similar to: Infiniband Drivers under Xen kernel?

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

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

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 -

Well I just tried up2date -u Testing package set / solving RPM inter-dependencies... Downloading headers to solve dependencies... ####################################### Downloading headers to solve dependencies... There was a package dependency problem. The message was: Unresolvable chain of dependencies: libibverbs 1.0.3-1 requires kernel-ib libmthca 1.0.2-1

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

I got Rmpi to compile with little difficulty, but had a tricky time setting the LD_LIBRARY_PATH to use the OpenMPI libs. I now get a different error when I try to load Rmpi > require(Rmpi) Loading required package: Rmpi librdmacm: couldn't read ABI version. librdmacm: assuming: 4 libibverbs: Fatal: couldn't read uverbs ABI version. CMA: unable to open

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

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

I am trying to update a centos box with an unsupported kernel (for XFS support): [root at snowybunting /]# uname -a Linux snowybunting.homelinux.net 2.6.9-34.106.unsupportedsmp #1 SMP Sat Mar 18 16:22:41 CST 2006 x86_64 x86_64 x86_64 GNU/Linux To update I did: yum update python-sqlite yum clean all yum update yum yum clean all yum update ..and I get the following > 91 packages excluded

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

I made the necessary changes in xend-config.sxp, network-route and guest config files to switch over to routing mode (as suggested in "Running Xen" book). I created guest VMs and I restarted xend. But when I checked ifconfig, but it still shows me the bridge configuration. Can anyone tell me what I am missing here?? Thanks & Regards, Siddharth Wagh MS, Electrical & Computer

Hey, if you haven't started already, now would be a good time to begin translating the release notes which are already on the wiki. We're going to begin QA tomorrow and will finish the release notes from our findings in QA. So if you now begin and watch the release notes page, you'll just have to put the changes into the already translated stuff. Thanks in advance (and for the work

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

Hi, just to avoid re-inventing the wheel, is there any document that can help me reduce even further a "minimum" installation of Centos 4.4 (BTW can you say 600mb is minimum)? I am in the process of creating a small Centos-4.4-based Asterisk box and I need to boot it from a CF card. Deleting useless packages will help me do what i want. Example: even a minimum install of Centos 4.4 (or

Hi, just to avoid re-inventing the wheel, is there any document that can help me reduce even further a "minimum" installation of Centos 4.4 (BTW can you say 600mb is minimum)? I am in the process of creating a small Centos-4.4-based Asterisk box and I need to boot it from a CF card. Deleting useless packages will help me do what i want. Example: even a minimum install of Centos 4.4 (or

It seems that lustre puts its modules in /lib/modules/2.6.16.21-0.8-default despite the fact that my kernel is 2.6.16.21-0.8-smp ! uname -a Linux n32 2.6.16.21-0.8-smp #4 SMP Sun Sep 24 08:47:30 BST 2006 i686 i686 i386 GNU/Linux make[3]: Nothing to be done for `install-exec-am''. /bin/sh ../../mkinstalldirs /lib/modules/2.6.16.21-0.8-default/kernel/fs/lustre /usr/bin/install -c -m 644