Hello,
I am attempting to enable discard support on the virtio-blk device on a QEMU VM
however it isn't working. My understanding is that this is enabled in QEMU >=
4.0, so I am not sure why this isn't working:
Host OS: Ubuntu 20.04 (kernel 5.4.0)
Guest OS: Ubuntu 18.04 (kernel 4.15.0)
Guest con
- Original Message -
> From: "Eric Blake"
> To: "Andrew Martin"
> Cc: libvirt-users@redhat.com
> Sent: Friday, July 22, 2016 10:40:54 PM
> Subject: Re: [libvirt-users] Blockpull behavior when interrupted
>
> On 07/22/2016 11:30 AM, Andrew Mar
- Original Message -
> From: "Eric Blake"
> To: "Andrew Martin"
> Cc: libvirt-users@redhat.com
> Sent: Friday, July 22, 2016 10:40:54 PM
> Subject: Re: [libvirt-users] Blockpull behavior when interrupted
>
> On 07/22/2016 11:30 AM, Andrew Mar
- Original Message -
> From: "Eric Blake"
> To: "Andrew Martin" , libvirt-users@redhat.com
> Sent: Thursday, July 21, 2016 5:40:07 PM
> Subject: Re: [libvirt-users] Blockpull behavior when interrupted
>
> On 07/21/2016 03:05 PM, Andrew Martin wro
Hello,
I use snapshot-create-as followed by blockpull when creating external snapshots
of VMs. This works well, however I am curious about the behavior of blockpull
after an unexpected shutdown (or SIGKILL). If a blockpull is in progress and an
unexpected power loss occurs, will the VM continue to
- Original Message -
> From: "Eric Blake"
> To: "Andrew Martin" , libvirt-users@redhat.com
> Sent: Tuesday, April 14, 2015 10:26:50 AM
> Subject: Re: [libvirt-users] Update on-disk XML after virsh snapshot-create-as
>
> On 04/14/2015 09:17 AM, Andr
u/.xml
Is it safe for me to overwrite the contents of /etc/libvirt/qemu/.xml
manually while the VM is running?
Thanks,
Andrew Martin
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- Original Message -
> From: "Kashyap Chamarthy"
>
> Looking at `qemu-img` source[1], 'cache=writeback' seems to be the
> default. That's also corroborated by this[2] (Rich's blog, and
> libguestfs/virt-tools lead developer).
>
>
> [1]
>
> http://git.qemu.org/?p=qemu.git;a=blob;f=q
that "Write barriers
enforce proper on-disk ordering of journal commits, making volatile disk write
caches safe to use, at some performance penalty". Does this apply to qcow2 VM
images?
Thanks,
Andrew Martin
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lib
- Original Message -
> From: "Eric Blake"
> To: "Andrew Martin" , libvirt-users@redhat.com
> Sent: Friday, August 1, 2014 4:40:28 PM
> Subject: Re: [libvirt-users] Live blockcopy onto storage pool that is an NFS
> mount?
>
> >
> > Howev
Hello,
I am running qemu-kvm 1.4.0 and libvirt 1.0.2 on Ubuntu 12.04. I have two NFS
mountpoints configured as two separate pools in virsh:
nfs1
419d799c-2493-6ebc-6848-53b0919e7bad
6836057014272
0
6836057014272
/var/lib/libvirt/images/nfs1
0711
0
0
- Original Message -
> From: "Eric Blake"
> To: "Andrew Martin"
> Cc: libvirt-users@redhat.com
> Sent: Friday, May 23, 2014 7:30:44 PM
> Subject: Re: [libvirt-users] Live snapshots of a single block device
>
> On 05/23/2014 12:16 PM, Andrew Mar
> >> --live only makes sense when mixed with memory snapshots (with --memspec);
> >> but
> >> as you are doing a --disk-only snapshot, it doesn't help (I'm not sure if
> >> it
> >> will error out as mutually exclusive or just be silently ignored,
> >> without reading the code).
> > I'm using this c
- Original Message -
> From: "Eric Blake" To: "Andrew Martin"
> , libvirt-users@redhat.com Sent: Thursday, May 22, 2014
> 5:44:54 PM Subject: Re: [libvirt-users] Live snapshots of a single block
> device
>
> On 05/22/2014 04:31 PM, Andrew Martin wrote
te an external
snapshot for a specific block device only (not all block devices)?
Also, while looking at the manpage, does the --live option do anything
different if used with the above command?
Thanks,
Andrew Martin
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li
- Original Message -
> From: "Eric Blake"
> To: "Andrew Martin"
> Cc: "Gergely Horváth" , libvirt-users@redhat.com
> Sent: Thursday, February 6, 2014 2:35:35 PM
> Subject: Re: [libvirt-users] Can I move the disk image of the guest while
- Original Message -
> From: "Eric Blake"
> To: "Andrew Martin"
> Cc: "Gergely Horváth" , libvirt-users@redhat.com
> Sent: Thursday, February 6, 2014 9:31:29 AM
> Subject: Re: [libvirt-users] Can I move the disk image of the guest while
- Original Message -
> From: "Eric Blake"
> To: "Gergely Horváth" , libvirt-users@redhat.com
> Sent: Wednesday, February 5, 2014 4:47:47 PM
> Subject: Re: [libvirt-users] Can I move the disk image of the guest while it
> is running?
>
> On 02/05/2014 02:54 PM, Gergely Horváth wrote:
>
- Original Message -
> From: "Laine Stump"
> To: libvirt-users@redhat.com
> Cc: "Andrew Martin"
> Sent: Tuesday, January 14, 2014 3:54:51 AM
> Subject: Re: [libvirt-users] Fake Network Interface
>
> On 12/30/2013 11:25 AM, Andrew Martin w
fake
Once done, you can add this block of XML to your VM config with "virsh edit
":
Note that you should adjust the "slot" and "mac" arguments to avoid conflicts.
Thanks,
Andrew
- Original Message -
> From: &qu
Hello,
Is there a supported method for creating a fake network interface in a VM's
configuration file? I was using the below construct, however it is no longer
working for me in recent versions of libvirt (libvirt 1.0.2 with qemu-kvm
1.4.0). Is there a different, preferred method for creating a
- Original Message -
> From: "Eric Blake"
> To: "Andrew Martin"
> Cc: libvirt-users@redhat.com
> Sent: Friday, February 1, 2013 3:23:03 PM
> Subject: Re: [libvirt-users] Managing Live Snapshots with Libvirt 1.0.1
>
> On 02/01/2013 11:12 AM, An
Hi Eric,
- Original Message -
> From: "Eric Blake" To: "Andrew Martin"
> Cc: libvirt-users@redhat.com Sent: Thursday,
> January 31, 2013 6:25:42 PM Subject: Re: [libvirt-users] Managing Live
> Snapshots with Libvirt 1.0.1
>
> On 01/31/2013 04:0
Hello,
I recently compiled libvirt 1.0.1 and qemu 1.3.0 on Ubuntu 12.04. I have
performed live snapshots on VMs using "virsh snapshot-create-as" and then later
re-merge the images together using "virsh blockpull". I am wondering how I can
do a couple of other operations on the images while the
gt;
> Andrew we use libvirt 1.0.0 on 12.04 Ubuntu. I assume it came from
> libvirt.
>
> John
>
> On 12/14/2012 07:08 AM, Andrew Martin wrote:
>
>
> Is anyone maintaining newer binary builds for Ubuntu? --
> John Fisher
> __
Hello,
I am running Libvirt 0.9.8 and QEMU 1.0 on Ubuntu 12.04 LTS on several virtual
machine servers and would like to take advantage of some of the snapshotting
functionality available in newer versions of QEMU and Libvirt:
https://www.redhat.com/archives/libvirt-users/2012-August/msg00086.htm
rom: "Eric Blake"
To: "Andrew Martin"
Cc: libvirt-users@redhat.com
Sent: Friday, August 17, 2012 9:43:23 AM
Subject: Re: [libvirt-users] Live Snapshot and Rebasing using blockpull
On 08/17/2012 08:27 AM, Andrew Martin wrote:
>
> 1. virsh snapshot-create-as to cre
Hello,
I am looking for a solution for live backups of running KVM hosts. I recently
read this article which highlights the following method:
http://www.linux-kvm.com/content/first-look-virtual-machine-online-disk-snapshots-coming-fedora-18
1. virsh snapshot-create-as to create the snapsh
pci_add_option_rom: failed to find romfile "pxe-virtio.bin"
qcow2_free_clusters failed: Invalid argument
These systems are running the stock Ubuntu 10.04 version of qemu-common,
qemu-kvm, and kvm (0.12.3+noroms-0ubuntu9.19).
Thanks,
Andrew
- Original Message -
From: &quo
ovide to diagnose why
these images are getting corrupted and taking these running VMs offline?
Thanks,
Andrew Martin
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to start SASL negotiation: -4 (SASL(-4):
no mechanism available: )
error: failed to connect to the hypervisor
Do you know what is incorrect in my libvirt config, or is it not possible to
authenticate libvirt via SASL+LDAP? If not, is there somewhere that documents
all of the supported
Hi Patrick,
Yes, this is a production server.
Thanks,
Andrew
- Original Message -
From: "Patrick Wilbur"
To: "Andrew Martin"
Cc: libvirt-users@redhat.com
Sent: Saturday, May 26, 2012 9:27:20 AM
Subject: Re: [libvirt-users] Virtual Machines Stay Off If Re
?
Thanks!
Andrew
- Original Message -
From: "Patrick Wilbur"
To: "Andrew Martin"
Cc: libvirt-users@redhat.com
Sent: Friday, May 25, 2012 4:15:34 PM
Subject: Re: [libvirt-users] Virtual Machines Stay Off If Rebooted
Hey Andrew,
Could you run the following?
#v
Hello,
I am using libvirt on Ubuntu 10.04 Server and the following versions of these
packages:
libvirt-bin, libvirt0, python-libvirt - 0.7.5-5ubuntu27.22
qemu-kvm 0.12.3+noroms-0ubuntu9.18
Recently, when restarting a VM (either by issuing "sudo reboot" on a Linux
guest or choosing "Restar
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