Re: how to enable ceph-rbd in libvirt.

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It sounds like the qemu binary that libvirt is using isn't one
compiled with rbd support. You can check by running:

qemu-kvm -drive format=?

rbd should appear in the list of supported formats.

Josh

On 10/13/2012 01:20 AM, yue wrote:

i try your proposal.  but  there are no any output in qemu-rbd.log.  selinux  has been disabled(then reboot my OS).
i do not know apparmor. my OS has no rpm of apparmor.
my os is centps-6.2.   2.6.32-220.el6.x86_64.
1.would you give me the options of libvirt configure. i rebuild it.
2.if there a other way to confirm whether  libvirt  support rbd.other way to find root cause.

thanks.

----rbd disk----
<disk type='network' device='disk'>
       <driver name='qemu' type='raw' cache='writethrough' io='native'/>
       <auth username='admin'>
         <secret type='ceph' uuid='7a91dc24-b072-43c4-98fb-4b2415322b0f'/>
       </auth>
       <source protocol='rbd' name='cloud/testrbd:debug_ms=1:debug_rbd=20:debug_monc=20:debug_auth=20:log_file=/tmp/qemu-rbd.log'>
         <host name='192.168.10.4' port='6789'/>
       </source>
       <target dev='vda' bus='virtio'/>
       <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
     </disk>
--------------------





At 2012-10-12 15:06:45,"Josh Durgin" <josh.durgin@xxxxxxxxxxx> wrote:

Sorry, I forgot libvirt/qemu eats stderr. The extra logging wasn't
captured.

Could you try:

name='cloud/testrbd:debug_ms=1:debug_rbd=20:debug_monc=10:log_file=/tmp/qemu-rbd.log'

If /tmp/qemu-rbd.log isn't full of debug messages, make sure selinux or
apparmor aren't preventing
qemu from writing to it.

Josh

On 2012-10-11 22:31, yue wrote:

hi, i add debug options related to rbd in xpSP3.xml. but error seems
same with privious.
----libvirtd.log------------------
erfaces
2012-10-12 13:25:28.267+0000: 9023: error : virNodeNumOfDevices:13984
: this function is not supported by the connection driver:
virNodeNumOfDevices
2012-10-12 13:25:29.264+0000: 9025: error :
virConnectNumOfInterfaces:11014 : this function is not supported by
the connection driver: virConnectNumOfInterfaces
2012-10-12 13:25:29.266+0000: 9023: error :
virConnectNumOfDefinedInterfaces:11098 : this function is not
supported by the connection driver: virConnectNumOfDefinedInterfaces
2012-10-12 13:25:29.267+0000: 9022: error : virNodeNumOfDevices:13984
: this function is not supported by the connection driver:
virNodeNumOfDevices
2012-10-12 13:25:30.264+0000: 9025: error :
virConnectNumOfInterfaces:11014 : this f unction is not supported by
the connection driver: virConnectNumOfInterfaces
2012-10-12 13:25:30.267+0000: 9023: error :
virConnectNumOfDefinedInterfaces:11098 : this function is not
supported by the connection driver: virConnectNumOfDefinedInterfaces
2012-10-12 13:25:30.269+0000: 9022: error : virNodeNumOfDevices:13984
: this function is not supported by the connection driver:
virNodeNumOfDevices
2012-10-12 13:25:30.523+0000: 9021: warning : qemuDomainObjTaint:1364
: Domain id=1 name='xpSP3' uuid=b45bd66a-6700-4905-c5f4-4c799413d7b7
is tainted: high-privileges
2012-10-12 13:25:30.943+0000: 9021: error : qemuMonitorOpenUnix:293 :
failed to connect to monitor socket: No such process
2012-10-12 13:25:30.943+0000: 9021: info : qemuConnectMonitor:1247 :
Failed to connect monitor for xpSP3
2012-10-12 13:25:30.943+0000: 9021: error :
qemuProcessWaitForMonitor:1634 : internal error process exited while
connecting to monitor: char device redirected to /dev/pts/4
qemu-kvm: -drive

file=rbd:cloud/testrbd:debug_rbd=20:debug_monc=20:debug_auth=20:log_to_stderr=2:id=admin:key=AQCp1GFQMMOrCxAAEb4jxgUF9BuSBkQIigFi/Q==:auth_supported=cephx;none:mon_host=192.168.10.4:6789,if=none,id=drive-virtio-disk0,format=raw,cache=writethrough,aio=native:
could not open disk image

rbd:cloud/testrbd:debug_rbd=20:debug_monc=20:debug_auth=20:log_to_stderr=2:id=admin:key=AQCp1GFQMMOrCxAAEb4jxgUF9BuSBkQIigFi/Q==:auth_supported=cephx;none:mon_host=192.168.10.4:6789:
No such file or directory

---------xpSP3.log---is attached.---
2012-10-12 13:11:33.133+0000: starting up
LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin HOME=/root USER=root
LOGNAME=root QEMU_AUDIO_DRV=none /usr/libexec/qemu-kvm -name xpSP3 -S
-M rhel6.2.0 -enable-kvm -m 512 -smp 1,sockets=1,cores=1,threads=1
-uuid b45bd66a-6700-4905-c5f4-4c799413d7b7 -nodefconfig -nodefaults
-chardev socket,id=charmonitor,path=/var/lib/libvirt/
qemu/xpSP3.monitor,server,nowait -mon
chardev=charmonitor,id=monitor,mode=readline -rtc
base=localtime,driftfix=slew -device
piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive

file=/var/lib/libvirt/images/xpSP3.img,if=none,id=drive-ide0-0-0,format=raw,cache=none
-device

ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1
-drive

file=rbd:cloud/testrbd:debug_rbd=20:debug_monc=20:debug_auth=20:log_to_stderr=2:id=admin:key=AQCp1GFQMMOrCxAAEb4jxgUF9BuSBkQIigFi/Q==:auth_supported=cephx;none:mon_host=192.168.10.4:6789,if=none,id=drive-virtio-disk0,format=raw,cache=writethrough,aio=native
-device

virtio-blk-pci,scsi=off,bus=pci.0,addr=0x6,drive=drive-virtio-disk0,id=virtio-disk0
-netdev tap,fd=19,id=hostnet0 -device

e1000,netdev=hostnet0,id=net0,mac=52:54:00:2a:8c:48,bus=pci.0,addr=0x3
-chardev pty,id=charserial0 -device
isa-serial,chardev=charserial0,id=serial0 -device
usb-tablet,id=input0
-vnc 0.0.0.0:0 -vga std -device
intel-hda,id=sound0,bus=pci.0,addr=0x4
-device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device
virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5
Domain id=1 is tainted: high-privileges
2012-10-12 13:11:33.144+0000: 7815: debug : virFileClose:72 : Closed
fd 18
2012-10-12 13:11:33.145+0000: 7815: debug : virFileClose:72 : Closed
fd 24
2012-10-12 13:11:33.145+0000: 7815: debug : virFileClose:72 : Closed
fd 3
2012-10-12 13:11:33.146+0000: 7818: debug : virCommandHook:2058 : Run
hook 0x7faa10a62030 0x7faa160d4370
2012-10-12 13:11:33.146+0000: 7818: debug : qemuProcessHook:2589 :
Obtaining domain lock
2012-10-12 13:11:33.146+0000: 7818: debug :
virDomainLockProcessStart:164 : plugin=0x7faa080020a0
dom=0x7faa0804af40 paused=1 fd=0x7faa160d3998
2012-10-12 13:11:33.146+0000: 7818: debug :
virDomainLockManagerNew:123 : plugin=0x7faa080020a0
dom=0x7faa0804af40
withResources=1
2012-10-12 13:11:33.146+0000: 7818: debug :
virLockManagerPluginGetDriver:280 : plugin=0x7faa080020a0
2012-10-12 13:11:33.146+0000: 7818: debug : virLockManagerNew:304 :
driver=0x3712e9cb20 type=0 nparams=4 params=0x7faa160d3830 flags=0
2012-10-12 13:11:33.146+0000: 7818: debug :
virLockManagerLogParams:104 : key=uuid type=uuid
value=b45bd66a-6700-4905-c5f4-4c799413d7b7
2012-10-12 13:11:33.146+0000: 7818: debug :
virLockManagerLogParams:100 : key=name type=string value=xpSP3
2012-10-12 13:11:33.146+0000: 7818: debug :
virLockManagerLogParams:88 : key=id type=uint value=1
2012-10-12 13:11:33.146+0000: 7818: debug :
virLockManagerLogParams:88 : key=pid type=uint value=7818
2012-10-12 13:11:33.146+0000: 7818: debug :
virDomainLockManagerNew:135 : Adding leases
2012-10-12 13:11:33.146+0000: 7818: debug :
virDomainLockManagerNew:140 : Adding disks
2012-10-12 13:11:33.146+0000: 7818: debug :
virDomainLockManagerAddDisk:86 : Add disk
/var/lib/libvirt/images/xpSP3.img
2012-10-12 13:11:33.146+0000: 7818: debug : virLockMan
agerAddResource:333 : lock=0x7faa08060820 type=0
name=/var/lib/libvirt/images/xpSP3.img nparams=0 params=(nil) flags=0
2012-10-12 13:11:33.146+0000: 7818: debug : virLockManagerAcquire:350
: lock=0x7faa08060820 state='(null)' flags=3 fd=0x7faa160d3998
2012-10-12 13:11:33.146+0000: 7818: debug : virLockManagerFree:387 :
lock=0x7faa08060820
2012-10-12 13:11:33.146+0000: 7818: debug : qemuProcessHook:2614 :
Moving process to cgroup
2012-10-12 13:11:33.146+0000: 7818: debug : virCgroupNew:617 : New
group /libvirt/qemu/xpSP3
2012-10-12 13:11:33.151+0000: 7818: debug : virCgroupDetect:273 :
Detected mount/mapping 0:cpu at /cgroup/cpu in
2012-10-12 13:11:33.156+0000: 7818: debug : virCgroupDetect:273 :
Detected mount/mapping 1:cpuacct at /cgroup/cpuacct in
2012-10-12 13:11:33.156+0000: 7818: debug : virCgroupDetect:273 :
Detected mount/mapping 2:cpuset at /cgroup/cpuset in
2012-10-12 13:11:33.156+0000: 7818: debug : virCgroupDetect:273 :
Detected mount/ma pping 3:memory at /cgroup/memory in
2012-10-12 13:11:33.156+0000: 7818: debug : virCgroupDetect:273 :
Detected mount/mapping 4:devices at /cgroup/devices in
2012-10-12 13:11:33.156+0000: 7818: debug : virCgroupDetect:273 :
Detected mount/mapping 5:freezer at /cgroup/freezer in
2012-10-12 13:11:33.156+0000: 7818: debug : virCgroupDetect:273 :
Detected mount/mapping 6:blkio at /cgroup/blkio in
2012-10-12 13:11:33.156+0000: 7818: debug : virCgroupMakeGroup:535 :
Make group /libvirt/qemu/xpSP3
2012-10-12 13:11:33.156+0000: 7818: debug : virCgroupMakeGroup:560 :
Make controller /cgroup/cpu/libvirt/qemu/xpSP3/
2012-10-12 13:11:33.156+0000: 7818: debug : virCgroupMakeGroup:560 :
Make controller /cgroup/cpuacct/libvirt/qemu/xpSP3/
2012-10-12 13:11:33.156+0000: 7818: debug : virCgroupMakeGroup:560 :
Make controller /cgroup/cpuset/libvirt/qemu/xpSP3/
2012-10-12 13:11:33.156+0000: 7818: debug : virCgroupMakeGroup:560 :
Make controller /cgroup/memory/libvirt/ qemu/xpSP3/
2012-10-12 13:11:33.156+0000: 7818: debug : virCgroupMakeGroup:560 :
Make controller /cgroup/devices/libvirt/qemu/xpSP3/
2012-10-12 13:11:33.156+0000: 7818: debug : virCgroupMakeGroup:560 :
Make controller /cgroup/freezer/libvirt/qemu/xpSP3/
2012-10-12 13:11:33.156+0000: 7818: debug : virCgroupMakeGroup:560 :
Make controller /cgroup/blkio/libvirt/qemu/xpSP3/
2012-10-12 13:11:33.156+0000: 7818: debug : virCgroupSetValueStr:331
: Set value '/cgroup/cpu/libvirt/qemu/xpSP3/tasks' to '7818'
2012-10-12 13:11:33.156+0000: 7818: debug : virFileClose:72 : Closed
fd 3
2012-10-12 13:11:33.156+0000: 7818: debug : virCgroupSetValueStr:331
: Set value '/cgroup/cpuacct/libvirt/qemu/xpSP3/tasks' to '7818'
2012-10-12 13:11:33.156+0000: 7818: debug : virFileClose:72 : Closed
fd 3
2012-10-12 13:11:33.156+0000: 7818: debug : virCgroupSetValueStr:331
: Set value '/cgroup/cpuset/libvirt/qemu/xpSP3/tasks' to '7818'
2012-10-12 13:11:33.156+0000: 7818: debug : virFileClose:72 : Closed
fd 3
2012-10-12 13:11:33.156+0000: 7818: debug : virCgroupSetValueStr:331
: Set value '/cgroup/memory/libvirt/qemu/xpSP3/tasks' to '7818'
2012-10-12 13:11:33.156+0000: 7818: debug : virFileClose:72 : Closed
fd 3
2012-10-12 13:11:33.156+0000: 7818: debug : virCgroupSetValueStr:331
: Set value '/cgroup/devices/libvirt/qemu/xpSP3/tasks' to '7818'
2012-10-12 13:11:33.156+0000: 7818: debug : virFileClose:72 : Closed
fd 3
2012-10-12 13:11:33.156+0000: 7818: debug : virCgroupSetValueStr:331
: Set value '/cgroup/freezer/libvirt/qemu/xpSP3/tasks' to '7818'
2012-10-12 13:11:33.156+0000: 7818: debug : virFileClose:72 : Closed
fd 3
2012-10-12 13:11:33.156+0000: 7818: debug : virCgroupSetValueStr:331
: Set value '/cgroup/blkio/libvirt/qemu/xpSP3/tasks' to '7818'
2012-10-12 13:11:33.156+0000: 7818: debug : virFileClose:72 : Closed
fd 3
2012-10-12 13:11:33.156+0000: 7818: debug :
qemuProcessInitCpuAffinity:1848 : Setting CPU affinity
2 012-10-12 13:11:33.156+0000: 7818: debug :
qemuProcessInitCpuAffinity:1883 : Set CPU affinity with specified
cpuset
2012-10-12 13:11:33.156+0000: 7818: debug : qemuProcessHook:2626 :
Setting up security labelling
2012-10-12 13:11:33.157+0000: 7818: debug : virGetUserIDByName:2539 :
User record for user '0' does not exist
2012-10-12 13:11:33.157+0000: 7818: debug : virGetGroupIDByName:2621
: Group record for group '0' does not exist
2012-10-12 13:11:33.157+0000: 7818: debug :
virSecurityDACSetProcessLabel:861 : Dropping privileges of DEF to 0:0
2012-10-12 13:11:33.157+0000: 7818: debug : qemuProcessHook:2633 :
Hook complete ret=0
2012-10-12 13:11:33.157+0000: 7818: debug : virCommandHook:2060 :
Done hook 0
2012-10-12 13:11:33.157+0000: 7818: debug : virCommandHook:2074 :
Notifying parent for handshake start on 21
2012-10-12 13:11:33.157+0000: 7818: debug : virCommandHook:2098 :
Waiting on parent for handshake complete on 22
2012-10-12 13:11:33.157+0 000: 7818: debug : virFileClose:72 : Closed
fd 21
2012-10-12 13:11:33.157+0000: 7818: debug : virFileClose:72 : Closed
fd 22
2012-10-12 13:11:33.157+0000: 7818: debug : virCommandHook:2119 :
Hook is done 0
char device redirected to /dev/pts/4
qemu-kvm: -drive

file=rbd:cloud/testrbd:debug_rbd=20:debug_monc=20:debug_auth=20:log_to_stderr=2:id=admin:key=AQCp1GFQMMOrCxAAEb4jxgUF9BuSBkQIigFi/Q==:auth_supported=cephx;none:mon_host=192.168.10.4:6789,if=none,id=drive-virtio-disk0,format=raw,cache=writethrough,aio=native:
could not open disk image

rbd:cloud/testrbd:debug_rbd=20:debug_monc=20:debug_auth=20:log_to_stderr=2:id=admin:key=AQCp1GFQMMOrCxAAEb4jxgUF9BuSBkQIigFi/Q==:auth_supported=cephx;none:mon_host=192.168.10.4:6789:
No such file or directory
2012-10-12 13:11:33.557+0000: shutting down

----

At 2012-10-12 00:04:19,"Josh Durgi
  n" <josh.durgin@xxxxxxxxxxx> wrote:

On 10/11/2012 12:00 AM, yue wrote:

how should i do? i configurate guest-os.xml ,add rbd disk manually.
then virsh start xpSP3


That's the right way to do it.


-------rbd disk------------
<disk type='network' device='disk'>
<driver name='qemu' type='raw' cache='writethrough' io='native'/>
<auth username='cloud'>
<secret type='ceph' uuid='7a91dc24-b072-43c4-98fb-4b2415322b0f'/>
</auth>
<source protocol='rbd' name='cloud/testrbd'>
<host name='192.168.10.4' port='6789'/>
</source>
<target dev='vdb' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x06'
function='0x0'/>
</disk>
---error log---

[root@KVM-ip11 git]# virsh start xpSP3
error: Failed to start domain xpSP3
error: internal error process exited while connecting to monitor:
char device redirected to /dev/pts/4
qemu-kvm: -drive
file=rbd:cloud/testrbd:id=cloud:key=AQCGbGRQ+M+NGBAATtylZNiSxqCTQ4uaApd+9w==:auth_supported=cephx;none:mon_host=192.168.10.4:6789,if=none,id=drive-virtio-disk1,format=raw,cache=writethrough,aio=native:
could not open disk image
rbd:cloud/testrbd:id=cloud:key=AQCGbGRQ+M+NGBAATtylZNiSxqCTQ4uaApd+9w==:auth_supported=cephx;none:mon_host=192.168.10.4:6789:
No such file or directory
---xpSP3.log-----
2012-10-11 14:57:58.118+0000: starting up
LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin HOME=/root USER=root
LOGNAME=root QEMU_AUDIO_DRV=none /usr/libexec/qemu-kvm -name xpSP3 -S
-M rhel6.2.0 -enable-kvm -m 512 -smp 1,sockets=1,cores=1,threads=1
-uuid b45bd66a-6700-4905-c5f4-4c799413d7b7 -nodefconfig -nodefaults
-chardev
socket,id=charmonitor,path=/var/lib/libvirt/qemu/xpSP3.monitor,server,nowait
-mon chardev=charmonitor,id=monitor,mode=readline -rtc
base=localtime,driftfix=slew -device
piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive
file=/var/lib/libvirt/images/xpSP3.img,if=none,id=drive-ide0-0-0,format=raw,cache=none
-device
ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1
-drive
file=rbd:cloud/testrbd:id=cloud:key=AQCGbGRQ+M+NGBAATtylZNiSxqCTQ4uaApd+9w==:auth_supported=cephx;none:mon_host=192.168.10.4:6789,

  if=none,id=drive-virtio-disk1,format=raw -device

virtio-blk-pci,scsi=off,bus=pci.0,addr=0x6,drive=drive-virtio-disk1,id=virtio-disk1
-netdev tap,fd=19,id=hostnet0 -device e1000,netdev!

=hostnet0,id=net0,mac=52:54:00:2a:8c:48,bus=pci.0,addr=0x3 -chardev
pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0
-device usb-tablet,id=input0 -vnc 0.0.0.0:0 -vga std -device
intel-hda,id=sound0,bus=pci.0,addr=0x4 -device
hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device
virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5
Domain id=3 is tainted: high-privileges
char device redirected to /dev/pts/4
qemu-kvm: -drive
file=rbd:cloud/testrbd:id=cloud:key=AQCGbGRQ+M+NGBAATtylZNiSxqCTQ4uaApd+9w==:auth_supported=cephx;none:mon_host=192.168.10.4:6789,if=none,id=drive-virtio-disk1,format=raw:
could not open disk image
rbd:cloud/testrbd:id=cloud:key=AQCGbGRQ+M+NGBAATtylZNiSxqCTQ4uaApd+9w==:auth_supported=cephx;none:mon_host=192.168.10.4:6789:
No such file or directory
2012-10-11 14:57:58.548+0000: shutting down


It's unclear where the actual problem is - could you try again with
name='cloud/testrbd:debug_ms=1:debug_rbd=20:debug_monc=10:log_to_stderr=true'
and post the instance log (i.e. xpSP3.log)?

Josh







At 2012-10-11 14:48:43,"Josh Durgin" <josh.durgin@xxxxxxxxxxx>
wrote:

On 10/10/2012 10:52 PM, yue wrote:

hi, now i rebuild libvirtd, version 0.10.2. and define ceph
secret
,define ceph storage-pool. all fine up to now.
i operate guest-os through virt-manager-GUI . i add a
rbd-file(qemu-img create before) from ceph-rbd-pool, click
'finish',it
pop error "NoneType object has no attribute startswith", someone
say it
is python error.


python-virtinst (and thus virt-manager) don't support the rbd
storage
pool. They don't know how to configure rbd disks yet either.

Josh







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