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[libvirt-users] starting lxcs from within a vm using libvirt
by Robb Walker 15 Jul '14

15 Jul '14

my goal for testing/simulations is to be able to run a vm on my desktop and within that vm run linux containers currently I can start an ubuntu trusty vm using libvirt as my broker to qemu or qemu-system-x86_64 directly and start a saucy-based lxc using lxc-tools. I invoke lxc-start -n name -f configfile and within a few seconds I'm logged into my saucy based lxc. I can't start the lxc thru libvirt i.e. virsh -c lxc:/// start domain Again, if I try to use libvirt to "install" and start the lxc from within the vm, no joy. Results below: >>> root@vullbvrt69:~# virt-install --connect lxc:/// -n vulslxc01 -r 512 --filesystem /qemu_lxc/ss_140521/,/ --serial pty --serial pty Starting install... Creating domain... | 0 B 00:00 error: failed to get domain '22542' error: Domain not found: No domain with matching name '22542' Domain creation completed. You can restart your domain by running: root@vullbvrt69:~# virsh -c lxc:/// list --all Id Name State ---------------------------------------------------- - vulslxc01 shut off root@vullbvrt69:~# virsh -c lxc:/// start vulslxc01 Domain vulslxc01 started root@vullbvrt69:~# virsh -c lxc:/// console vulslxc01 --devname serial1 error: The domain is not running root@vullbvrt69:~# virsh -c lxc:/// list --all Id Name State ---------------------------------------------------- - vulslxc01 shut off >>> My physical desktop is running precise 12.04.4 ----qemu-kvm 1.0+noroms-0ubuntu14.15 ----libvirt-bin 0.9.8-2ubuntu17.19 ----lxc 0.7.5-3ubuntu69 This physical machine launches the trusty vm from which in turn I'm trying to run lxcs via libvirt Trusty vm ----libvirt-bin 1.2.2-0ubuntu13.1.1 ----lxc 1.0.4-0ubuntu0.1 The saucy lxc was not created using lxc templates just a normal minbase debootstrap. I have run virt-install with -d. Nothing obvious jumps out except the above Domain not found virsh -c lxc:/// -d4 -l debug.out start domain_name dumps nothing into debug.out thx in advance for any and all help and apolgies in advance if I've dropped critical info to help sort this out This e-mail and any attachments may contain information that is confidential and proprietary and otherwise protected from disclosure. If you are not the intended recipient of this e-mail, do not read, duplicate or redistribute it by any means. Please immediately delete it and any attachments and notify the sender that you have received it in error. Unintended recipients are prohibited from taking action on the basis of information in this e-mail or any attachments. The DRW Companies make no representations that this e-mail or any attachments are free of computer viruses or other defects.

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Re: [libvirt-users] LVM Volume Creation
by Ravi Samji 15 Jul '14

15 Jul '14

Hi All, I'm having issue with creating LVM Volume via libvirt. We are running libvirtd 1.2 with KVM. We are creating Volume Group (VG01) outside of libvirt and defining a storage pool for it. Here is the StoragePool XML for the Volume Group created outside libvirt. <pool type="logical"> <name>VG01</name> <target> <path>/dev/VG01</path> </target> </pool> We are creating Logical Volume (ub_test01.img) through libvirt in the Volume Group (VG01) Here is the XML to create Storage Volume in LVM Storage Pool VG01. <volume type="block"> <name>ub_test01.img</name> <allocation>0</allocation> <capacity unit="M">1</capacity> <target> <format type="lvm2" /> </target> </volume> When I create the Logical Volume from libvirt using above XML and run lvs command to list logical volumes, this is what I see. LV VG Attr LSize Origin Snap% Move Log Copy% Convert --------------- ------- ------- ------- ----------------------- ------- ------- ------- ------- ------- foo VG01 -wi-a- 1.00g ub_test01.img VG01 swi-a- 4.00m [ub_test01.img_vorigin] 0.20 root ops-02 -wi-ao 227.08g swap_1 ops-02 -wi-ao 5.75g As you see, ub_test01.img shows that it has an Origin indicating that it was created as a snapshot, but, that Origin doesn't exist and wasn't specified. I'd appreciate if you anyone can help me understand what is going on and/or describe how to make libvirt create logical volumes not as a snapshot. I'm happy to enable debugging to see what command libvirt is running to create the volume if someone case describe how to enable debugging. Regards, Ravi Message sent via Atmail Open - http://atmail.org/

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[libvirt-users] LVM Volume Creation
by Ravi Samji 14 Jul '14

14 Jul '14

Hi All, I'm having issue with creating LVM volume via libvirt. XML of LVM StoragePool is: VG01 /dev/VG01 (existing vg) XML of create volume in lvm pool is: ub_test01.img 0 1 When I create the volume with above XML defn, lvs command to list logical volume shows a value in the origin column indicating it was created as snapshot.. the strange thing is that the origin volume does not exist..! something strange going on. You can see the lvs output here See http://pastebin.com/prk6VqwD [1] I'd appreciate if you anyone can help me understand what is going on and/or describe how to make libvirt create logical volumes not as a snapshot. We are running libvirtd 1.2 with KVM. Regards, Ravi ------------------------- Message sent via Atmail Open - http://atmail.org/ Links: ------ [1] http://pastebin.com/prk6VqwD

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[libvirt-users] Changing the default qemu path in libvirt
by satheesh 14 Jul '14

14 Jul '14

Hi All, I would like to change the default qemu path in libvirt xml and the changed path has to be used while installing VMs using virt-install. There was a similar question rasied some years back, I could not find the answer to the same. http://www.redhat.com/archives/libvir-list/2011-December/msg01100.html Is that possible right now?, If we have the support already, please point to the same. Thanks in advance. Regards, -Satheesh.

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[libvirt-users] configuring a lxc guest to run 32bits from a 64bits host under libvirt-lxc
by Thierry Parmentelat 14 Jul '14

14 Jul '14

Hi there I have a couple of newbie questions concerning running a 32bits guest in a 64bits host using libvirt - lxc; I’m running libvirt-1.2.5 on fedora18 and fedora20 (a) is this supported at all, and (b) if so how do I configure this for a given guest ? guessing from the mere existence of http://www.redhat.com/archives/libvir-list/2011-February/msg01040.html I would think the answer to (a) is yes; anybody cares to confirm ? As far as (b), I would expect some flag could be set in the XML description of my guest so that libvirt can perform the proper syscall to personality() at the right point in the process hierarchy.. However I have not been able to spot this in the documentation so far, but OTOH the page on the XML configuration here http://libvirt.org/format.html appears to be empty so this might be a temporary hiccup ? in any case, any hint or insight on this matter would be much appreciated — Thierry

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[libvirt-users] libvirt build issue - make check fails , file name long
by Raj Ravi 11 Jul '14

11 Jul '14

Hi, I was trying to build libvirt-0.10.2-29. Now, it builds fine in simple directory setting: like /home/itsme/test/libvirt/ But, if the directory setting is long: like /home/public/test/abc-v1/liibvrt-v1-v2/ = > it fails. Reason for failure is :qemumonitorjsontest I tried running the specific test case like : VIR_TEST_VERBOSE=1 ./qemumonitorjsontest ======================== 1) GetStatus ... libvir: XML-RPC error : Path /home/public/abc_v1_v2/libvirt_0.10.2_29/BUILD/libvirt-0.10.2/tests/qemumonitorjsontest.sock too long for unix socket: File name too long FAILED 2) GetVersion ... libvir: XML-RPC error : Path /home/public/abc_v1_v2/libvirt_0.10.2_29/BUILD/libvirt-0.10.2/tests/qemumonitorjsontest.sock too long for unix socket: File name too long FAILED 3) GetMachines ... libvir: XML-RPC error : Path /home/public/abc_v1_v2/libvirt_0.10.2_29/BUILD/libvirt-0.10.2/tests/qemumonitorjsontest.sock too long for unix socket: File name too long FAILED 4) GetCPUDefinitions ... libvir: XML-RPC error : Path /home/public/abc_v1_v2/libvirt_0.10.2_29/BUILD/libvirt-0.10.2/tests/qemumonitorjsontest.sock too long for unix socket: File name too long FAILED 5) GetCommands ... libvir: XML-RPC error : Path /home/public/abc_v1_v2/libvirt_0.10.2_29/BUILD/libvirt-0.10.2/tests/qemumonitorjsontest.sock too long for unix socket: File name too long FAILED ======================== Is this a known issue ? Is there any specific patch which addresses this issue ? Please let me know. Thanks, Raj

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Re: [libvirt-users] LibVirt + QEMU & no-shutdown
by Michael D 11 Jul '14

11 Jul '14

Scratch that, seems to depend on guest or perhaps even boot device. Finnix live CD halts correctly. Ubuntu 14.04 does not. On 11 July 2014 15:27, Michael D <me(a)md-5.net> wrote: > I am currently running LibVirt with Qemu on Debian Wheezy: > > Versions: > > - libvirtd (libvirt) 1.2.4 > - qemu-x86_64 version 2.0.0 (Debian 2.0.0+dfsg-4~bpo70+1), Copyright > (c) 2003-2008 Fabrice Bellard > > It's all working perfectly, including ACPI: virsh shutdown guest. However > when I issue "halt" from the guest, the guest stops but libvirt thinks it > is still running: (virsh list outputs state: running). virsh dominfo does > the same thing: State: running > > I believe this is due to the -no-shutdown flag passed to qemu, making it > stop the CPUs rather than halt entirely. Is this however a bug that the > status is not updated correctly? I've taken a glance at the source and it > should SIGTERM qemu when it sees the stop, but evidently it isn't. > > > Thanks > > Michael >

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[libvirt-users] LibVirt + QEMU & no-shutdown
by Michael D 11 Jul '14

11 Jul '14

I am currently running LibVirt with Qemu on Debian Wheezy: Versions: - libvirtd (libvirt) 1.2.4 - qemu-x86_64 version 2.0.0 (Debian 2.0.0+dfsg-4~bpo70+1), Copyright (c) 2003-2008 Fabrice Bellard It's all working perfectly, including ACPI: virsh shutdown guest. However when I issue "halt" from the guest, the guest stops but libvirt thinks it is still running: (virsh list outputs state: running). virsh dominfo does the same thing: State: running I believe this is due to the -no-shutdown flag passed to qemu, making it stop the CPUs rather than halt entirely. Is this however a bug that the status is not updated correctly? I've taken a glance at the source and it should SIGTERM qemu when it sees the stop, but evidently it isn't. Thanks Michael

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[libvirt-users] How to config qga to support dompmsuspend
by Hong-Hua.Yin＠freescale.com 10 Jul '14

10 Jul '14

Hi, I tried to run domsuspend command on my PowerPC board but failed. # virsh dompmsuspend sdk --target mem error: Domain sdk could not be suspended error: argument unsupported: QEMU guest agent is not configured It seemed that support suspend-to-mem only from capabilities. # virsh capabilities <capabilities> <host> <uuid>52498f7c-d584-45d8-8a15-345b14fa0d10</uuid> <cpu> <arch>ppc</arch> <topology sockets='1' cores='2' threads='1'/> <pages unit='KiB' size='4'/> <pages unit='KiB' size='1024'/> <pages unit='KiB' size='4096'/> <pages unit='KiB' size='16384'/> <pages unit='KiB' size='65536'/> <pages unit='KiB' size='262144'/> <pages unit='KiB' size='1048576'/> </cpu> <power_management> <suspend_mem/> </power_management> <migration_features> <live/> <uri_transports> <uri_transport>tcp</uri_transport> </uri_transports> </migration_features> <topology> <cells num='1'> <cell id='0'> <memory unit='KiB'>2066304</memory> <cpus num='2'> <cpu id='0' socket_id='0' core_id='0' siblings='0'/> <cpu id='1' socket_id='0' core_id='1' siblings='1'/> </cpus> </cell> </cells> </topology> <secmodel> <model>none</model> <doi>0</doi> </secmodel> <secmodel> <model>dac</model> <doi>0</doi> <baselabel type='kvm'>+0:+0</baselabel> <baselabel type='qemu'>+0:+0</baselabel> </secmodel> </host> <guest> <os_type>hvm</os_type> <arch name='ppc'> <wordsize>32</wordsize> <emulator>/usr/bin/qemu-system-ppc</emulator> <machine maxCpus='1'>g3beige</machine> <machine maxCpus='32'>ppce500</machine> <machine maxCpus='1'>mac99</machine> <machine maxCpus='15'>mpc8544ds</machine> <machine maxCpus='1'>taihu</machine> <machine maxCpus='1'>ref405ep</machine> <machine maxCpus='1'>bamboo</machine> <machine maxCpus='1'>prep</machine> <machine maxCpus='1'>virtex-ml507</machine> <domain type='qemu'> </domain> <domain type='kvm'> <emulator>/usr/bin/qemu-system-ppc</emulator> </domain> </arch> <features> <deviceboot/> <disksnapshot default='on' toggle='no'/> </features> </guest> </capabilities> I read from some document about qemu guest agent but still don't know how to config it as daemon in guest domain. Best Regards, Olivia

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[libvirt-users] snapshot-create error
by Hong-Hua.Yin＠freescale.com 10 Jul '14

10 Jul '14

Hi, What's the difference between QEMU snapshot and libvirt snapshot? # qemu-img create -f qcow2 disk.img 512 Formatting 'disk.img', fmt=qcow2 size=512 encryption=off cluster_size=65536 lazy_refcounts=off # qemu-img info disk.img image: disk.img file format: qcow2 virtual size: 512 (512 bytes) disk size: 136K cluster_size: 65536 Format specific information: compat: 1.1 lazy refcounts: false # /usr/bin/qemu-system-ppc -M ppce500 -enable-kvm -m 512 -nographic -kernel /dev/shm/uImage -initrd /dev/shm/ramdisk -append "root=/dev/ram rw console=ttyS0,115200" -serial tcp::4444,server,telnet -snapshot -hda disk.img QEMU 1.7.0 monitor - type 'help' for more information (qemu) QEMU waiting for connection on: telnet:0.0.0.0:4444,server (qemu) savevm (qemu) info snapshot unknown command: 'info snapshot' (qemu) info snapshots ID TAG VM SIZE DATE VM CLOCK 1 vm-20140709035738 173M 2014-07-09 03:57:38 00:00:07.401 Is there any special qemu command options or kernel configurations to allow libvirt create snapshot? I got the error as below: virsh # snapshot-create snap error: unsupported configuration: internal snapshots and checkpoints require all disks to be selected for snapshot The domain XML file is converted as below steps. # cat >snap.args <<EOF /usr/bin/qemu-system-ppc -name snap -M ppce500 -enable-kvm -m 512 -nographic -kernel /dev/shm/uImage -initrd /dev/shm/ramdisk -append "root=/dev/ram rw console=ttyS0,115200" -serial pty # virsh domxml-from-native qemu-argv snap.args >snap.xml # cat sdk.xml <domain type='kvm'> <name>sdk</name> <memory unit='KiB'>524288</memory> <currentMemory unit='KiB'>524288</currentMemory> <vcpu placement='static'>1</vcpu> <os> <type arch='ppc' machine='ppce500'>hvm</type> <kernel>/dev/shm/uImage</kernel> <initrd>/dev/shm/ramdisk</initrd> <cmdline>root=/dev/ram rw console=ttyS0,115200</cmdline> <boot dev='hd'/> </os> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <devices> <emulator>/usr/bin/qemu-system-ppc</emulator> <controller type='usb' index='0'/> <controller type='pci' index='0' model='pci-root'/> <serial type='pty'> <target port='0'/> </serial> <console type='pty'> <target type='serial' port='0'/> </console> <memballoon model='virtio'> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </memballoon> </devices> </domain> Best Regards, Olivia

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