similar to: lvm over nbd?

Hi People I just updated a CentOS 5.2 Server that is a Guest inside VMware ESX 3.50 Server using "yum update". As far as I can tell the only three packages were updated Jul 24 16:37:49 Updated: php-common - 5.1.6-20.el5_2.1.i386 Jul 24 16:37:50 Updated: php-cli - 5.1.6-20.el5_2.1.i386 Jul 24 16:37:50 Updated: php - 5.1.6-20.el5_2.1.i386 But when I rebooted the Server one of my

I have a couple of Xen 3.1 servers running on Ubuntu 7.10 AMD64 Server machines. I decided to to upgrade these machines up to the latest release of Ubuntu (8.04 LTS) which upgrades Xen to version 3.2. I upgraded the first machine, installed the xen component. these machines all have two network interfaces one connected to the WAN and the other to the local LAN network. In a tutorial i read a

Hi, So I've been hacking together an nbdkit plugin (similar to the "file" plugin, but it splits the file up into chunks): https://github.com/pepaslabs/nbdkit-chunks-plugin I got it to the point of being a working prototype. Then I threw it onto a raspberry pi, which it turns out only has a 50/50 shot of fallocate() working correctly. I'm checking the return code of

Guys, I have setup my hard disc with 3 partitions: 1- 256MB on /boot; 2- 2GB on / for my dom0 (Debian 5.0) (eth0 default bridge for guests LAN); 3- 498GB exported with vblade-persist to my network (eth1 for the AoE protocol). On dom0 hypervisor01: vblade-persist setup 0 0 eth1 /dev/sda3 vblade-persist start all How to create a CVLM VG with /dev/etherd/e0.0 on each of my dom0s? Including the

I am thinking about setting up an asterisk PBX system for my company. But since I can't be at all the locations all the time I am setting up an automatic backup system where if the backup detects that the primay is down it takes over the IP so calls can be made once more. For this reason I want to setup a seperate HARDWARE PSTN Gateway. Are there any equiptment that can be plugged into

Hi, I get this error when i try to start clvm (debian lenny) : This is a clvm version with openais # /etc/init.d/clvm restart Deactivating VG ::. Stopping Cluster LVM Daemon: clvm. Starting Cluster LVM Daemon: clvmCLVMD[86475770]: Mar 8 11:25:27 CLVMD started CLVMD[86475770]: Mar 8 11:25:27 Our local node id is -1062730132 CLVMD[86475770]: Mar 8 11:25:27 Add_internal_client, fd = 7

Hi, i am setting up a cluster of kvm hypervisors managed with libvirt. The storage pool is on iscsi with clvm. To prevent that a vm is started on more than one hypervisor, I want to use a lockmanager with libvirt. I could only find sanlock as lockmanager, but AFSIK sanlock will not work in my setup as I don't have a shared filesystem. I have dlm running for clvm. Are there lockmanager

2017-07-27 20:18 GMT+08:00 Richard W.M. Jones <rjones@redhat.com>: > On Thu, Jul 27, 2017 at 06:34:13PM +0800, lampahome wrote: > > I can mount qcow2 img to nbd devices through guestfish or qemu-nbd > > > > I'm curious about which performance is better? > > They do quite different things, they're not comparable. > > Can you specifically give the

Hi, I'm needing to expand a LUN on my EMC CX4-120 SAN. (Well I already had done it). On this LUN I had a PV of a cLVM VG. Know I need to run pvresize on it. Has anybody done this on a cLVM PV ? I'm trying to rescan the devices, but I can't "see" the new size. And, googling on it I can only find RHEL5.2 responses. Thanks in advance,

I'm desparately looking for more ideas on how to debug what's going on with our CLVM cluster. Background: 4 node "cluster"-- machines are Dell blades with Dell M6220/M6348 switches. Sole purpose of Cluster Suite tools is to use CLVM against an iSCSI storage array. Machines are running CentOS 5.8 with the Xen kernels. These blades host various VMs for a project. The iSCSI

Hi All, I am unable to figure out the issue here, when I try to create a filesystem (ext4) on a virtual disk using qemu-nbd. This happens intermittently. Following is the sequence of commands:- $> qemu-img create -f qcow2 test.qcow2 30G $> qemu-nbd --connect=/dev/nbd0 test.qcow2 $> *mkfs.ext4 /dev/nbd0* * mkfs.ext4: Device size reported to be zero. Invalid partition specified, or*

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

Hello all. I would like to canvas some opinions on options for shared storage in a Xen cluster. So far I've experimented with using iSCSI and clvm which mixed success. The primary concern I have with both of these options is that there seems to be no obvious way to ensure exclusive access to the LUN/device to the VM I want to run. On a couple of occasions during my playing I've

Hi all, We are running CentOS 5.2 64bit as our file server. Currently, we used GFS (with CLVM underneath it) as our filesystem (for our multiple 2TB SAN volume exports) since we plan to add more file servers (serving the same contents) later on. The issue we are facing at the moment is we found out that command such as 'ls' gives a very slow response.(e.g 3-4minutes for the outputs of ls

2017-07-28 0:31 GMT+08:00 Richard W.M. Jones <rjones@redhat.com>: > On Fri, Jul 28, 2017 at 12:23:04AM +0800, lampahome wrote: > > 2017-07-27 20:18 GMT+08:00 Richard W.M. Jones <rjones@redhat.com>: > > > > > On Thu, Jul 27, 2017 at 06:34:13PM +0800, lampahome wrote: > > > > I can mount qcow2 img to nbd devices through guestfish or qemu-nbd > >

Hi, I am trying to build a rock solid XEN High availability cluster. The platform is SLES 11 SP1 running on 2 HP DL585 both connected through HBA fiber channel to the SAN (HP EVA). XEN is running smoothly and I''m even amazed with the live migration performances (this is the first time I have the chance to try it in such a nice environment). XEN apart the SLES heartbeat cluster is

when performing a live migration i know the contents of the ram is copied over two the new xen server, but how about the contents of the swap partition. currently I have the swap partition in a seperate loopback file from the root partition. if i want to do a live migration, do i have to give the new server access to the swap partition file along with the root partition file? of can i just

Hi. I''m using Xen on RHEL cluster, and I have strange problems. I gave raw volumes from storage to Xen virtual machines. With windows, I have a problem that nodes don''t see the volume as same one.... for example: clusternode1# clusvcadm -d vm:winxp clusternode1# dd if=/dev/mapper/winxp of=/node1winxp clusternode2# dd if=/dev/mapper/winxp of=/node2winxp clusternode3# dd

Hello list I've installed cluster suite with 8 physical nodes, these are connected to a SAN using CLVM and AOE protocol. The cluster suite runs on the physical nodes/servers, in dom0. If I have to use GFS, where do I install this? What is the right approach to using GFS with Xen. I see 2 options: 1. I install GFS inside each domU (unprivileged domain, the actual VM). 2. I install GFS on

Hi, I''m curious about how you guys deal with big virtualization installations. To this date we only dealt with a small number of VM''s (~10)on not too big hardware (2xquad xeons+16GB ram). As I''m the "storage guy" I find it quite convenient to present to the dom0s one LUN per VM that makes live migration possible but without the cluster file system or cLVM