2935
IRQ 11.
BAR4: I/O at 0xc160 [0xc17f].
id ""
Bus 0, device 6, function 2:
USB controller: PCI device 8086:2936
IRQ 11.
BAR4: I/O at 0xc180 [0xc19f].
id ""
Bus 0, device 6, function 7:
USB controller: PCI device 8086:293a
IRQ 10.
BAR0: 32 bit memory at 0xfc058000 [0xfc058fff].
id "usb"
Bus 0, device 7, function 0:
Class 0255: PCI device 1af4:1002
IRQ 11.
BAR0: I/O at 0xc1a0 [0xc1bf].
id "balloon0"
Bus 0, device 9, function 0:
RAM controller: PCI device 1af4:1110
IRQ 10.
BAR0: 32 bit memory at 0xfc059000 [0xfc0590ff].
BAR2: 64 bit prefetchable memory at 0xfe800000 [0xfebfffff].
id ""
# virsh attach-interface r7.1 network default
Interface attached successfully
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHBA-2015-2202.html |
Description of problem: Currently, libvirt doesn't expose PCI address of ivshmem device, so that it causes many problem of hot-(un)plug PCI devices. For example, failed to attach interface for the guest connected to ivshmem server. version: libvirt-1.2.8-6.el7.x86_64 qemu-kvm-rhev-2.1.2-7.el7.x86_64 How reproducible: 100% Step to reproduce: 1. start guest with ivshmem # virsh dumpxml r70 ... <devices> ... <shmem name='shmem0'> <size unit='M'>4</size> </shmem> ... </devices> ... # virsh start r70 2. query guest's PCI devices # virsh qemu-monitor-command r70 --hmp info pci ... Bus 0, device 9, function 0: RAM controller: PCI device 1af4:1110 IRQ 10. BAR0: 32 bit memory at 0xfc05a000 [0xfc05a0ff]. BAR2: 64 bit prefetchable memory at 0xfd000000 [0xfdffffff]. id "" 3. hot-plug a vNIC # virsh attach-interface r70 network default error: Failed to attach interface error: internal error: unable to execute QEMU command 'device_add': Device initialization failed. 4. check from libvirtd.log 2014-11-17 08:49:58.121+0000: 29931: debug : qemuMonitorSend:976 : QEMU_MONITOR_SEND_MSG: mon=0x7f2c94002b50 msg={"execute":"getfd","arguments":{"fdname":"fd-net10"},"id":"libvirt-12"} ... 2014-11-17 08:49:58.123+0000: 29929: debug : qemuMonitorJSONIOProcessLine:201 : QEMU_MONITOR_RECV_REPLY: mon=0x7f2c94002b50 reply={"return": {}, "id": "libvirt-12"} ... 2014-11-17 08:49:58.123+0000: 29931: debug : qemuMonitorSend:976 : QEMU_MONITOR_SEND_MSG: mon=0x7f2c94002b50 msg={"execute":"netdev_add","arguments":{"type":"tap","fd":"fd-net10","id":"hostnet1"},"id":"libvirt-13"} ... 2014-11-17 08:49:58.125+0000: 29929: debug : qemuMonitorJSONIOProcessLine:201 : QEMU_MONITOR_RECV_REPLY: mon=0x7f2c94002b50 reply={"return": {}, "id": "libvirt-13"} ... 2014-11-17 08:49:58.126+0000: 29931: debug : qemuMonitorSend:976 : QEMU_MONITOR_SEND_MSG: mon=0x7f2c94002b50 msg={"execute":"device_add","arguments":{"driver":"rtl8139","netdev":"hostnet1","id":"net1","mac":"52:54:00:cd:5e:12","bus":"pci.0","addr":"0x9"},"id":"libvirt-14"} ... 2014-11-17 08:49:58.129+0000: 29929: debug : qemuMonitorJSONIOProcessLine:201 : QEMU_MONITOR_RECV_REPLY: mon=0x7f2c94002b50 reply={"id": "libvirt-14", "error": {"class": "GenericError", "desc": "Device initialization failed."}} ... 2014-11-17 08:49:58.130+0000: 29931: debug : qemuMonitorSend:976 : QEMU_MONITOR_SEND_MSG: mon=0x7f2c94002b50 msg={"execute":"netdev_del","arguments":{"id":"hostnet1"},"id":"libvirt-15"} ... 2014-11-17 08:49:58.143+0000: 29929: debug : qemuMonitorJSONIOProcessLine:201 : QEMU_MONITOR_RECV_REPLY: mon=0x7f2c94002b50 reply={"return": {}, "id": "libvirt-15"} ... Expect results: expose PCI address of ivshmem device, and make hot-plugging devices working.