similar to: New install of Xen 4.1, very poor I/O performance

Hi, Could someone using NFS tell of how their setup is? And what are the NFS mount point options? Thanks in advance. -- Jude Pereira judepereira@7terminals.com _______________________________________________ Xen-users mailing list Xen-users@lists.xen.org http://lists.xen.org/xen-users

Hello, I just installed Xen 4.0.1 on Ubuntu 10.04 dom0. After this i had Ubuntu 11.04 as Para domU. I tried to attach file based disk to the this domU. My command is: # xm block-attach Ubuntu-11 file:/root/ubunut-natty/Extra /dev/xvdb w there is no error on this. But inside the DomU i cannot see any disk xvdb. xend.log shows : [2011-10-25 16:27:32 14794] DEBUG

Hi, samba 3.0.24, debian etch I'm seeing a strange effect with samba and traffic over a bond0 interface in round robin mode. 2 server each with 2 GbE interfaces as bond0 device ind rr mode. netio benchmark: NETIO - Network Throughput Benchmark, Version 1.26 (C) 1997-2005 Kai Uwe Rommel TCP connection established. Packet size 1k bytes: 182840 KByte/s Tx, 197599 KByte/s Rx. Packet size

I am trying to have a driver domain control a block device (a disk image file within the domain, or a physical disk attached to the domain) - I have managed to get the intended frontend device node to appear in the frontend domain, but any attempts to access it (such as through fdisk to partition it) result in I/O errors being printed to dmesg on both the frontend and backend domains. The

Hi. I'm testing a centos 5.4 xen PV guest on top of a centos 5.4 host. for some reason, the disk performance from the guest is awful. when I do an import , the io is fine for a while then climbs to 100% and stays there most of the time. at first I tougth it was because I was using file-backed disks, so deleted those and changed to LVM, but the situation did't improve. Here's an

I recently upgraded a part of my network to Gigabit ethernet, basically between my Linux machine and my main windows machine, is now gigabit. The problem is that, and the whole reason I went with it, is to get faster speeds with samba. I've only been able to get 13.4 MB/s as a maximum transfer speed. I don't expect to be able to get 125 MB/s. If I use HTTP I can get around 18 MB/s,

Am 2015-09-17 09:29, schrieb Pasi K?rkk?inen: > > Are you using nfs over UDP or TCP ? > TCP, but Network cant be the bottleneck, have tested it with iperf between bare metal/domU's and the nfs domU and it was perfectly fast... > > I don't think. > > > If you used NFS over UDP, try running it over TCP. no I use it over TCP... > > What does

There are a number of flaws in the blktap userspace daemon when dealing with I/O errors. - The backends which use AIO check the io_events.res member to determine if an I/O error occurred. Which is good. But when calling the callback to signal completion of the I/O, they pass the io_events.res2 member Now this seems fine at first glance[1] "res is the usual result of an I/O

Hello I have a 3 node experiment as detailed below to estimate the bridged networking performance in para-virtualized Xen 3.0 on Emulab (https://www.emulab.net/) Here is how the 3-node topology looks (This topology is specified by means of an NS-2 file) topology: _______________________________ | | Node0:eth0 ------|Node1:eth0

Guess you went through user lists and tried something like this already http://lists.gluster.org/pipermail/gluster-users/2018-April/033811.html I have a same exact setup and below is as far as it went after months of trail and error. We all have somewhat same setup and same issue with this - you can find same post as yours on the daily basis. On Wed, Apr 11, 2018 at 3:03 PM, Anastasia Belyaeva

CentOS 6.2......... Why do the physical interfaces report (correctly) that they're negotiated at 1000Mb/s, but when I `cat /proc/net/bonding/bond0` I get 100Mbps for the member interfaces, and when I ` mii-tool bond0` I get 10Mbps for the bond? ----------------------------------------------------------------------------------------- ethtool em1 Settings for em1: Supported ports: [

Thanks a lot for your reply! You guessed it right though - mailing lists, various blogs, documentation, videos and even source code at this point. Changing some off the options does make performance slightly better, but nothing particularly groundbreaking. So, if I understand you correctly, no one has yet managed to get acceptable performance (relative to underlying hardware capabilities) with

I tried to use cdrom in domU linux pv (Linux Mint 11 based on Natty). With ''/mnt/vm/iso/test.iso,raw,xvdb,ro,cdrom'', Mint sees it as internal disk (not cdrom) and only administrators can mount it. I tried also ''/dev/scd0,raw,xvdb,ro,cdrom'' does the same thing. Is possible use cdrom on linux domU pv full working where also normal user can mount it without

For those wanting to know how to mount filesystems through blktap2 here is how you do it, as I couldn''t find it fully documented. The instructions on the blktap2 readme file are rather out of date. You can mount them under Dom0 like so. e.g. to mount a vhd file, sudo xm block-attach 0 tap2:vhd:/home/xen/xenwin7-persist.vhd xvdb w 0 Now the device should appear under /dev ls

Hello everybody! I have 3 gluster servers (*gluster 3.12.6, Centos 7.2*; those are actually virtual machines located on 3 separate physical XenServer7.1 servers) They are all connected via infiniband network. Iperf3 shows around *23 Gbit/s network bandwidth *between each 2 of them. Each server has 3 HDD put into a *stripe*3 thin pool (LVM2) *with logical volume created on top of it, formatted

Hi, I have a Xen server running OpenSuSE 10.2, with Xen version 3.0.3_11774. It''s happily hosting two DomU''s running the same OS / kernel. Now I tried to create a new DomU running a newer OS - OpenSuSE 11.1. It comes with Xen version 3.3.1_18494_03. Unfortunately for me, it doesn''t work - this is what I get: > xen1:/etc/xen/vm # xm create NEW > Using config file

Hello, CentOS 5.0 on x86_64 I'm trying to set up Xen paravirt guests with access to 2 block devices: One for / and one for swap. The block devices are LVM LVs, but that shouldn't matter. When I create the guest using either virt-manager or virt-install, I get asked which device to use for xvda. But I want more block devices: xvdb for swap. I know how to add this as an option to the

Hi, I''ve been touring XCP and making my way around it for the last few days, and am having problems with some reasonably straightforward actions. I''ve poured a several hours into different ways of resolving the issue, but am coming up short. Here''s the main issue. The following command (plugging in a VBD to the dom0 VM), when, run, hangs for several minutes, and then

BODY { font-family:Arial, Helvetica, sans-serif;font-size:12px; } Dear All, I am trying to use the virt-manager to install Xen Guest OS. I got the virt-manager installed and running on fc7 xen dom0 and am trying to install fc9 domU using virt-manager. I have only been able to find the install URL for fc9 (all other links fc6, fc7 etc does not work), but this URL doesnot complete the

Sorry for these multiple postings. I solved the problem using na.omit() to drop records with missing values for the time being. I will worry about imputation, etc. later. I calculated the sum of squared errors for 3 models, linear regression, neural networks, and support vector machines. This is the first run. Without doing any parameter tuning on the SVM or playing around with the number of