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[libvirt-users] Starting a program inside VM through libvirt
by Jørgen Nordmoen 12 Jul '12

12 Jul '12

Hi again. I was just wondering if there are any support for running programs inside a VM through libvirt. From what I can see in the API the only solution I found was connecting to the VM with openConsole and running the program I want. This however seems a bit tricky through Python and I was just wondering if there are any simpler solutions. Best regards. Jørgen

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[libvirt-users] PCI-Passthrough suddenly stopped working
by Rouven Sacha 12 Jul '12

12 Jul '12

Hi everybody! On a Centos 5.8 with libvirt qemu-0.10.5-1.el5.2, libvirt-0.8.2-22.el5 and 2.6.18-308.11.1.el5 I have a Windows machine that used to have pci-passthrough for a device enabled and working. After an update (kernel, libvirt afaik) and a reboot, pci-passthrough stopped working. Intel IOMMU is enabled (can see that from the dmesg output). All i get on the console when i try to start the vm is the following: Fehler: internal error process exited while connecting to monitor: char device redirected to /dev/pts/3 Failed to assign device "14:00.2" : Invalid argument Failed to deassign device "14:00.2" : Invalid argument Failed to initialize assigned device host=14:00.2 SELinux ist disabled. Does anyone have any hint what could have possibly gone wrong? As an additional info: "virsh nodeddev-list" also doesn't work. I don't know if I mix that up, but i seem to remember that that used to work on that machine. root@kvm ~]# virsh nodedev-list --tree Fehler: Failed to count node devices Fehler: this function is not supported by the connection driver: virNodeNumOfDevices Any hints are greatly appreciated! Thanks & Cheers, Rouven -- Blinkenlichten Open Source Solutions Maass Sacha GbR | Weigandufer 45 | 12059 Berlin tel: +493013896247 | fax: +493013896249 | mob: +491744220127 Web: http://www.blinkenlichten.de/ G+: http://gplus.to/blinkenlichten Blinkenlichten Zarafa Hosted Tweets: http://twitter.com/zarafamail/

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[libvirt-users] compiling docs from git
by Arindam Choudhury 12 Jul '12

12 Jul '12

Hi, I am unable to compile documents obtained from the git source. I am getting this error: Brand 'libvirt' had no content to copy. at /usr/bin/publican line 763 Thanks

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[libvirt-users] storage volume's size change
by Shantanu Pavgi 11 Jul '12

11 Jul '12

I have a question regarding storage volumes. I have uploaded a sparsed raw disk file to a storage volume, where virtual/max. size of the raw disk file is larger than size of the initial libvirt volume. Following is an example of commands: # Create storage volume of capacity 9G $ virsh-sys vol-create-as --pool pool-01 --name saturn.img --capacity 9G # Display volume info $ virsh-sys vol-info saturn.img --pool pool-01 Name: saturn.img Type: file Capacity: 9.00 GB Allocation: 36.11 MB # Upload raw disk file to the volume $ virsh-sys vol-upload --vol saturn.img --file /lustre/scratch/shantanup/saturn-disk.img --pool pool-01 # qemu-img info on disk file which was uploaded $ qemu-img info /lustre/scratch/shantanup/saturn-disk.img file format: raw virtual size: 20G (21474836480 bytes) disk size: 5.7G # vol-info after uploading the raw disk image $ virsh-sys vol-info saturn.img --pool pool-01 Name: saturn.img Type: file Capacity: 20.00 GB Allocation: 20.00 GB The vol-info command indicates that volume size has changed after uploading the raw disk image to it. So has the volume size really changed to 20G or will the system experience any problem after actual disk size (currently 5.7G) hits 9G limit? I can't directly poke into the storage pool mount to run ls or qemu-img commands on underlying volumes, so I don't have that information. Any help? -- Thanks, Shantanu

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[libvirt-users] live migration
by hcyy 11 Jul '12

11 Jul '12

Hello, everybody. I use NFS to do live migration。After input virsh --connect=qemu:///system --quiet migrate --live vm12 qemu+tcp://pcmk-1/system (vm12 is vm name,/pcmk-1 is host name)it use almost 10s for preparation. During the 10s,the vm is still runing and can ping other vm. But if i input mkdir pcmk-6 in vm during the 10s,it say :mkdir: cannot create directory `pcmk-6': Read-only file system. Anybody can tell me this situation is due to my wrong configure or libvirt cannot mkdir during migration？thanks!

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[libvirt-users] segfault on snapshot-list, 0.9.13
by Andrey Korolyov 10 Jul '12

10 Jul '12

Hi, virsh crashes when doing snapshot-list: Program received signal SIGSEGV, Segmentation fault. 0x00007f4ba600dc51 in ?? () from /lib/x86_64-linux-gnu/libc.so.6 (gdb) bt #0 0x00007f4ba600dc51 in ?? () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x00007f4ba60905b7 in xdr_string () from /lib/x86_64-linux-gnu/libc.so.6 #2 0x00007f4ba8e92cfe in xdr_remote_nonnull_string (xdrs=<optimized out>, objp=<optimized out>) at /var/tmp/build/libvirt/libvirt-0.9.13/./src/remote/remote_protocol.c:31 #3 0x00007f4ba8e93111 in xdr_remote_nonnull_domain (xdrs=0x7fff39fc2db0, objp=0x7fff39fc3010) at /var/tmp/build/libvirt/libvirt-0.9.13/./src/remote/remote_protocol.c:58 #4 0x00007f4ba8e99691 in xdr_remote_domain_list_all_snapshots_args (xdrs=0x7fff39fc2db0, objp=0x7fff39fc3010) at /var/tmp/build/libvirt/libvirt-0.9.13/./src/remote/remote_protocol.c:4549 #5 0x00007f4ba8ea60f7 in virNetMessageEncodePayload (msg=0x1a306c0, filter=0x7f4ba8e99670 <xdr_remote_domain_list_all_snapshots_args>, data=0x7fff39fc3010) at /var/tmp/build/libvirt/libvirt-0.9.13/./src/rpc/virnetmessage.c:351 #6 0x00007f4ba8e9de3f in virNetClientProgramCall (prog=<optimized out>, client=0x1a30ab0, serial=7, proc=274, noutfds=<optimized out>, outfds=0x0, ninfds=0x0, infds=0x0, args_filter=0x7f4ba8e99670 <xdr_remote_domain_list_all_snapshots_args>, args=0x7fff39fc3010, ret_filter=0x7f4ba8e996e0 <xdr_remote_domain_list_all_snapshots_ret>, ret=0x7fff39fc2ff0) at /var/tmp/build/libvirt/libvirt-0.9.13/./src/rpc/virnetclientprogram.c:327 #7 0x00007f4ba8e7f550 in callWithFD (priv=0x1a30400, flags=<optimized out>, fd=<optimized out>, proc_nr=274, args_filter=<optimized out>, args=<optimized out>, ret_filter=0x7f4ba8e996e0 <xdr_remote_domain_list_all_snapshots_ret>, ret=0x7fff39fc2ff0 "", conn=<optimized out>) at /var/tmp/build/libvirt/libvirt-0.9.13/./src/remote/remote_driver.c:4799 #8 0x00007f4ba8e7f6a4 in call (priv=<optimized out>, flags=<optimized out>, proc_nr=<optimized out>, args_filter=<optimized out>, args=<optimized out>, ret_filter=<optimized out>, ret=0x7fff39fc2ff0 "", conn=<optimized out>) at /var/tmp/build/libvirt/libvirt-0.9.13/./src/remote/remote_driver.c:4820 #9 0x00007f4ba8e8edfd in remoteDomainListAllSnapshots (dom=0x1a300f0, snapshots=0x7fff39fc3218, flags=<optimized out>) at /var/tmp/build/libvirt/libvirt-0.9.13/./src/remote/remote_driver.c:4895 #10 0x00007f4ba8e6c36f in virDomainListAllSnapshots (domain=0x1a300f0, snaps=0x7fff39fc3218, flags=0) at /var/tmp/build/libvirt/libvirt-0.9.13/./src/libvirt.c:17262 #11 0x000000000042bca6 in vshSnapshotListCollect (tree=false, flags=0, from=0x0, dom=0x1a300f0, ctl=0x7fff39fc35e0) at /var/tmp/build/libvirt/libvirt-0.9.13/./tools/virsh.c:17198 #12 cmdSnapshotList (ctl=0x7fff39fc35e0, cmd=<optimized out>) at /var/tmp/build/libvirt/libvirt-0.9.13/./tools/virsh.c:17590 #13 0x000000000040ec92 in vshCommandRun (ctl=0x7fff39fc35e0, cmd=0x1a30f20) at /var/tmp/build/libvirt/libvirt-0.9.13/./tools/virsh.c:19461 #14 0x000000000040bdb0 in main (argc=<optimized out>, argv=<optimized out>) at /var/tmp/build/libvirt/libvirt-0.9.13/./tools/virsh.c:21094

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[libvirt-users] What is the procedure of libvirt internal when you run a domain.
by xuanmao_001 10 Jul '12

10 Jul '12

Hi, all. I want to know when I press run button. start a domain. What is the procedure of libvirt internal. I know it will call virDomainCreate(),then qemuDomainStart() -> qemuDomainStartWithFlags(). what is the next? xuanmao_001

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[libvirt-users] Adding a second lv as vm drive: how to set the pci part
by Mauricio Tavares 10 Jul '12

10 Jul '12

Let's say I have a vm, vm1, which has a lv as its hard drive: <disk type='file' device='disk'> <driver name='qemu' type='raw' cache='none' io='native'/> <source file='/dev/mapper/kvmtest_vm1_rootvg'/> <target dev='vda' bus='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </disk> I could add pickles as a second drive as follows: <disk type='file' device='disk'> <driver name='qemu' type='raw' cache='none' io='native'/> <source file='/dev/mapper/kvmtest_pickles'/> <target dev='vdb' bus='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> </disk> but I am trying to understand the pci address entry. Must drive be on a different slot?

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[libvirt-users] Issue with getCPUStats and getMemoryStats
by Ananth 10 Jul '12

10 Jul '12

Hi, I am facing issue with the calls getCPUStats and getMemoryStats. Please find the error below. AttributeError: 'module' object has no attribute 'VIR_NODE_CPU_STATS_ALL_CPUS' >>> print con.getCPUStats(2, None, 0, 0) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib64/python2.6/site-packages/libvirt.py", line 2173, in getCPUStats ret = libvirtmod.virNodeGetCPUStats(self._o, cpuNum, params, nparams, flags) *AttributeError: 'module' object has no attribute 'virNodeGetCPUStats'* >>> print con.getMemoryStats(2, None, 0, 0) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib64/python2.6/site-packages/libvirt.py", line 2245, in getMemoryStats ret = libvirtmod.virNodeGetMemoryStats(self._o, cellNum, params, nparams, flags) *AttributeError: 'module' object has no attribute 'virNodeGetMemoryStats'* Kind let me know if this is a known issue. I came to know that this issue was fixed in 0.9.8 version of libvirt. I am executing these calls on libvirt-0.9.8 compiled (--with-netcf) on centos 6.2. Please let me know if any other option needs to be specified while compiling libvirt in order to get this working. -- Regards Ananth

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Re: [libvirt-users] virsh iface-list () - function is not supported
by Osier Yang 10 Jul '12

10 Jul '12

On 2012年07月03日 00:42, Ananth wrote: > Thank you. Can you give pointers on how to compile libvirt code? and > documentation available for the same? Sorry for the late response, I'm in vacation. Yes, there is documentation. http://libvirt.org/compiling.html Regards, Osier

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