search for: elementsdisk

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2018 Aug 08
3
Mount URL as cdrom/iso KVM/QEMU
Hi Folks, According to the examples in http://libvirt.org/formatdomain.html#elementsDisks it should be possible to mount an iso /url as a cdrom, the example given is: </disk> <disk type='network' device='cdrom'> <driver name='qemu' type='raw'/> <source protocol="http" name="url_path"> <host...
2010 May 25
2
How to obtain rights to extend libvirt documentation pages
For example, http://libvirt.org/formatdomain.html#elementsDisks does not contain <serial>xxxx</serial> tag. (https://bugzilla.redhat.com/show_bug.cgi?id=593266) I wrote to community (users and developers). No one has added this information to the site... -- Segmentation fault
2015 May 30
2
snapshots and vmdk
...comes from a vmdk file? http://wiki.libvirt.org/page/Snapshots#Desired_functionality seems to say no, since it says "'virsh snapshot', which requires all disk images to be qcow2". OTOH, man virsh, http://libvirt.org/formatsnapshot.html, and http://libvirt.org/formatdomain.html#elementsDisks seem to indicate more flexibility, though I see nothing about vmdk. If there is support for vmdk, is it just for external snapshots, or do internal snapshots work? Currently running libvirt 0.9.12, qemu-kvm 1.1.2 (though I could use vmware workstation), linux kernel 3.2.0. Thanks. Ross Boylan
2017 Aug 02
2
Libvirt fails on network disk with ISCSI protocol
Hi, I am working on oVirt, and I am trying to run a VM with a network disk with ISCSI protocol ( the storage is on a Cinder server). Here is the disk XML I use: <disk device="disk" snapshot="no" type="network"> <address bus="0" controller="0" target="0" type="drive" unit="0" />
2020 May 28
2
Re: Provide NBD via Browser over Websockets
On Mon, 15 Oct 2018, Nir Soffer wrote: > On Sat, Oct 13, 2018 at 9:45 PM Eric Wheeler <nbd@lists.ewheeler.net> wrote: > Hello all, > > It might be neat to attach ISOs to KVM guests via websockets.  Basically > the  browser would be the NBD "server" and an NBD client would run on the > hypervisor, then use `virsh change-media vm1 hdc
2015 Jun 01
0
Re: snapshots and vmdk
...t; http://wiki.libvirt.org/page/Snapshots#Desired_functionality seems to > say no, since it says "'virsh snapshot', which requires all disk > images to be qcow2". > > OTOH, man virsh, http://libvirt.org/formatsnapshot.html, and > http://libvirt.org/formatdomain.html#elementsDisks seem to indicate > more flexibility, though I see nothing about vmdk. > > If there is support for vmdk, is it just for external snapshots, or do > internal snapshots work? >From my quick test (for offline disks with `qemu-img`), it does seem to work: $ qemu-img create -f vmdk...
2017 Aug 02
0
Re: Libvirt fails on network disk with ISCSI protocol
...t; >It seems that the ':' character got changed on the way to %3A. > >Any suggestions on the root cause of this issue? > The name seems to be missing the LUN. Even though our documentation states: If not specified, the default LUN is zero. http://libvirt.org/formatdomain.html#elementsDisks Maybe something changed in QEMU or libiscsi since that document was written? Jan -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 833 bytes Desc: Digital signature URL: <http://listman.redhat.com/archives/l...
2018 Aug 09
0
Re: Mount URL as cdrom/iso KVM/QEMU
ср, 8 авг. 2018 г. в 15:11, Inception Hosting <inbox@inceptionhosting.com>: > > Hi Folks, > > > According to the examples in http://libvirt.org/formatdomain.html#elementsDisks it should be possible to mount an iso /url as a cdrom, the example given is: > Usually such errors because url not available from host system. Can you try curl this host and address from node? -- Vasiliy Tolstov, e-mail: v.tolstov@selfip.ru
2019 Aug 14
2
Re: Libvirt API for attaching volume to domain
Thanks, this is exactly what I needed. Is there some documentation where I can get how to exactly call this function along with the arguments? On Wed, Aug 14, 2019 at 6:48 PM Peter Krempa <pkrempa@redhat.com> wrote: > On Wed, Aug 14, 2019 at 18:23:30 +0530, Varsha Verma wrote: > > Hi, > > > > I wanted to know if there is any Python API exposed for libvirt using
2010 Oct 26
1
List volumes of a domain
Hi all, I'm using libvirt java binding (libvirt-java-0.4.6) I'd like to know if the Domain class offers an API to query volumes attached to a particular domain or should I parse the XML domain description? Thanks for your support -- Andrea Turli Ricercatore Direzione Ricerca e Innovazione andrea.turli at eng.it Engineering Ingegneria Informatica spa Via Riccardo Morandi, 32 00148
2011 Apr 18
1
kvm virtual server boot order
The boot order issue http://osdir.com/ml/libvir-list/2009-08/msg00398.html resolved with the code changes specified by http://www.redhat.com/archives/libvir-list/2009-August/msg00340.html seems to suggest that hard disks, cdroms, floppy devices (since they are all disks) are ordered primarily by virtual bus type as encountered in the domain xml. This indicates that there can exist a
2012 Oct 29
1
libvirt and cgroups/blkio
Hi, is there a way to configure blkio via libvirt (xml)? Regards Erkan -- ?ber den grenzen mu? die freiheit wohl wolkenlos sein
2012 Nov 26
1
Block device IO limits
Hi all, is there a way to limit the throughput (or the number of operations per seconds) of a block device? I ask because I've a couple of misconfigured VMs that are performing a lot of disk activity (swapping I'd bet but I haven't access to their OS). Since their storage is on a NFS share they are slowing down other VMs on the same share. Thank you. Davide.
2013 Apr 23
0
Fwd: kvm
...o put these in > options in the libvirt xml file for a vm, libvirt appears to be > removing them. Please email libvirt-users at redhat.com for questions about libvirt in the future. This is a question about libvirt domain XML. The documentation is here: http://libvirt.org/formatdomain.html#elementsDisks The attribute is called "error_policy". The documentation says: The optional error_policy attribute controls how the hypervisor will behave on a disk read or write error, possible values are "stop", "report", "ignore", and "enospace".Since...
2013 Jun 07
0
Re: [ceph-users] Setting RBD cache parameters for libvirt+qemu
...onf by default as well, so you can put more specific settings in a [global] or [client.foo] section there. Note that if you enable writeback caching here, you need to include cache='writeback' in the xml as well, or qemu will not send flushes. Josh [1] http://libvirt.org/formatdomain.html#elementsDisks
2015 Jan 30
1
Disk space exhaustion
Hello, what happens when an instance writes data with 0% available physical disk space, on QCOW2 images for instance, apart from destruction and unpredictability? I'm aware that monitoring is mandatory in production environments, but are there other known industry tricks to deal with this? Soft/hard limit settings, autopause/stop, or does KVM react in doing force shut down the VM in
2014 Dec 18
1
Virtual machine removal through command line.
Hi, Until today, I hadn't found a way to cleanly remove a KVM virtual machine through command line on CentOS 6 or 7! I had to run 'systemctl restart libvirtd' or 'service libvirtd restart' After several months (!!!), I found this thread: https://github.com/pradels/vagrant-libvirt/issues/107 Now, I know how to cleanly remove a KVM virtual machine (with default file location):
2020 May 28
0
Re: Provide NBD via Browser over Websockets
...disks on the VM directly. eg: $ qemu-system-x86_64 -m 2048 -cdrom https://download.fedoraproject.org/pub/fedora/linux/releases/32/Server/x86_64/iso/Fedora-Server-dvd-x86_64-32-1.6.iso (A more realistic example would use libvirt, see the https protocol in: https://libvirt.org/formatdomain.html#elementsDisks ) You can also bounce the connection through nbdkit-curl-plugin which gives you a bit more flexibility, eg the ability to transparently uncompress the remote ISO. You would be using the NBD client in qemu to connect (eg. over a Unix domain socket) to a local nbdkit, and nbdkit's curl plugin...
2018 Aug 09
2
Re: Mount URL as cdrom/iso KVM/QEMU
...:07 To: Inception Hosting Cc: libvirt-users@redhat.com Subject: Re: [libvirt-users] Mount URL as cdrom/iso KVM/QEMU ср, 8 авг. 2018 г. в 15:11, Inception Hosting <inbox@inceptionhosting.com>: > > Hi Folks, > > > According to the examples in http://libvirt.org/formatdomain.html#elementsDisks it should be possible to mount an iso /url as a cdrom, the example given is: > Usually such errors because url not available from host system. Can you try curl this host and address from node? -- Vasiliy Tolstov, e-mail: v.tolstov@selfip.ru
2013 May 31
0
iSCSI-based Storage Pool and virsh attach-device problems/questions
...g to read from the backend configuration, and expecting to see a 'type' and 'params' to use for setting the aforementioned 'uname' value. This is where I hit the wall, so to speak. After reading through the XML documentation for libvirt (http://libvirt.org/formatdomain.html#elementsDisks), I see nothing that I can further add to my XML description that would make sense for adding a volume from a storage pool. For kicks and giggles, I've tried using the disk type 'carom', which gets me past the failing python condition, but then gives me the following error when trying...