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[libvirt-users] virsh configure bridge network
by Charlotte 20 Oct '17

20 Oct '17

i creat a docker-machine-kvm,now,virsh edit mymachine,there show : i don't know how configure, let my machine can accessed by public network. please help me

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[libvirt-users] Fwd: terminating on signal 15 from pid 2146 (/usr/sbin/libvirtd)
by Matwey V. Kornilov 19 Oct '17

19 Oct '17

Hello, I use libvirt 3.3.0 and qemu 2.9.0 My domain XML spec is the following: <domain type='qemu'> <name>s390_generic</name> <uuid>82b4d16e-b636-447e-9fda-41d44616bce8</uuid> <memory unit='KiB'>1048576</memory> <currentMemory unit='KiB'>1048576</currentMemory> <vcpu placement='static'>1</vcpu> <os> <type arch='s390x' machine='s390-ccw-virtio-2.9'>hvm</type> <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-s390x</emulator> <disk type='block' device='disk'> <driver name='qemu' type='raw' cache='none' io='native'/> <source dev='/dev/lvm_pda/libvirt_s390'/> <target dev='vda' bus='virtio'/> <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0000'/> </disk> <disk type='file' device='cdrom'> <driver name='qemu' type='raw'/> <target dev='sda' bus='scsi'/> <readonly/> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> <controller type='scsi' index='0' model='virtio-scsi'> <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0002'/> </controller> <interface type='bridge'> <mac address='52:54:00:e8:61:7e'/> <source bridge='br0'/> <model type='virtio'/> <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0001'/> </interface> <console type='pty'> <target type='sclp' port='0'/> </console> <memballoon model='virtio'> <address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0003'/> </memballoon> <panic model='s390'/> </devices> </domain> The issue is that when I try to start it, it starts and shutdowns immediately: virsh # start s390_generic Domain s390_generic started virsh # In the domain log file I see the following: 2017-10-19 18:10:21.633+0000: starting up libvirt version: 3.3.0, qemu version: 2.9.0(openSUSE Leap 42.3), hostname: oak.local LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/qemu-system-s390x -name guest=s390_generic,debug-threads=on -S -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-7-s390_generic/master-key.aes -machine s390-ccw-virtio-2.9,accel=tcg,usb=off,dump-guest-core=off -m 1024 -realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid 82b4d16e-b636-447e-9fda-41d44616bce8 -display none -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-7-s390_generic/monitor.sock,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -boot strict=on -device virtio-scsi-ccw,id=scsi0,devno=fe.0.0002 -drive file=/dev/lvm_pda/libvirt_s390,format=raw,if=none,id=drive-virtio-disk0,cache=none,aio=native -device virtio-blk-ccw,scsi=off,devno=fe.0.0000,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -drive if=none,id=drive-scsi0-0-0-0,readonly=on -device scsi-cd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0 -netdev tap,fd=26,id=hostnet0 -device virtio-net-ccw,netdev=hostnet0,id=net0,mac=52:54:00:e8:61:7e,devno=fe.0.0001 -chardev pty,id=charconsole0 -device sclpconsole,chardev=charconsole0,id=console0 -device virtio-balloon-ccw,id=balloon0,devno=fe.0.0003 -msg timestamp=on 2017-10-19T18:10:21.701184Z qemu-system-s390x: -chardev pty,id=charconsole0: char device redirected to /dev/pts/5 (label charconsole0) 2017-10-19T18:10:21.721299Z qemu-system-s390x: terminating on signal 15 from pid 2146 (/usr/sbin/libvirtd) 2017-10-19 18:10:21.985+0000: shutting down, reason=shutdown What is the issue? -- With best regards, Matwey V. Kornilov

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[libvirt-users] "virsh define" modify xml configuration file
by d tbsky 19 Oct '17

19 Oct '17

hi: I upgrade my system from rhel 7.3 to 7.4. so libvirt upgrade to 3.2. I found command "virsh define vm.xml" sometimes modify "vm.xml". I thought the command will read vm.xml, not write to it. is this kind of behavior by design? for example vm.xml with the line <cpu mode='custom' match='exact'> will be replaced with <cpu mode='custom' match='exact' check='partial'> Regards, tbskyd

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[libvirt-users] Can we disable write to /sys/fs/cgroup tree inside container ?
by mxs kolo 18 Oct '17

18 Oct '17

Hi all Each lxc container on node have mounted tmpfs for cgroups tree: [root-inside-lxc@tst1 ~]# mount | grep cgroups cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpuacct,cpu) cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset) cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory) cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices) cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer) cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio) cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup (rw,nosuid,nodev,noexec,relatime,net_prio,net_cls) cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event) cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd) cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb) cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids) It's by default, at least in my case. Problem is, that it's full cgroups tree - from hardware node and from all another containers on node. [root-inside-lxc@tst1 ~]# for i in `ls /sys/fs/cgroup/devices/machine.slice/machine-lxc*/devices.list`; do echo $i; cat $i; done /sys/fs/cgroup/devices/machine.slice/machine-lxc\x2d10297\x2dtst2.scope/devices.list c 1:3 rwm c 1:5 rwm c 1:7 rwm c 1:8 rwm c 1:9 rwm c 5:0 rwm c 5:2 rwm c 10:229 rwm b 253:6 rw c 136:* rwm /sys/fs/cgroup/devices/machine.slice/machine-lxc\x2d9951\x2dtst1.scope/devices.list c 1:3 rwm c 1:5 rwm c 1:7 rwm c 1:8 rwm c 1:9 rwm c 5:0 rwm c 5:2 rwm c 10:229 rwm b 253:7 rw c 136:* rwm Hardware node file, view inside tst1 container: [root-inside-lxc@tst1 ~]# cat /sys/fs/cgroup/devices/devices.list a *:* rwm What is best way to prevent viewing and editing of all cgroups structures except belonging to current lxc container (selinux, apparmor ) ? Why libvirt mount /sys/fs/cgroup/* inside container as rw ? We use kernel 3.10.0-693.2.2.el7.x86_64 and XFS and therefore our containers are privileged. Yes, we know that in such containers root can use SysRq at least for reboot hardware node. But problem with cgroups can be more hidden and cryptic. p.s. As show short test, root user can disable device zero on node [root-lxc@tst1 ~]# echo "c 1:5 rwm" > /sys/fs/cgroup/devices/devices.deny or all devices in another container [root-lxc@tst1 ~]# echo "a *:* rwm" > /sys/fs/cgroup/devices/machine.slice/machine-lxc\x2d10297\x2dtst2.scope/devices.deny b.r. Maxim Kozin

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[libvirt-users] File option for smbios.
by Julio Faracco 18 Oct '17

18 Oct '17

Hi guys, Does anybody knows if there is an option to set a binary file for smbios? Currently, I'm doing this approach: <qemu:commandline> <qemu:arg value='-smbios'/> <qemu:arg value='file=/var/run/libvirt/qemu/smbios_type_1.bin'/> </qemu:commandline> Has libvirt a method as <smbios mode='host'/> ? -- Julio Cesar Faracco

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[libvirt-users] virConnectIsAlive
by llilulu 17 Oct '17

17 Oct '17

Hi In my program , When libvirtd restart , the old libvirtd connection(virConnectPtr) has to reconnect, Before usr old virConnectPtr , I call virConnectIsAlive. but when I restart libvirtd , virConnectIsAlive return 1, and I continue other operate use the old virConnectPtr, program will receive signal pipe. I use libvirt event. before any api use, I call virEventRegisterDefaultImpl, and run virEventRunDefaultImpl. then use virConnectIsAlive, when I restart libvirtd, virConnectIsAlive will return 0, I want know how to use virConnectIsAlive， if virConnectIsAlive use keep alive message, what default the interval and count. Thanks

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[libvirt-users] should not libvirtd when stopped dismantle/remove net connections
by lejeczek 13 Oct '17

13 Oct '17

hi, I stop libvirsh and I see it removes vnetx interfaces, but those(at least) of bridge type remain in the system after daemon is stopped. Is this intended would you know? thanks, L.

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[libvirt-users] add/attache vol from pool - without xml ?
by lejeczek 11 Oct '17

11 Oct '17

hi fellows is that possible, as per subject? If yes then how would such a command like look like? many thanks, L.

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[libvirt-users] error: internal error: missing backend for pool type 11 (zfs)
by Nick Gilmour 04 Oct '17

04 Oct '17

Hi all, I'm trying to setup virt-manager with ZFS als storage on my Arch box. I have created a pool named virt-pool and tried to use it as storage. First with virt-manager and then in the terminal with virsh but I'm always getting the following errors: *virsh # pool-define-as --name zfsvirtpool --source-name virt-pool --type zfserror: Failed to define pool zfsvirtpoolerror: internal error: missing backend for pool type 11 (zfs)* But ZFS seems to be working fine: # zpool status pool: virt-pool state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM virt-pool ONLINE 0 0 0 x ONLINE 0 0 0 errors: No known data errors libvirt and VMM also. These are the installed versions: Virtual Machine Manager v.1.4.3 virsh v.3.7.0 libvirtd (libvirt) 3.7.0 I have found that there was a bug last year which is supposed to be fixed: *https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=827245 <https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=827245>* So why I'm getting this error. Is something wrong with my setup? Regards, Nick

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[libvirt-users] virDomainSaveImageDefineXML
by llilulu 02 Oct '17

02 Oct '17

Hi: When I make snapshot use virDomainSave,before I resume the snapshot , I use virDomainSaveImageDefineXML change the domain info, like disk path. but I can't change the <devices> , for example detach a disk or interface, Can't tell me what can I change use virDomainSaveImageDefineXML before resume snapshot.

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