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[libvirt-users] pool-refresh on iSCSI pools does not actually rescan the bus
by Guido Winkelmann 24 Aug '11

24 Aug '11

Hi, When I add a new LUN on an iscsi target and then issue a pool-refresh command on the respective storage pool in libvirt, libvirt will not find the new lun (or notice if luns have been removed). I'm using a Dell PowerVault MD3200i iSCSI Array to hold the volumes for virtual servers in libvirt. In libvirt, I have defined the storage pool as this: <pool type='iscsi'> <name>iscsi01</name> <uuid>52eb9c59-a7ac-a4e8-a26e-7ca112f0dd70</uuid> <capacity>85899345920</capacity> <allocation>85899345920</allocation> <available>0</available> <source> <host name='10.3.1.15'/> <device path='iqn.1984-05.com.dell:powervault.md3200i.6782bcb0000859f3000000004d3eec7d'/> </source> <target> <path>/dev/disk/by-id</path> <permissions> <mode>0700</mode> <owner>-1</owner> <group>-1</group> </permissions> </target> </pool> If I add a new LUN on the iSCSI array, and then issue the command "pool- refresh iscsi01", followed by "vol-list iscsi01" in virsh, the list does not contain the new volume. The only workaround I have found so far for this is to manually log in to the host server as root, do "iscsiadm -m discovery -t sendtargets -p 10.3.1.15" and then issue the pool-refresh command in libvirt. Libvirt is libvirt-0.8.3-4.fc14.x86_64 on Fedora 14. Is this supposed to work like this? If not, will a newer version fix that problem? Regards, Guido

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[libvirt-users] Strange libvirt exit status 1 (LXC containers)
by Stephen Eilert 24 Aug '11

24 Aug '11

Hello, I've encountered the following error, trying to start a domain: error: internal error Child process (PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/X11R6/bin LIBVIRT_DEBUG=2 LIBVIRT_LOG_OUTPUTS=2:syslog:libvirtd /usr/libexec/libvirt_lxc --name vm_14 --console 18 --handshake 21 --background --veth veth1) status unexpected: exit status 1 I see nothing relevant in syslog, google searches have returned nothing. Starting libvirt_lxc manually seems to work (the process never returns), but of course the VMs do not start. I am at a loss on what to do next. I'm running Ubuntu 10.04, which is itself a guest system running under virtual box (host is OSX Lion). I've compiled libvirt from git (using /usr as the --prefix, after removing the OS package), LXC containers are installed from a PPA, as the default Ubuntu kernel doesn't enable network namespaces. LXC itself doesn't appear to be a problem, as I can start VMs with lxc-start. Since I required libvirt's API, using LXC directly is not desirable. Does anyone have any tips on what I should be looking for? Thanks. -- Stephen -- Domain definition follows: <domain type='lxc'> <name>vm_14</name> <uuid>9243fb5b-6b26-44af-7408-69c7f2d4ff03</uuid> <memory>262144</memory> <currentMemory>262144</currentMemory> <vcpu>1</vcpu> <os> <type arch='x86_64'>exe</type> <init>/sbin/init</init> </os> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>preserve</on_crash> <devices> <emulator>/usr/libexec/libvirt_lxc</emulator> <filesystem type='mount' accessmode='passthrough'> <source dir='/var/lib/lxc/vmpea/rootfs/'/> <target dir='/'/> <readonly/> </filesystem> <filesystem type='mount' accessmode='passthrough'> <source dir='/home/lxcadmin/repositories/14'/> <target dir='/home/lxcmaster'/> </filesystem> <interface type='network'> <mac address='52:54:00:10:7a:e7'/> <source network='default'/> <target dev='veth0'/> </interface> <console type='pty'> <target type='serial' port='0'/> </console> </devices> </domain>

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[libvirt-users] migration in parallel
by Yih-Herng Chuang 23 Aug '11

23 Aug '11

Hi, We ran into various errors when tried to run migration in parallel. Does libvirt support migration in parallel? Regards, --Yih Yih-Herng Chuang IBM Center for Microsoft Technologies 3600 Carillon Point, Kirkland WA 98033 (DID) (425) 803-7285 (TIE) 977-7285 YihHerng(a)us.ibm.com

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[libvirt-users] Problem to migrate virtual machine between two hosts with same uuid
by info＠umbertocarrara.it 23 Aug '11

23 Aug '11

hi at all, i'm trying to migrate a vm between two host but fails, this is what I did: virsh # start win2008 Domain win2008 started virsh # list Id Name State ---------------------------------- 1 win2008 running virsh # migrate --live win2008 qemu+ssh://host2/system error: internal error Attempt to migrate guest to the same host 00010203-0405-0607-0809-0a0b0c0d0e0f if I type on both hosts: host1 virsh # sysinfo ....... <system> <entry name='manufacturer'>Supermicro</entry> <entry name='product'>X9SCL/X9SCM</entry> <entry name='version'>0123456789</entry> <entry name='serial'>0123456789</entry> <entry name='uuid'>00010203-0405-0607-0809-0A0B0C0D0E0F</entry> <entry name='sku'>To be filled by O.E.M.</entry> <entry name='family'>To be filled by O.E.M.</entry> </system> ........ host2 virsh # sysinfo ....... <system> <entry name='manufacturer'>Supermicro</entry> <entry name='product'>X9SCL/X9SCM</entry> <entry name='version'>0123456789</entry> <entry name='serial'>0123456789</entry> <entry name='uuid'>00010203-0405-0607-0809-0A0B0C0D0E0F</entry> <entry name='sku'>To be filled by O.E.M.</entry> <entry name='family'>To be filled by O.E.M.</entry> </system> ........ The problem seems to be the same uuid on both hosts, 1) is correct? 2) if is correct, how I can resolve? Thanks a lot in advance Umberto -- ------------------------------------------ mediaus around the web Via Romana, 2143 - 55100 Antraccoli - LUCCA Web: http://www.mediaus.it Tel.: +39 (0) 583 493745/464501 Mob. +39 349.5422881 Fax.: +39 (0) 583 471420 Mailto:info@mediaus.it

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[libvirt-users] pool assumed to have 512B sector
by David Cohen 23 Aug '11

23 Aug '11

Hi, When creating a dedicated storage pool on a FC attached storage with sector size of 4096B and size of 2TB, the storage pool is created but reported as 1/8 of it's size, the same follows for any volume created in the same storage pool: # virsh pool-info guest_images_disk Name: guest_images_disk UUID: 30247222-c1fb-8749-b833-a73782198d26 State: running Persistent: yes Autostart: yes Capacity: 256.00 GB Allocation: 122.07 MB Available: 255.88 GB -- David Cohen Grid Computing Physics Department Technion - Israel Institute of Technology Phone: 972-4-8293668 Fax: 972-4-8295755 Cellular: 972-54-5385664

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[libvirt-users] ANNOUNCE: oz0.6.0 release
by Chris Lalancette 22 Aug '11

22 Aug '11

All, I'm pleased to announce release 0.6.0 of Oz. Oz is a program for doing automated installation of guest operating systems with limited input from the user. Release 0.6.0 is a bugfix and feature release for Oz. Some of the highlights between Oz 0.5.0 and 0.6.0 are: - The ability to specify the destination for the ICICLE output from oz-install and oz-generate-icicle - pydoc class documentation for all internal Oz classes - Automatic detection of KVM or QEMU at runtime (this allows oz to be used within virtual machines, although with a large performance hit) - Less scary warning messages in the debug output - Printing of the screenshot path when a build fails - Ability to run multiple Oz installs of the same OS at the same time - Support for OEL and ScientificLinux - Support for RHEL-5.7 - Support for CentOS 6 - Support for OpenSUSE arbitrary file injection and command execution - Ability to make the TDL (template) parsing enforce a root password - Rejection of localhost URLs for repositories (since they must be reachable from the guest operating system, localhost URLs make no sense) Fedora-14, Fedora-15, and RHEL-6 packages are available for this release. Note that to install the RHEL-6 packages, you must be running RHEL-6.1 or later. Instructions on how to get and use Oz are available at http://aeolusproject.org/oz.html If you have any questions or comments about Oz, please feel free to contact aeolus-devel(a)lists.fedorahosted.org or me (clalance(a)redhat.com) directly. Thanks to everyone who contributed to this release through bug reports, patches, and suggestions for improvement. -- Chris Lalancette

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[libvirt-users] issue with virErrorInitialize
by Sharad Mishra 22 Aug '11

22 Aug '11

One of my team mate investigated the issue where libvirt-cim was segfaulting when unloading providers. More info on this issue is at https://www.redhat.com/archives/libvirt-users/2011-August/msg00069.html Here is the gist of his investigation - I've looked into the libvirt source code and the reason for issues with the unload of libvirt-cim providers is there (and cimprovider -r forces an unload, just as cimserver shutdown does). virConnectOpen() does call virInitialize() which then will initialize the gcrypt library after initializes the thread setup ->virThreadInitialize(), creates the error reporting structure ->virErrorInitialize() and initialize a random number generator ->virRandomInitialize(). The issue is hidden in virErrorInitialize(). It calls virErrorInitialize() which uses the wrapper function virThreadLocalInit(&virLastErr, virLastErrFreeData);. virThreadLocalInit() calls pthread_create() with a destructor function (virLastErrFreeData()) which will be called on thread exits. Trouble here is that pthread_key_delete() is never called in libvirt, but next time the system runs through the key list and libvirt has been unloaded the system will jump to an already unloaded function (the pointer were virLastErrFreeData() was loaded formerly) and consequently crash the process. Fixing this will not be easy, but a start would be a libvirt function on its externalize interface that allows cleanup short before library unload, or alternatively libvirt does the thread key delete on library unload. Thanks Sharad Mishra Open Virtualization Linux Technology Center IBM

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[libvirt-users] How to Connect a new CD via virt-manager
by Marc Haber 22 Aug '11

22 Aug '11

Hi, I have virt-manager 0.9 connecting to a libvirtd 0.9.3 on Debian unstable. Hypervisor being used is KVM. In a VM, I can select the "IDE CDROM 1" and click on "disonnect" which makes the virtual disk disappear from the virtual drive and the former disconnect button now reads "connect". Hence, when I click there, nothing happens. Currently, the only way I am aware to get a new CD in the virtual drive is to delete it and to add a new virtual CD drive. Is this a bug, or am I doing things wrong? Greetings Marc -- ----------------------------------------------------------------------------- Marc Haber | "I don't trust Computers. They | Mailadresse im Header Mannheim, Germany | lose things." Winona Ryder | Fon: *49 621 72739834 Nordisch by Nature | How to make an American Quilt | Fax: *49 3221 2323190

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[libvirt-users] Invitation to connect on LinkedIn
by Hao Pan 22 Aug '11

22 Aug '11

LinkedIn ------------ I'd like to add you to my professional network on LinkedIn. - Hao Hao Pan Student at Peking University China Confirm that you know Hao Pan https://www.linkedin.com/e/qej7u0-grmy9fff-2v/isd/3931333441/YXbn8TLa/ -- (c) 2011, LinkedIn Corporation

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[libvirt-users] Detaching LVM volume from Windows guest
by mkey 20 Aug '11

20 Aug '11

Hello, I have some difficulties regarding to above title. Windows as guest OS is running on KVM(Ubuntu natty). After attaching LVM volume to guest OS and did "safely remove device" in guest windows, detaching volume was failed. > root@localhost:/opt/win# virsh detach-disk testwin vdc > error: Failed to detach disk > errpr: operation failed: detaching virtio-disk2 device failed: Device 'virtio-disk2' not found But kvm(qemu?) seems like detaching device successfully. > root@localhost:/opt/win# virsh qemu-monitor-command testwin 'info block' > drive-virtio-disk0: type=hd removable=0 file=/opt/win/win2008server.virtio.img ro=0 drv=qcow2 encrypted=0 So, problem is, libvirt doesn't know detaching, but kvm(qemu) knows. Again, please let me know if anybody has workaround. P.S. at some website, I found "hotunplugging is not supported in current libvirt", is that related on this matter? Regards, mkey

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