similar to: drbd 8 primary/primary and xen migration on RHEL 5

Hello Everyone, I recently had a question that got no responses about GFS+DRBD clusters for Xen VM storage, but after some consideration (and a lot of Googling) I have a couple of new questions. Basically what we have here are two servers that will each have a RAID-5 array filled up with 5 x 320GB SATA drives, I want to have these as useable file systems on both servers (as they will both be

Hello everyone, I just wanted to see if anyone has experience running Xen on: Dell 2950 III 2 x Quad 2.0 Ghz 1333Mhz FSB 32 GB DDR2 (8x4GB) 2 Disk Perc RAID 1 (7200 RPM SAS) Broadcom Dual Gigabit Ethernet LOM & TOE The requirements of each VM are not that high (and are all identical). I just want to run remote desktop and 1 other application at any given time (either a web based IE

Hello everybody, I am in the process of setting up a really cool xen serverfarm. Backend storage will be an LVMed AoE-device on top of DRBD. The goal is to have the backend storage completely redundant. Picture: |RAID| |RAID| |DRBD1| <----> |DRBD2| \ / |VMAC| | AoE | |global LVM VG| / | \ |Dom0a| |Dom0b| |Dom0c| | |

Hi Everyone, I''m trying to get Xen to use a native DRBD device but it seems it will not create the virtual machine. It does not seem to like the DRBD device type, any ideas on what might be wrong? I''m pretty sure my xen config file is OK and the DRBD device looks fine too. Full details below. xm create centostest Using config file "./centostest".

Hello, What is for you the best GlusterFS scenario in using XenServer (i'm not talking about Xen on a linux but XenServer baremetal) for a web farm (Apache-Tomcat) ? I were thinking of using ZFS as the filesystem for the different nodes. The objectives/needs : * A storage cluster with the capacity equal to at least 1 node(assuming all nodes are the same). * being able to lose/take down any

Hello, I have a small Xen farm of 8 dom0 servers with 64 virtual machines running para-virtualized and this has been working great. Unfortunately, I''ve hit a limit: my iSCSI hardware supports only 512 concurrent connections and so I''m pretty much at the limit. (Wish I would have seen that problem sooner!) Of course, 87% of those connections are idle-- but necessary because I

Hi all, could somebody point me to what is considered a sound way to offer Xen guests on a two node DRBD cluster in combination with Pacemaker? I prefer block devices over images for the DomU''s. I understand that for live migration DRBD 8.3 is needed, but I''m not sure as to what kind of resource agents/technologies are advised (LVM,cLVM, ...) and what kind of DRBD config

Hi, I have a Dell PowerEdge 1950 with two NICs Broadcom NetXtreme II BCM5708 1000Base-T. I installed CentOS 5.1 and Xen 3.0.3 (RPM). One of my virtual machines has Windows 2003 Server. In this virtual machine my NICs appears like "Realtek RTL8139 Family PCI Fast Ethernet NIC". The problem is that when I ping to other machines sometimes the reply time value is very high: C:>

Hi all, we have followed the very good HOWTO by http://wherethebitsroam.com/blogs/jeffw/drbd-xcp-05 and set up DRBD on XCP 1.1 in primary/primary mode. It works fine, but I am wondering how to squeeze more performance out of the system (we currently use a crossover GB Ethernet connection). When writing a 1 GB file on a guest I get write performance of about 5MB/s (idle). We have disabled all

Dear all, I have sent this problem earlier but maybe its not detail, here I try to write more detail. I hope anybody can help me to point out the problem. First of all I used Ubuntu 12.04 x64 both for domain0 and domainU with modification to run under xen hypervisor and work with remus. I follow and configured the remus with this notes

Supermicro X7DWN+, XEON 5410, Centos 5.2, Xen 3.2.1 At what looks like random times network traffic over xen bridge stops working, the only way I found to fix it is a reboot. This sometimes takes 10 min, other times it may be up for 10 days. This happened with default xen that comes with RedHat EL 5.2 as well as a default install of Fedora 8. Any ideas? ><> Nathan Stratton

Hello. I'm having issues using ocfs2 and drbd in dual primary mode. After running some filesystem test's that create a lot of small files I run really fast into "No space left on device" The non failing node is able to write/read from the filesystem. And the failing node is also able to delete/read from the filesystem Ubuntu custom kernel 2.6.27.2 o2cb_ctl version 1.3.9 drbd

Hi all, In threads posted by I believe Jonathan Tripley I promised to post my new XEN HA setup. Hope it can be of some use to some people. In this particular case I''m forced to use SLES 10SP3 with XEN 3.2, which excludes the possibility of using things like cLVM (which I don''t think I need anyway). So: Storage: I use two HP ML370 G5 machines with DRBD and heartbeat on

Hello folks, I am running Xen 2.6 under Centos 5.2 installation, and am trying to port Xen migration abilities to Infiniband. But, the InfiniBand drivers do not work under Xen kernel, only under non-Xen kernels. It looks like I need to install some patches to rectify the situation. Has anyone ever worked with Infiniband and Xen and would be able to give me inputs about the same? I would really

I have 6 boxes with a client config (see below) across 6 boxes. I am using distribute across 3 replicate pairs. Since I am running xen I need to disable-direct-io and that slows things down quite a bit. My thought was to move the replicate / distribute to the backend server config so that self heal can happen on faster backend rather then frontend client with disable-direct-io. Does this

Hello, On a xenserver with several (39) domUs, we experience problems with the system clock of the domUs. The clock seems to drift away several seconds up to two minutes from the dom0 clock. We do have set independent_wallclock=0. According to the docs (i.e. http://wiki.xensource.com/xenwiki/InstallationNotes) that way domUs should use the dom0 clock, but apparently that''s not the case.

Lets say you had 4 servers and you wanted to setup replicate and distribute. What methoid would be better: server sdb1 xen0 brick0 xen1 mirror0 xen2 brick1 xen3 mirror1 replicate block0 - brick0 mirror0 replicate block1 - brick1 mirror1 distribute unify - block0 block1 or server sdb1 sdb2 xen0 brick0 mirror3 xen1 brick1 mirror0 xen2 brick2 mirror1 xen3 brick3 mirror2 replicate block0 -

Hi ! Not very blocking because the smp module loads perfectly. # yum --exclude=kmod-drbd*\plus\* install kmod-drbd Setting up Install Process Setting up repositories Reading repository metadata in from local files Excluding Packages in global exclude list Finished Reducing CentOS-4 - Plus to included packages only Finished Parsing package install arguments Resolving Dependencies -->

hi xen user/dev list, i want to compile drbd 8.4 against kernel mainline 3.0 source and receive an error: my commands: # cd /usr/src/drbd-8.4.0 # ./autogen.sh # ./configure --localstatedir=/var --sysconfdir=/etc --with-km=yes # cd /usr/src/drbd-8.4.0/drbd # make clean # make KDIR=/usr/src/linux-3.0 the error message: *** In file included from include/linux/security.h:25,

hi xen user/dev list, i want to compile drbd 8.4 against kernel mainline 3.0 source and receive an error: my commands: # cd /usr/src/drbd-8.4.0 # ./autogen.sh # ./configure --localstatedir=/var --sysconfdir=/etc --with-km=yes # cd /usr/src/drbd-8.4.0/drbd # make clean # make KDIR=/usr/src/linux-3.0 the error message: *** In file included from include/linux/security.h:25,