- Users - libvirt List Archives

[libvirt-users] syslog messages after cd-rom removal
by Alexander Topolanek 31 Jan '11

31 Jan '11

Sorry, I know this is not really libvirt related, but I'm searching for a solution sind about an hour and cannot find anything that helps me ... Ok, I used to install a standard debian in a kvm instance, and removed the virtual cd-rom after installation. Now I'm getting this triplet every five minutes in my syslog: Jan 26 19:25:12 srv62 kernel: [ 1324.267675] hdc: task_in_intr: status=0x41 { DriveReady Error } Jan 26 19:25:12 srv62 kernel: [ 1324.267683] hdc: task_in_intr: error=0x04 { AbortedCommand } Jan 26 19:25:12 srv62 kernel: [ 1324.267685] ide: failed opcode was: 0xec and I'm looking how to get rid of the device. thanks for any help Alexander

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[libvirt-users] compilation error
by antoni artigues 28 Jan '11

28 Jan '11

Hello I'm trying to compile libvirt-0.8.6 on RHEL4 with kernel 2.6.9-67 The make command returns: -------------------- util/interface.c: In function `ifaceGetVlanID': util/interface.c:355: error: `GET_VLAN_VID_CMD' undeclared (first use in this function) util/interface.c:355: error: (Each undeclared identifier is reported only once util/interface.c:355: error: for each function it appears in.) make[3]: *** [libvirt_util_la-interface.lo] Error 1 make[3]: Leaving directory `/root/InstalledPackages/libvirt-0.8.6/src' make[2]: *** [all] Error 2 make[2]: Leaving directory `/root/InstalledPackages/libvirt-0.8.6/src' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/root/InstalledPackages/libvirt-0.8.6' make: *** [all] Error 2 -------------------- I have saw that GET_VLAN_VID_CMD should be in if_vlan.h file, but it is not present. What do I have to update in my system to avoid this error? Thanks in advance regards Antoni Artigues

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[libvirt-users] libvirtd + vir-manager + kerberos
by Thomas Schweikle 28 Jan '11

28 Jan '11

Hi! Having two hosts installed with libvirtd, kvm, qemu on (Ubuntu 10.10). Now I have one big problem and one less: I have set up kerberos for both hosts. Created the principal "libvirt/srv1.example.org(a)EXAMPLE.ORG" and "libvirt/srv2.example.org(a)EXAMPLE.ORG", Exported the krb5.keytab, Installed it and tested the servers: srv1.example.org: I can connect using kerberos after acquiring a ticket with kinit. srv2.example.org: I am asked for user and password. Setup seems to be identical. Is there a way to debug, what is going on on this server? I'd like to have both respect kerberos and allow logging in with no password it already authenticated! Here is what I've set up: /etc/sasl2/libvirt.conf listen_tls = 0 listen_tcp = 1 mdns_adv = 0 auth_unix_ro = "none" auth_unix_rw = "none" auth_tcp = "sasl" /etc/sasl2/libvirt.conf mech_list: gssapi keytab: /etc/libvirt/krb5.kqemu sasldb_path: /etc/libvirt/passwd.db I start libvirtd with: KRB5_KTNAME=/etc/libvirt/krb5.kqemu /usr/sbin/libvirtd -d --listen In virt-manager I've set both hosts: qemu+tcp://srv1.example.org qemu+tcp://srv2.example.org Since both configs are identical (I've ran diff on them) I am a bit lost at the moment. I do not have any idea why it works for one host, but not the other. Any ideas? -- Thomas

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[libvirt-users] multi-user libvirt / virsh?
by Tomasz Chmielewski 28 Jan '11

28 Jan '11

I was wondering if libvirt / virsh was designed for multi-user environments. I.e. I was thinking of the "roles", i.e. root would be able to do everything, but regular users would only be able to stop/start/suspend, or use vnc with the virtual machines which belong to them. Is it possible with libvirt / virsh? If not, are there any other options to achieve it? -- Tomasz Chmielewski http://wpkg.org

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[libvirt-users] Allocating Sockets Cores and Threads.
by joe fu 27 Jan '11

27 Jan '11

Hi, Is there any other way I could allocate sockets, cores and threads to my virtual machine? I looked over the virsh man page and I didn't find anything that talks about sockets, threads and cores. I edited the vm xml file and added this... <cpu> <topology sockets='1' cores='2' threads='1'/> </cpu> Saw this in the libvirt documents, http://libvirt.org/formatdomain.html Setting this up shows me a single core in my vm, but I don't see any sockets and threads. Can somebody tell me how to do it in a right way so that I see all sockets, cores and threads allocated in my vm. Thanks joe

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[libvirt-users] Is there a way to suppress netfilter rules (default.xml)?
by Oliver Schneider 27 Jan '11

27 Jan '11

Hi, in order to get hook scripts to work, I used a backported version of libvirtd on Ubuntu 10.04 LTS. Here are the details: Compiled against library: libvir 0.8.3 Using library: libvir 0.8.3 Using API: QEMU 0.8.3 Running hypervisor: QEMU 0.12.5 After adjusting the apparmor profile to accept the hook scripts under /etc/libvirt/hooks/, I am able to start and stop domains again, but only the script named "daemon" gets executed, the one named "qemu" gets ignored. All my domains are KVM domains. I thought the "qemu" script should apply to that?! My actual goal is to suppress the rules or better yet execute my own script (in order to amend or replace the libvirt rules) after insertion of the "default" rules during startup of the daemon. The reason being that I need to do some PNAT and other custom handling ... So far I have not been able to catch the state where the bridge has already been created and the rules inserted. Thus I've had to manipulate the firewall rules manually (well, still scripted ;)) after booting the host. Any ideas? Thanks, // Oliver PS: Side-note, I tried using the newfilter facilities, but there seems to be no way to insert rules at the start of a chain and similar things. PPS: # cat /etc/libvirt/qemu/networks/default.xml <network> <name>default</name> <bridge name="virbr%d" /> <forward/> <ip address="192.168.122.1" netmask="255.255.255.0" /> </network>

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[libvirt-users] invalid argument error when using cache parameter
by Igor Serebryany 26 Jan '11

26 Jan '11

hi, i tried to add a 'cache' argument to the 'driver' element in my domainxml for qemu/kvm. i tried adding cache="none" as well as "writethrough" and "writeback", but every time i get these errors: libvirtError: internal error process exited while connecting to monitor: char device redirected to /dev/pts/1 qemu: could not open disk image /vms/test.img: Invalid argument the full driver line looks like this: <driver name="qemu" type="raw" cache="none"/> the same domainxml works just fine without the cache parameter. does anyone know what i'm doing wrong? is there some other way to set the default cache policy on qemu/kvm? i didn't see anything in the config file... --igor

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[libvirt-users] git repository access via HTTPS
by Fyodor Kupchik 25 Jan '11

25 Jan '11

Hi, I've just tried to do a fresh checkout (git clone) with libvirt sources tree and had no luck because it seems to be inaccessible/non-existent at all. Is this temporary situation or I have to only use git:// proto? I'm asking because I'm sitting behind rather restrictive corporate proxy which does not allow anything but a little set of protocols such as HTTP(S). Thanks.

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[libvirt-users] libvirt and shared storage SAN Fiber Channel
by Frederic SOULIER 25 Jan '11

25 Jan '11

Hi, I'm looking information about using libvirt with san (fiber channel) based storage and googling for a while i don't see anything about it. I send this email in order to get advices about libvirt and shared storage We use here, for 3 years now, 8 linux centos server connected to an hitachi FC SAN (multipath devices). Each server run Xen dom0 and use SAN LUNs to store Virtual machine filesystem ( basically one LUN per VM). For each LUN we create an LVM VolGroup. On each VolGroup we create Logical volumes (one for swap, one for root filesystem). We present to the vm the 2 Logical Volume as it was raw disk. In this system we can make live migration between host using local scripts which assume than one VolumeGroup is used only by one host at the same time on the 8 node "cluster". We don't use any clustered aware environment like CLVM. We plan to migrate to kvm and libvirt with the new centos release (CentOS 6). Reading the upstream documentation and libvirt i don't find anything about using libvirt with san storage except for iscsi. Do you have any link or idea about using kvm + libvirt + SAN FC storage that permit to make live migration between node (we think about RHCS with GFS2 but it seems very complex to set up) ? Do you think i can use the LUN's SAN as local storage on each node. For each LUN create an LVM Volume Group (same on each node, like that we doing now with xen) and use it as volume pool in libvirt. Is volume pool in libvirt is 'cluster aware' (Can i access it simultaneously from different node) ? I'm beginner in kvm so any advice will be great. regards -- Frederic Soulier DSI / Service Système Université Toulouse 1 Capitole 2 rue du doyen Gabriel Marty 31 042 Toulouse Cedex 9 Tel: +33 5 61 63 39 98 Fax: +33 5 61 63 37 98

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[libvirt-users] Cgroup
by Nikita A Menkovich 24 Jan '11

24 Jan '11

Hello, I'm running Debian Sid with libvirt/qemu/kvm packages from experimental: $ qemu --version QEMU emulator version 0.13.0 (Debian 0.13.0+dfsg-2), Copyright (c) 2003-2008 Fabrice Bellard $ kvm --version QEMU emulator version 0.13.0 (qemu-kvm-0.13.0 Debian 0.13.0+dfsg-2), Copyright (c) 2003-2008 Fabrice Bellard $ libvirtd --version libvirtd (libvirt) 0.8.6 /etc/libvirt/qemu.conf cgroup_controllers = [ "cpu", "devices" ] cgroup_device_acl = [ "/dev/null", "/dev/full", "/dev/zero", "/dev/random", "/dev/urandom", "/dev/ptmx", "/dev/kvm", "/dev/kqemu", "/dev/rtc", "/dev/hpet", "/dev/net/tun", ] /etc/cgconfig.conf mount { cpu = /dev/cgroup/cpu; cpuacct = /dev/cgroup/cpuacct; devices = /dev/cgroup/devices; # memory = /dev/cgroup/memory; blkio = /dev/cgroup/blkio; } When I'm running virsh, and want to change cpu shares I receive an error virsh # schedinfo --set cpu.shares=2048 test Scheduler : posix error: internal error cannot find cgroup for domain test Really I didn't have any group test in $ ls /dev/cgroup/cpu/sysdefault/libvirt/qemu/ cgroup.clone_children cgroup.event_control cgroup.procs cpu.shares notify_on_release tasks It happens if I run libvirt as usual user, how can I grant access to create cgroup to ordinary user? -- Nikita A Menkovich JID: menkovich(a)gmail.com

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