- Users - libvirt List Archives

[libvirt-users] Cannot create a volume
by Daniele 09 Sep '13

09 Sep '13

Hi all, I'm trying to create a new volume in a netfs pool. The pool works correctly and it is active. If I try to create the volume from the virt-manager GUI nothing happens. While if I use virsh this is the result. *virsh # pool-list * *Name State Autostart * *-----------------------------------------* *routers active yes * * * *virsh # vol-create-as routers namevol 2G* *error: Failed to create vol vr1* *error: cannot create path '/var/lib/libvirt/images/routers/namevol': Invalid argument* What am I missing? Thanks for your help! Daniele

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[libvirt-users] Error Attaching Seventh VirtIO-SCSI Device to Guest
by McEvoy, James 09 Sep '13

09 Sep '13

I have run into a problem attempting to attach the seventh virtio-scsi device to a RHEL 6.4 Guest from a RHEL 6.4 host running libvirt version 0.10.2-18. I have a guest that is running RHEL6.4 where I can attach disks sda(boot), sdb, sdc, sdd, sde and sdf but when I try to attach sdg the virsh attach-disk command fails with the error: error: Failed to attach disk error: internal error Unable to determine model for scsi controller I logged Bug 996327 on this issue including an attached script to repro the bug but there has been no activity on that bug so far. This is the results when attaching virtio-scsi disks in a loop. Sdf is attached but sdg fails. virsh attach-disk --domain UEM004n1 --source /dev/GuestVols/UEM004-5 --target sdf --cache none --type disk --config --wwn 1fc7058865439717 --serial c7d11fc7058865439717 --shareable Disk attached successfully Vol UEM004-6 created virsh attach-disk --domain UEM004n1 --source /dev/GuestVols/UEM004-6 --target sdg --cache none --type disk --config --wwn 4d3ddb9d15b05e7e --serial 62fd4d3ddb9d15b05e7e --shareable error: Failed to attach disk error: internal error Unable to determine model for scsi controller The script to create and attach LVM volumes using virtio-scsi is available here: https://bugzilla.redhat.com/attachment.cgi?id=785925 Has anyone else run into this... I had the understanding that each virtio-controller could support 4K devices. --jim

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[libvirt-users] internal error: unexpected migration status in setup
by Thomas Stein 08 Sep '13

08 Sep '13

Hello. Suddenly on one of my vm's i get: 2013-09-06 09:44:39.501+0000: 2277: error : qemuMonitorJSONGetMigrationStatusReply:2377 : internal error: unexpected migration status in setup This happens when i try to migrate /and/ when i try to do a "savevm". error: Failed to save domain domain to /opt/virt-backup- blockcopy/domain/domain-memory error: internal error: unexpected migration status in setup What is this migration status thing and how can i change that? thanks and best regards t.

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[libvirt-users] Can I run a KVM guest with a btrfs subvolume as file system?
by Thomas Koch 07 Sep '13

07 Sep '13

Hi, I want to run a virtualized Debian stable KVM guest on a Debian stable host (to run untrusted stuff like Skype, Flash or eclipse with third-party plugins). Naturally host and guest will have many files in common and it would be nice to make us of btrfs deduplication. Now I found "direct kernel boot" but I could not find any documentation about it. Does it allow me to hand a btrfs subvolume of the host file system to the guest and the guest uses this subvolume as its own file system? I already asked this question here: http://serverfault.com/questions/536752/can-i-run-a-kvm-guest-with-a-btrfs- subvolume-as-file-system Regards, Thomas Koch

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[libvirt-users] Is virsh supposed to work on Windows?
by Fernando Lozano 07 Sep '13

07 Sep '13

Hi there, Sorry for the cross-post, but I seeked help on this issue before on those lists, but nobody answered. :-( I'm trying to use virsh and virt-viewer on Windows. I'm running the latest binaries from http://spice-space.org/download.html, that is, virt-viewer-x64-0.5.7.msi on a Windows 7 64-bits computer. So far I got remote-viewer.exe to work, after some pain. But have no sucess using virt-viewer.exe and virsh.exe. Are they supposed to work, or am I loosing my time? I know the kvm host setup (a CentOS 6.3 machine) is fine, because I can connect using virsh from other CentOS and RHEL machines. I'm using TLS to secure connenctions to libvirtd, without client certs. I had a litthe trouble finding where to put certificate files on the windows machine, but using Sysinternals ProcessMonitor I found they have to be on the obvious path: C:\usr\x86_64-w64-mingw32\sys-root\mingw\etc\pki{CA,libvirt} Even then virsh can't connect: virsh # connect qemu://kvmhost/system error: Failed to connect to the hypervisor error: Unable to set close-on-exec flag: Success ProcessMonitor "strace" doesn't help me find what went wrong. I'm sure I'm using the same *.pem files that works for Linux clients. It looks like virsh is opening and reading those files ok. ProccessMonitor shows a TCP connect and a TCP Disconnect events to the correct IP and port, both resulting SUCCESS. Any ideas? What can I do to debug virsh on Windows and find why it isn't connecting to libvirt on CentOS? I tried -d and -l on Windows and Linux but can't find where the debug logs are saved. If you want, I can send ProcessMonitor captured events. For Red Hat folks out there: I need this working so I can get approval to buy subscriptions, The idea is production hosts will be RHEL. :-) If not, my boss may end up buying XenServer ;-) []s, Fernando Lozano

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[libvirt-users] Compiling libvirt for Xenserver 6.2
by Faisal Ali 06 Sep '13

06 Sep '13

Hi, I am trying to compile libvirt-1.1.2 for Xenserver 6.2 using there DDK VM, however, it keeps giving error saying that it needs xenstore.h header file. However, I think Xenserver 6.2 is using older xs.h header file. Here is the excerpt of the beginning and end of the configure command ./configure . . checking for xenstore.h... no checking for xen/xen.h... yes checking for xen/version.h... yes checking for xen/dom0_ops.h... yes checking for xen/sys/privcmd.h... no checking for xen/linux/privcmd.h... no configure: error: You must install the Xen development package to compile Xen driver with -lxenstore How do compile with libvirt to look at xs.h file. Thanks

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[libvirt-users] windows guest network kept down automatically when several windows guest running in one KVM host,
by cochen 05 Sep '13

05 Sep '13

Hi all: I have some kvm host(rhel 6.4, 2.6.32-358.0.1.el6.x86_64), I ran several windows guest on it(more than 10 guest on one host and the guest os are win7-32/win7-64/win2k8), but the guest network kept down automatically, lost package. I tried virtio drive and e1000 drive,but it didn't work. However, when I run cmd.exe ping some other subnet ip it worked. The host and guest are connected by bridge. Here is some configure infomation of my guest: <interface type='bridge'> <mac address='aa:aa:aa:49:39:71'/> <source bridge='kvmbr3'/> <model type='e1000'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </interface> brctl show as follow: kvmbr28000.b8ca3a5cbea2noeth2 vnet0 vnet11 vnet13 vnet15 vnet17 vnet19 vnet2 vnet21 vnet23 vnet25 vnet27 vnet29 vnet5 vnet7 vnet9 The /etc/sysctl.conf configure as follow: # Kernel sysctl configuration file for Red Hat Linux # # For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and # sysctl.conf(5) for more details. # Controls IP packet forwarding net.ipv4.ip_forward = 0 #net.ipv4.ip_forward = 1 # Controls source route verification net.ipv4.conf.default.rp_filter = 1 # Do not accept source routing net.ipv4.conf.default.accept_source_route = 0 # Controls the System Request debugging functionality of the kernel kernel.sysrq = 0 # Controls whether core dumps will append the PID to the core filename. # Useful for debugging multi-threaded applications. kernel.core_uses_pid = 1 # Controls the use of TCP syncookies net.ipv4.tcp_syncookies = 1 # Disable netfilter on bridges. # Controls the default maxmimum size of a mesage queue kernel.msgmnb = 65536 # Controls the maximum size of a message, in bytes kernel.msgmax = 65536 # Controls the maximum shared segment size, in bytes kernel.shmmax = 68719476736 # Controls the maximum number of shared memory segments, in pages kernel.shmall = 4294967296 ########### add by operation V1.0 begin ############ net.ipv4.ip_local_port_range = 32768 65000 net.core.rmem_max = 8388608 net.core.wmem_max = 8388608 net.ipv4.tcp_rmem = 4096 87380 8388608 net.ipv4.tcp_wmem = 4096 65536 8388608 net.ipv4.tcp_max_syn_backlog = 8192 net.ipv4.tcp_window_scaling = 0 net.ipv4.tcp_sack = 0 net.ipv4.tcp_timestamps = 0 kernel.panic = 5 vm.swappiness = 51 ########### add by operation V1.0 end ############ net.bridge.bridge-nf-call-ip6tables = 0 net.bridge.bridge-nf-call-iptables = 0 net.bridge.bridge-nf-call-arptables = 0 #add by wdh #net.ipv4.conf.all.proxy_arp = 1 Best Regards, cochen

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[libvirt-users] Create ESXi vmknic using libvirt xml
by varun bhatnagar 04 Sep '13

04 Sep '13

Hi, I am using libvirt on ESX hypervisor. Iam trying to create "vmknic" using virsh but all my attempts are failing. Can anyone help me in achieving this? Where can I find the xml template for this? or is there any wiki link which I can follow to achieve this? Regards, Varun

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[libvirt-users] No valid cgroup for machine...
by Jaka Hudoklin 04 Sep '13

04 Sep '13

Hello! How do i get pass this error? offlinehacker:~/ $ virsh --debug 0 -c lxc:/// create o1.xml create: file(optdata): o1.xml error: Failed to create domain from o1.xml error: internal error: No valid cgroup for machine c1 My cgroups seem to be mounted: cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,release_agent=/run/current-system/systemd/lib/systemd/systemd-cgroups-agent,name=systemd) cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset) cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpuacct,cpu) 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) mqueue on /dev/mqueue type mqueue (rw,relatime) I'm running libvirtd 1.1.1. Thanks!

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[libvirt-users] Customize UNIX socket permissions
by Jonathan Lebon 04 Sep '13

04 Sep '13

Hi, I have a qemu domain which uses a virtio-serial port. On the host, the unix socket is created in /var/lib/libvirt/qemu. As non-root, I'd like to be able to communicate through this unix socket. The issue is that the socket is created as qemu:qemu with permissions 755 (does this come from libvirt's umask?). Is there any way to affect this permission from the domain's XML definition file? Even if it has to be created as qemu:qemu, having a permission of 775 would also be an acceptable solution. Thanks, Jonathan

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