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[libvirt-users] virDomainMemoryStats available tags
by Jean-Pierre Ribeauville 05 Feb '16

05 Feb '16

Hi, By using libvirt-1.2.8-16.el7_1.3.x86_64 , it looks like there are 3 virDomainMemoryStats tags available : VIR_DOMAIN_MEMORY_STAT_SWAP_IN VIR_DOMAIN_MEMORY_STAT_ACTUAL_BALLOON VIR_DOMAIN_MEMORY_STAT_RSS Is there a plan to add the other ones ? Meanwhile , do you know which metrics ovirt uses to display memory column value in the manager GUI ? Thx. J.P. Ribeauville P: +33.(0).1.47.17.20.49 . Puteaux 3 Etage 5 Bureau 4 jpribeauville(a)axway.com<mailto:jpribeauville@axway.com> http://www.axway.com<http://www.axway.com/> P Pensez à l'environnement avant d'imprimer.

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Re: [libvirt-users] [netcf-devel] Re: Error when creating bridge with virt-manager
by Laine Stump 04 Feb '16

04 Feb '16

On 02/04/2016 02:47 PM, Niccolò Belli wrote: > Thanks, selecting "Specify shared device name" worked flawlessly! > One more question: often I work with virtual machines with public ip > addresses and routed networking (not bridges!), how can I achieve it > with Arch and virt-manager? If you want to create a completely separate subnet contained within the host, and have all traffic to/from the outside routed via the host's IP stack, define a libvirt network, setup the IP subnet you want for the network, then in the final screen select "Forwarding to physical network", Destination: "Any physical device", Mode: "Routed". Once you've started this network, it will appear in the list of possible connections for a guest's network interfaces. Note that you will need to teach the rest of the network to forward packets for this new subnet to the host's physical ethernet IP (but if you're specifically asking for a routed network, then you likely already know this (either that or I've misunderstood your question) :-) You can see more info about the possible types of networks here: http://www.libvirt.org/formatnetwork.html I've set Reply-To: in this message to libvirt-users(a)redhat.com. It really is a more appropriate place for these questions, as the netcf mailing list deals specifically with the netcf library, which isn't involved in any of the things we're discussing here.

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[libvirt-users] libvirt.so is not safe to use from setuid programs
by Jean-Pierre Ribeauville 04 Feb '16

04 Feb '16

Hi, When trying to connect the HyperVisor from a binary having setuid bit set , then I got following error: Unable to perform virConnectOpenReadOnly function error(internal error: libvirt.so is not safe to use from setuid programs) My test software config is the following : -rwsr-xr-x. 1 root root 3374956 Feb 4 13:45 test As this test software needs S bit to be able to access O.S. metrics counters , how may I use it to retrieve KVM metrics counters ? Thx for help. J.P. Ribeauville P: +33.(0).1.47.17.20.49 . Puteaux 3 Etage 5 Bureau 4 jpribeauville(a)axway.com<mailto:jpribeauville@axway.com> http://www.axway.com<http://www.axway.com/> P Pensez à l'environnement avant d'imprimer.

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[libvirt-users] Both virsh console logging and pty usage
by Carlos Godoy 03 Feb '16

03 Feb '16

Hi, I am trying to set my VMs for redirecting their consoles to a file but its important to keep the virsh console access to solve any problem I can find while they are running. I tried several settings through libvirt (serial and console tags) but I can not get the key. Any suggestion? Any help? Many thanks in advance. Carlos G.

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[libvirt-users] virsh, virt-filesystems, guestmount, virt-install not working well with ceph rbd yet?
by Jelle de Jong 02 Feb '16

02 Feb '16

Hello everybody, This is a cross post to libvirt-users, libguestfs and ceph-users. I came back from FOSDEM 2016 and this was my 7th year or so and seen the awesome development around visualization going on and want to thank everybody for there contributions. I seen presentations from oVirt, OpenStack and quite a few great Redhat people, just like the last previous years. I personally been supporting Linux-HA (pacemaker) DRBD/iSCSI/KVM platform for years now and last year I started supporting Ceph RBD clusters with KVM hosts. But I keep hitting some “pains” and I been wondering why they have not been solved and how I can best request help around this? Tools that don't seem to fully work with Ceph RBD yet: - virsh snapshot-create --quiesce --disk-only $quest - virt-filesystems ${array_volume[@]} - guestmount --ro ${array_volume[@]} -m $mount /mnt/$name-$disk - virt-install also doesn't have Ceph RBD and I currently use virsh edit to add the RBD storage disks. My request is to get these tools working as well with Ceph RBD and maybe not only integrate oVirt or OpenStack alike systems. I use several types of back-up strategies depending on the size on the data storage use. I am not sure how oVirt and alike create secure encrypted incremental off-site back-ups of large data sets but I use(d) combinations of rdiff-backup, duplicity and full guest dumps with dd, rbd export, xz. Are these issues known and important enough, roadmap, bug reports? Should I start working for Redhat as I don't have the resources myself, but I can help with some money towards a crowed fund or bounty. Maybe my software is outdated? virsh 1.2.9 ceph version 0.80.10 libguestfs-tools 1:1.28.1-1 3.16.7-ckt20-1+deb8u2 My current workarounds for full storage exports: virsh domfsfreeze $quest sleep 2 virsh domblklist $quest rbd snap create --snap snapshot $blkdevice virsh domfsthaw $quest rbd export $blkdevice@snapshot - | xz -1 | ssh -p 222 $user@$server "dd of=/$location/$blkdevice$snapshot-$daystamp.dd.disk.gz" rbd snap rm $blkdevice@snapshot Kind regards, Jelle de Jong irc: #tuxcrafter

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[libvirt-users] Advice on virtio, or any virtualization solution for hdparm
by Peter Teoh 01 Feb '16

01 Feb '16

At the present moment, my guest is running inside qemu and host is kvm intel, running Ubuntu 14.04, kernel is 4.3.0 stable. From within the guest, when I run "hdparm -i /dev/sdb" on the guest, I get: HDIO_GET_IDENTITY failed: Invalid argument as the error,but on the host, I will get the full harddisk/SSD info. Can I know how to resolve this so that the output is the same for both host and guest? My strace of hdparm from within the guest (just "-e ioctl" is traced): ioctl(3, HDIO_GET_MULTCOUNT, 0x618ef0) = -1 EINVAL (Invalid argument) ioctl(3, SG_IO, {'S', SG_DXFER_FROM_DEV, cmd[16]=[85, 08, 0e, 00, 00, 00, 01, 00, 00, 00, 00, 00, 00, 40, ec, 00], mx_sb_len=32, iovec_count=0, dxfer_len=512, timeout=15000, flags=0, data[512]=["@\0\377?7\310\20\0\0\0\0\0?\0\0\0\0\0\0\0HPAD0409105B"...], status=00, masked_status=00, sb[0]=[], host_status=0, driver_status=0, resid=0, duration=184, info=0}) = 0 ioctl(3, HDIO_GET_IDENTITY, 0x7fffda088500) = -1 EINVAL (Invalid argument) HDIO_GET_IDENTITY failed: Invalid argument +++ exited with 22 +++ And at the host level: ioctl(1, SNDCTL_TMR_TIMEBASE or SNDRV_TIMER_IOCTL_NEXT_DEVICE or TCGETS, 0x7ffd4b096d90) = -1 ENOTTY (Inappropriate ioctl for device) ioctl(3, HDIO_GET_MULTCOUNT, 0x618ef0) = -1 ENOTTY (Inappropriate ioctl for device) ioctl(3, SG_IO, {'S', SG_DXFER_FROM_DEV, cmd[16]=[85, 08, 0e, 00, 00, 00, 01, 00, 00, 00, 00, 00, 00, 40, ec, 00], mx_sb_len=32, iovec_count=0, dxfer_len=512, timeout=15000, flags=0, data[512]=["@\0\377?7\310\20\0\0\0\0\0?\0\0\0\0\0\0\0HPAD0409105B"...], status=00, masked_status=00, sb[0]=[], host_status=0, driver_status=0, resid=0, duration=184, info=0}) = 0 ioctl(3, HDIO_GET_IDENTITY, 0x7ffd4b0976e0) = 0 +++ exited with 0 +++ And my qemu command line: sudo ./x86_64-softmmu/qemu-system-x86_64 -m 1024 -boot c -enable-kvm -net nic -net user \ -device virtio-scsi-pci \ -drive if=none,file=/dev/sdb,id=sdb,cache=none,format=raw \ -device scsi-block,drive=sdb \ -hda /home/user/ubuntu1404_x86_64/ubuntu1404_x86_64.img where qemu-system_x86_64 is freshly compiled from latest qemu-devel git tree. I would the SSD (internal SATA) at /dev/sdb to be pass directly into qemu. Please kindly recommend the best solution: distro (CentOS??), kernel version, qemu command like, and setup procedure for libvirtd? or virtio-scsi?

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[libvirt-users] generate interface MAC addresses in a particular order
by Andrei Perietanu 01 Feb '16

01 Feb '16

Hi all, I am using libvirt to manage VM on my system; after creating a VM (default no NICs are present in the configuration) you can add any number of interfaces to it (as long as they exist on the host). To do that, I edit the configuration xlm: vmXml = self.domain.XMLDesc() root = ET.fromstring(vmXml) devices = root.find('./devices') intf = ET.SubElement(devices,'interface') intf.set('type', 'bridge') src = ET.SubElement(intf,'source') src.set('bridge', bIntf) model = ET.SubElement(intf,'model') model.set('type', 'e1000') xml = ET.tostring(root) self.conn.defineXML(xml) Now the problem I have is that the MAC addresses are auto-generated and because of this there is no way to predict which interface number the newly added interface will map to, on the VM. Ideally, the first added interface is mapped to eth0/0, the second one eth0/1...etc. Since the mappings depend on the MAC addresses I figured that is the part I need to have control over. Any ideas? Thanks, Andrei -- The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. If you receive this in error please contact the sender and delete the material from any computer immediately. It is the policy of Klas Limited to disavow the sending of offensive material and should you consider that the material contained in the message is offensive you should contact the sender immediately and also your I.T. Manager. Klas Telecom Inc., a Virginia Corporation with offices at 1101 30th St. NW, Washington, DC 20007. Klas Limited (Company Number 163303) trading as Klas Telecom, an Irish Limited Liability Company, with its registered office at Fourth Floor, One Kilmainham Square, Inchicore Road, Kilmainham, Dublin 8, Ireland.

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[libvirt-users] storage pool and volume usage question
by Paul Carlton 31 Jan '16

31 Jan '16

Hi I'm creating a storage volume in a storage pool (directory type). I'd like to create a volume that creates a file in a sub directory under the directory that the pool points to but am not able to work out how, maybe it is not possible? My pool was created using following xml... <pool type='dir'> <name>nova-local-pool</name> <target> <path>/home/pcarlton/openstack/stuff/instances</path> <permissions> <mode>0755</mode> <owner>1000</owner> <group>130</group> </permissions> </target> </pool> The volume was created using this xml... stgvol_xml = """ <volume> <name>4291f96a-759a-4b8a-bfe2-7a8ccb118b75-disk</name> <allocation>0</allocation> <capacity unit="G">1</capacity> <target> <format type='qcow2'/> <permissions> <owner>1000</owner> <group>130</group> <mode>0644</mode> <label>image_overlay</label> </permissions> </target> <backingStore> <path>/home/pcarlton/openstack/stuff/nova/instances/_base/07f224f72581f8e029e08ff96827d581b2321a7b</path> <format type='raw'/> <permissions> <owner>1000</owner> <group>130</group> <mode>0644</mode> <label>image_base</label> </permissions> </backingStore> </volume>""" All works ok but I'd like the create the 'disk' file in /home/pcarlton/openstack/stuff/nova/instances/4291f96a-759a-4b8a-bfe2-7a8ccb118b75 Thanks -- Paul Carlton Software Engineer Cloud Services Hewlett Packard Enterprise BUK03:T242 Longdown Avenue Stoke Gifford Bristol BS34 8QZ Mobile: +44 (0)7768 994283 Office: +44 (0)117 316 2189 Email: mailto:paul.carlton2@hpe.com irc: paul-carlton2 Hewlett-Packard Enterprise Limited registered Office: Cain Road, Bracknell, Berks RG12 1HN Registered No: 690597 England. The contents of this message and any attachments to it are confidential and may be legally privileged. If you have received this message in error, you should delete it from your system immediately and advise the sender. To any recipient of this message within HP, unless otherwise stated you should consider this message and attachments as "HP CONFIDENTIAL".

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[libvirt-users] virt-viewer and virt-manager problem
by Pascal Legrand 29 Jan '16

29 Jan '16

Hello, here is my problem : i migrated an old debian server, with kvm host and guests vm, on a new one (wheezy to jessie). Everything worked fine on this old server. On the new server, i created a storage pool, copy the qcow2 guests files (from the old server) inside this storage pool, copy the xml guests files (from the old server) to /etc/libvirt/qemu , then virsh define guests and virsh start guests. Every guests works fine. My problem is about virt-viewer and virt-manager when i connect from my station to my kvm host from ssh (ssh -X 192.168.151.248). I cant use virt-manager or virt-user virt-manager display all the guests but i cant display the guest itself or the guest informations virt-viewer open a blanck window when i do vncviewer 192.168.151.248:5906 it works fine then i think the problem come from virt-viewer and virt-manager, but i cant see where is the problem. Does someone could help to solve this problem. Thanks -- Pascal

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[libvirt-users] Zombie processes being created when console buffer is full
by Peter Steele 29 Jan '16

29 Jan '16

We have been researching stuck zombie processes in our libvirt lxc containers. What we found was: 1) Each zombie’s parent was pid 1. init which symlinks to systemd. 2) In some cases, the zombies were launched by systemd, in others the zombie was inherited. 3) While the child is in the zombie state, the parent process (systemd) /proc/1/status shows no pending signals. 4) Attaching gdb to systemd, there was 1 thread and it was waiting in write() and the file being written was /dev/console. This write() to the console never returns. We operated under the assumption that systemd's SIGCHLD handler sets a bit and a foreground thread (the only thread) would see that child processes needed reaping. While the single thread is stuck in write(), the reaping never takes place. So why is write() blocking? The answer seems to be that there is nothing draining the console and eventually it blocks write() when its buffers become full. When we attached to the container's console, the buffer is cleared allowing systemd’s write() to return. The zombies are then reaped and everything goes back to normal. Our “solution” was more of a workaround. systemd was altered to log errors/warnings/etc to /dev/null instead of /dev/console. This prevented the problem, only in that the console buffer was unlikely to get filled up since systemd generally is the only then that writes to it. This is definitely a hack though. This may be a bug in the libvirt container library (you can't expect something to periodically connect to a container's console to empty it out). We suspect there may also be a configuration issue in our containers with regards to the console. Has anyone else observed this problem? Peter

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