similar to: Bridge Networking stops working at random times

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

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 -

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 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

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.

In reading the Xen list there are frequent postings regarding NTP time drift issues for virtualized guests, correct configurations, etc. We have a solution (no cost) for monitoring time drift of hosts for anyone needing to do so or to determine whether their environment is maintaining time synchronization. For etiquette I am not publishing the information to the list mailing. If interested,

Greetings. I''ve reviewed the list archives, particularly the posts from Zakk, on this subject, and found results similar to his. drbd provides a block-drbd script, but with full virtualization, at least on RHEL 5, this does not work; by the time the block script is run, the qemu-dm has already been started. Instead I''ve been simply musing the possibility of keeping the drbd

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

Hi there, i have trouble with Win NT 4 and WIN98 in XEN DomU when i will install. WinNT says on Hardware detect: # i can find graficadapter, install fails, please reboot ... And Win98 starts in shell an says: # no valid cdrom drivers selected .... My install Disks are ISO Files, my Config: disk = [ ''file:/path/windisk.img,ioemu:hda,w'',

I am experiencing strange network behavior from several DomU''s. I can ssh from DomU to any host on the local lan/vlan, I can ping those hosts. However when I go to resolve a hostname DNS fails. I have verified that three other DomU''s are exhibiting the same behavior. I have also verified that Dom0 is functioning properly and can resolve hostnames and access hosts outside of the

Hi, I''m trying to get a WinXP guest to appear full screen on my RHEL5 system. I do the following: [root@mybox ~]# /usr/sbin/xm create /etc/xen/winxp.hvm Using config file "/etc/xen/winxp.hvm". Error: Errors were found at line 190 while processing /etc/xen/winxp.hvm: full-screen=1 winxp.hvm will "work" just fine if I comment out the full-screen line,

I am running Xen 3.3.0 and am trying to run a XenEnterprise image. The image has a hda directory with files called chunk-000000000.gz - chunk-000000042.gz and a filed called ova.xml with the following: <appliance version="0.1"> <vm name="VM"> <label> Manager </label> <shortdesc> </shortdesc> <config

I'm trying to justify a GlusterFS storage system for my technology development group and I want to get some clarification on something that I can't seem to figure out architecture wise... My storage system will be rather large. Significant fraction of a petabyte and will require scaling in size for at least one decade. from what I understand GlusterFS achieves redundancy through

Hello, We are trying to deploy our new ldap servers infrastructure with virtual servers running with xen. So we have installed two debian (etch) virtual machines under different domU''s (domUs are debian etch two). We are using bridge networking in xen, with default init scripts. In our test environment, these servers are working fine. But we are having problems with these new servers

Hi, I have Gluster 3.2.6 RPM's for Citrix XenServer 6.0. I've installed and mounted exports, but that's where I stopped. My issues are: 1. XenServer mounts the NFS servers SR subdirectory, not the export. Gluster won't do that. -- I can, apparently, mount the gluster export somewhere else, and then 'mount --bind' the subdir to the right place 2. I don't really know

Chip Clock HT Cache Bus Speed --------------------------------------------------------- 5080 3.7 GHz YES 2MB 1066 MHz 5160 3.0 GHz NO 4MB 1333 MHz Does the .7 GHz and HT worth more then 4MB cache and higher bus speed? The application is VoIP so there is not a lot of IO so I would not think Bus Speed would matter. I am finding mixed information on HT, some say it is great, others say it

In english: Buddies, The Eucalyptus is a system to build a cluster and provide a service such as Amazon EC2 on its own structure. It is very promising, flexible, stable and well documented. The team of Eucalyptus just created an Internet election to choose which distributions will be officialy supported by it. I would ask everyone for voting in Debian! Let me explain why. I have

In english: Buddies, The Eucalyptus is a system to build a cluster and provide a service such as Amazon EC2 on its own structure. It is very promising, flexible, stable and well documented. The team of Eucalyptus just created an Internet election to choose which distributions will be officialy supported by it. I would ask everyone for voting in Debian! Let me explain why. I have

I am trying to get a USB printer to work in a Linux domU. I am using Xen 3.0.3 and the Xen Linux kernel 2.6.16.40. I have hidden the USB controller''s PCI devices from dom0 and exported them to domU, and build the domU kernel with the necessary device support. When I boot the xenU kernel, it lists an error from the USB printer class code that allocating a write buffer failed. This is an 8k

Trying to get Xen working with Gluster. I understand you need --disable-direct-io-mode, however that cuts my disk I/O from 130 MB/s to only 22 MB/s. Also when I try to use xen with tap:aio, but only get to Creating root device. Red Hat nash version 5.1.19.6 starting Mounting proc filesystem Mounting sysfs filesystem Creating /dev Creating initial device nodes Setting up hotplug. Creating