similar to: Re: Windows Guest I/O performance issues (already using virtio) (Matt Schumacher)

List, I have a number of Windows 2016 servers I am deploying, but I’m having some I/O performance issues. I have done all of the obvious things like virtio drivers, but am finding there is more performance to be found with hyper-v extensions, how we virtualize the hardware clock, and iothreads. I’m using ZVOLs to back the VM, and I’m using 4k block sizes, which seems to offer the best 4k random

On Mon, Sep 14, 2020 at 8:42 AM Yedidyah Bar David <didi@redhat.com> wrote: > > On Mon, Sep 14, 2020 at 12:28 AM wodel youchi <wodel.youchi@gmail.com> wrote: > > > > Hi, > > > > Thanks for the help, I think I found the solution using this link : https://www.berrange.com/posts/2018/06/29/cpu-model-configuration-for-qemu-kvm-on-x86-hosts/ > > > >

Hallo, I have one ups with snmp and any ups without snmp. Shutdown works while network online. But some batteries are empty, so that the communication break early. Howto force shutdown if nut-snmp Communications lost? My 1. suggestion was option DEADTIME, but seem to be information only. (s. below) Any suggestions? The last way would be a ugly cronjob (like: ping || shutdown). regards Heiko

Hi, I'm using qemu+ssh://username at hostname/system as the remote URI. Libvirt seems to be communicating fine until some 2 minutes (we poll every 5 seconds) and then it throws up RPC error and many counters are wrong. But if I collect on localhost the counters seems to be coming fine. Test and testvm are guests on the local machine where as Win8 and Ubuntu* are remote URI's connected

Hello list. I’m using samba4 authorization with debian 8 without any problems. But in debian 9 very same config causes problems - unable to change GID. Here is my smb.conf: [global] netbios name = testvm security = ADS workgroup = WRKGRP realm = EXAMPLE.COM password server = 172.24.0.253 wins server = 172.24.0.253 wins proxy = no

Background: ---------- I'm trying to debug a two-node pacemaker/corosync cluster where I want to be able to do live migration of KVM/qemu VMs. Storage is backed via dual-primary DRBD (yes, fencing is in place). When moving the VM between nodes via 'pcs resource move RES NODENAME', the live migration fails although pacemaker will shut down the VM and restart it on the other node.

Hello, After searching the archives, I''ve found only two messages regarding this case, but there were no solution. I have a similar problem, so I try to ask here. I have twi HFC chipset ISDN cards in my pc: 0000:00:0d.0 Network controller: Cologne Chip Designs GmbH ISDN network controller [HFC-PCI] (rev 02) Subsystem: Cologne Chip Designs GmbH ISDN Board Flags: bus

On Wed, Nov 04, 2020 at 05:48:40PM +0200, Nir Soffer wrote: > The docs[1] say: > > - The optional iothread attribute assigns the disk to an IOThread as defined by > the range for the domain iothreads value. Multiple disks may be assigned to > the same IOThread and are numbered from 1 to the domain iothreads value. > Available for a disk device target configured to use

i'm having difficulty running KVM virtual machines off of a glusterFS volume mounted using the glusterFS client. i am running centOS 6, 64-bit. i am using virt-install to create my images but encountering the following error: qemu: could not open disk image /mnt/myreplicatestvolume/testvm.img: Invalid argument (see below for a more lengthy version of the error) i have found an example of

Hi, Seems that such migration is currently broken, at least for 0.9.11|0.9.12, with 0.9.8 all works fine: virsh migrate --live testvm qemu+tcp://towerbig/system ---snip--- 2012-05-17 21:22:30.250+0000: 16926: debug : qemuDriverCloseCallbackGet:605 : vm=testvm, uuid=feb7ccb6-1087-8661-9284-62e3a1e9f44a, conn=(nil) 2012-05-17 21:22:30.250+0000: 16926: debug : qemuDriverCloseCallbackGet:611 :

On 04/28/2015 06:03 PM, Matthew Schumacher wrote: > > On 04/22/2015 08:19 AM, Laine Stump wrote: >> If you're compiling yourself, then you should be all set to run under >> gdb. libvirt-debuginfo is just a separate subpackage that contains all >> the symbol and line number info from the build so that backtraces in >> gdb make sense. Try attaching gdb to the

On Sat, Sep 26, 2015 at 7:04 PM, Pasi K?rkk?inen <pasik at iki.fi> wrote: > Hello, > > I just upgraded some of my el6xen boxes to latest CentOS 6.7, Xen 4.4.3 and dom0 3.18.17 rpms, and noticed these new problems: > > > 1) virt-manager fails to start with an error: "D-Bus library appears to be incorrectly set up; failed to read machine uuid: Failed to open

which is a stripe of the gluster storage servers, this is the performance I get (note use a file size > amount of RAM on client and server systems, 13GB in this case) : 4k block size : 111 pir4:/pirstripe% /sb/admin/scripts/nfsSpeedTest -s 13g -y pir4: Write test (dd): 142.281 MB/s 1138.247 mbps 93.561 seconds pir4: Read test (dd): 274.321 MB/s 2194.570 mbps 48.527 seconds testing from 8k -

Hi, I've got this strange problem where a striped endpoint will crash when I try to use cp to copy files off of it but not when I use rsync to copy files off: [user at gluster5 user]$ cp -r Python-2.6.4/ ~/tmp/ cp: reading `Python-2.6.4/Lib/lib2to3/tests/data/fixers/myfixes/__init__.py': Software caused connection abort cp: closing

The docs[1] say: - The optional iothread attribute assigns the disk to an IOThread as defined by the range for the domain iothreads value. Multiple disks may be assigned to the same IOThread and are numbered from 1 to the domain iothreads value. Available for a disk device target configured to use "virtio" bus and "pci" or "ccw" address types. Since 1.2.8

Hello, I just upgraded some of my el6xen boxes to latest CentOS 6.7, Xen 4.4.3 and dom0 3.18.17 rpms, and noticed these new problems: 1) virt-manager fails to start with an error: "D-Bus library appears to be incorrectly set up; failed to read machine uuid: Failed to open "/var/lib/dbus/machine-id": No such file or directory" And indeed.. there was no such file. Running

On Wed, Nov 04, 2020 at 05:48:40PM +0200, Nir Soffer wrote: > The docs[1] say: > > - The optional iothread attribute assigns the disk to an IOThread as defined by > the range for the domain iothreads value. Multiple disks may be assigned to > the same IOThread and are numbered from 1 to the domain iothreads value. > Available for a disk device target configured to use

Hello, so the current domain configuration: <cpu mode='host-passthrough'><topology sockets='8' cores='4' threads='1'/><numa><cell cpus='0-3' memory='62000000' /><cell cpus='4-7' memory='62000000' /><cell cpus='8-11' memory='62000000' /><cell cpus='12-15'

On Thu, Jan 17, 2019 at 4:35 PM Cole Robinson <crobinso@redhat.com> wrote: > > On 01/17/2019 05:58 AM, Igor Gnatenko wrote: > > Hello, > > > > is there any way of specifying iothreads via virt-install command? > > > > I've tried appending ",iothread='1'" but that didn't work. > > > > Thanks in advance! > > >

HI I have installed puppet on a RHEL 6.x machine. When I try to start the puppet master service, it fails and when I check status it says - "puppet dead but subsys locked". [root@testvm init.d]# service puppet status puppet (pid 13304) is running... [root@testvm init.d]# service puppetmaster status puppet dead but subsys locked [root@testvm init.d]# I can see that this error