- Users - libvirt List Archives

[libvirt-users] vol-info showing old disk size
by Zero Uno 23 Sep '14

23 Sep '14

Hi, I just resized the disk image of a virtual machine by following the recommended virt-resize procedure. The enlarged disk is working fine, and the size is correctly detected and used in the virtual machine. But "virsh vol-info /path/to/imagefile" still shows the old size and allocation. Is there a way to "fix" this, i.e. making virsh aware of the new size? Thanks. Marco

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[libvirt-users] unattended cloning
by Adam King 23 Sep '14

23 Sep '14

Morning, I have a KVM guest running Win 2012 with MS SQL 2012. In order to provide a quick method of restoring the service should the live server die, we've decided to clone it to a preserved state. Ideally, this clone should also be kept up to date and cloning should be done on a regular basis. Is there any reason not to do unattended cloning? As in, when I leave on a Friday afternoon, start a script to clone the guest and auto start the live guest? Thanks Adam King IT Systems Administrator

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[libvirt-users] savevm and qemu 2.1.1
by Thomas Stein 22 Sep '14

22 Sep '14

hello. I have an issue with libvirt-1.2.6 and qemu-2.1.1. As soon as i do: "savevm $domain" the domain ist gone. Console says "unable to connect to monitor". Libvirt.log says: qemu-system-x86_64: /var/tmp/portage/app- emulation/qemu-2.1.1/work/qemu-2.1.1/hw/net/virtio-net.c:1348: virtio_net_save: Assertion `!n->vhost_started' fail ed. Googling for this error leads to a barely related qemu-dev thread. Has someone else experiencing this behaviour? Uh. Almost forgot to mention. Going back to qemu-2.1.0 solves the issue. best regards t.

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[libvirt-users] 1.2.7 and 1.2.8 fail to start container: libvirt_lxc[4904]: segfault at 0 ip ...error 4 in libc-2.17.so[
by mxs kolo 18 Sep '14

18 Sep '14

HI all Centos 7, 3.10.0-123.6.3.el7.x86_64 libvirt 1.27, libvirt 1.2.8 builded from source with ./configure --prefix=/usr make && make install LXC with direct network failed to start: Sep 16 19:19:38 node01 kernel: device br502 entered promiscuous mode Sep 16 19:19:39 node01 kernel: device br502 left promiscuous mode Sep 16 19:19:39 node01 avahi-daemon[1532]: Withdrawing workstation service for macvlan0. Sep 16 19:19:39 node01 kernel: XFS (dm-16): Mounting Filesystem Sep 16 19:19:39 node01 kernel: XFS (dm-16): Ending clean mount Sep 16 19:19:39 node01 kernel: libvirt_lxc[4904]: segfault at 0 ip 00007ffe3cbf0df6 sp 00007ffe3fa03c98 error 4 in libc-2.17.so[7ffe3cabf000+1b6000] Sep 16 19:19:39 node01 abrt-hook-ccpp: Saved core dump of pid 1 (/usr/lib/systemd/systemd) to /var/tmp/abrt/ccpp-2014-09-16-19:19:39-1 (716800 bytes) Sep 16 19:19:39 node01 journal: Cannot recv data: Connection reset by peer Sep 16 19:19:39 node01 journal: internal error: guest failed to start: In libvirt-1.2.6 work fine. LXC config: <domain type='lxc' id='5933'> <name>ce7-t1</name> <uuid>f80ad54d-6560-4bd0-aa6d-df3e29888914</uuid> <memory unit='KiB'>2097152</memory> <currentMemory unit='KiB'>2097152</currentMemory> <memtune> <hard_limit unit='KiB'>2097152</hard_limit> <soft_limit unit='KiB'>2097152</soft_limit> <swap_hard_limit unit='KiB'>3145728</swap_hard_limit> </memtune> <vcpu placement='static'>2</vcpu> <resource> <partition>/machine</partition> </resource> <os> <type arch='x86_64'>exe</type> <init>/sbin/init</init> </os> <features> <privnet/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/libexec/libvirt_lxc</emulator> <filesystem type='block' accessmode='passthrough'> <source dev='/dev/data/ce7-t1'/> <target dir='/'/> </filesystem> <filesystem type='ram' accessmode='passthrough'> <source usage='524288' units='KiB'/> <target dir='/dev/shm'/> </filesystem> <interface type='direct'> <mac address='02:00:00:58:d8:15'/> <source dev='br502' mode='bridge'/> </interface> <console type='pty' tty='/dev/pts/2'> <source path='/dev/pts/2'/> <target type='lxc' port='0'/> <alias name='console0'/> </console> </devices> <seclabel type='none'/> </domain> Where br502 attached to vlan interface : #brctl show br502 bridge name bridge id STP enabled interfaces br502 8000.002590e2da34 no eno1.502 In 1.2.7 and 1.2.8 lxc with nat network work fine. b.r. Maxim Kozin

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[libvirt-users] cgroups inside LXC containers losts memory limits after some time
by mxs kolo 18 Sep '14

18 Sep '14

Hi all I have CentOS Linux release 7.0.1406, libvirt 1.2.7 installed. Just after create and start inside LXC container present cgroups. Example for memory: [root@ce7-t1 /]# ls -la /sys/fs/cgroup/memory/ total 0 drwxr-xr-x 2 root root 0 Sep 15 17:14 . drwxr-xr-x 12 root root 280 Sep 15 17:14 .. -rw-r--r-- 1 root root 0 Sep 15 17:14 cgroup.clone_children --w--w--w- 1 root root 0 Sep 15 17:14 cgroup.event_control -rw-r--r-- 1 root root 0 Sep 15 17:15 cgroup.procs -rw-r--r-- 1 root root 0 Sep 15 17:14 memory.failcnt --w------- 1 root root 0 Sep 15 17:14 memory.force_empty -rw-r--r-- 1 root root 0 Sep 15 17:14 memory.kmem.failcnt -rw-r--r-- 1 root root 0 Sep 15 17:14 memory.kmem.limit_in_bytes -rw-r--r-- 1 root root 0 Sep 15 17:14 memory.kmem.max_usage_in_bytes -r--r--r-- 1 root root 0 Sep 15 17:14 memory.kmem.slabinfo -rw-r--r-- 1 root root 0 Sep 15 17:14 memory.kmem.tcp.failcnt -rw-r--r-- 1 root root 0 Sep 15 17:14 memory.kmem.tcp.limit_in_bytes -rw-r--r-- 1 root root 0 Sep 15 17:14 memory.kmem.tcp.max_usage_in_bytes -r--r--r-- 1 root root 0 Sep 15 17:14 memory.kmem.tcp.usage_in_bytes -r--r--r-- 1 root root 0 Sep 15 17:14 memory.kmem.usage_in_bytes -rw-r--r-- 1 root root 0 Sep 15 17:14 memory.limit_in_bytes -rw-r--r-- 1 root root 0 Sep 15 17:14 memory.max_usage_in_bytes -rw-r--r-- 1 root root 0 Sep 15 17:14 memory.memsw.failcnt -rw-r--r-- 1 root root 0 Sep 15 17:14 memory.memsw.limit_in_bytes -rw-r--r-- 1 root root 0 Sep 15 17:14 memory.memsw.max_usage_in_bytes -r--r--r-- 1 root root 0 Sep 15 17:14 memory.memsw.usage_in_bytes -rw-r--r-- 1 root root 0 Sep 15 17:14 memory.move_charge_at_immigrate -r--r--r-- 1 root root 0 Sep 15 17:14 memory.numa_stat -rw-r--r-- 1 root root 0 Sep 15 17:14 memory.oom_control ---------- 1 root root 0 Sep 15 17:14 memory.pressure_level -rw-r--r-- 1 root root 0 Sep 15 17:14 memory.soft_limit_in_bytes -r--r--r-- 1 root root 0 Sep 15 17:14 memory.stat -rw-r--r-- 1 root root 0 Sep 15 17:14 memory.swappiness -r--r--r-- 1 root root 0 Sep 15 17:14 memory.usage_in_bytes -rw-r--r-- 1 root root 0 Sep 15 17:14 memory.use_hierarchy -rw-r--r-- 1 root root 0 Sep 15 17:14 notify_on_release -rw-r--r-- 1 root root 0 Sep 15 17:14 tasks Command "free" inside LXC showed almost normal values: [root@ce7-t1 /]# free total used free shared buffers cached Mem: 1048576 32972 1015604 4473848 0 -4445364 -/+ buffers/cache: 4478336 -3429760 Swap: 1048576 0 1048576 (some problem with negative values) After unpredictable time passed (1-5 day ?), cgroups inside LXC magicaly removed. "free" in such containers show 2^53-1 as maximum values: [root@puppet01 /]# free total used free shared buffers cached Mem: 9007199254740991 591180 9007199254149811 0 0 267924 -/+ buffers/cache: 323256 9007199254417735 Swap: 0 0 0 And no more any cgroups presented at least in memory category: [root@puppet01 /]# ls -la /sys/fs/cgroup/memory/ total 0 b.r. Maxim Kozin

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[libvirt-users] Using custom QEMU binaries with libvirt
by Joaquim Barrera 18 Sep '14

18 Sep '14

Hi all, I compiled a custom version of QEMU 2.0.0 and I am having hard times to make it available to libvirt. Just to clarify, if I execute /usr/local/bin/qemu-system-x86_64 it does performs good. But when I put this very same path to <emulator> tag in a domain configutation, when i start the domain I get error: Failed to start domain vm1 error: internal error: process exited while connecting to monitor: libvirt: error : cannot execute binary /usr/local/bin/qemu-system-x86_64: Permission denied I tried setting +x permission to all the binaries in /usr/local/bin, disabling apparmor profile for libvirtd, creating and putting to complain a profile for /usr/local/bin/qemu-system-x86_64, creating a softlink to /usr/bin/kvm-spice to the custom binary and leaving <emulator> as default... At the end of http://www.gossamer-threads.com/lists/openstack/dev/40033 I found something about AppArmor, and enabling bios.bin reading somewhere, but I got a little confused here. The most disapointing thing here, is that using qemu 1.7 I could use my custom build, but apparently something changed with 2.0 (or with libvirt integration). Any ideas? Thanks!

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[libvirt-users] VM status when guest poweroff
by Hong-Hua.Yin＠freescale.com 18 Sep '14

18 Sep '14

Hi， I tried QEMU on ARM/PPC platforms. If running poweroff command on guest, it should also shutoff the VM. But it shows the VM status still be 'running' instead of 'shutoff'. I guess it should be qemu issue, is it right? Best Regards, Olivia

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[libvirt-users] qemu:///system and qemu:///session
by navin p 16 Sep '14

16 Sep '14

Hi, I try to connect from virsh -c qemu:///session and it shows the VMs created by by that particular user (testuser). But when i try from root virsh -c qemu:///system i don't see the vms created by testuser. How do i make it appear in the root's virsh ie the vms created by testuser ? I need this because i need information for global VM statistics created by all users. Can someone help me regarding this ? Regards, Navin

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[libvirt-users] virsh's editor configuration
by lejeczek 16 Sep '14

16 Sep '14

hi all where/how to change vim's I presume configuration, one that virsh uses? thanks. P.

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[libvirt-users] grep ip address from KVM DHCP log
by Jianfeng Tang 15 Sep '14

15 Sep '14

> Hi, I plan to use KVM internal network 'default' and grep dhcp log to figure out the IP address that assigned to my VM. I know I can configure static ip but I like to assign ip dynamically to avoid mgmt cost. Does anyone know where the dhcp log is? My KVM host is running Ubuntu Raring (13.04). It does not have file /var/log/daemon.log as some online doc mentioned. Thanks, ~Jianfeng >

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