similar to: How to manage images/partitions for xen DomUs?

Hi people. Im new on Xen and I''m looking in how to do a physical migration on Xen. I know that there is a lot of choices (that is the first problem) My environment is simple: 2 physical servers, each one running one instance of XEN. Each host has 2 gigabit cards. One to talk with the world, other to talk between theirselves. I want to run the every vm on the both hosts, if one fail

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| | |

I was wondering if anyone can tell me if it is possible to mount a drive (single partition) to a nested directory on an existing Samba mount point and have the entire structure considered one drive? The situation is this. I have a large drive mounted to a share called "/pub". This has been identified as my Samba mount point and all works as it should. What I would like to do is

hi everyone, I am planning on creating a local SAN via NFS(v4) and several redundant nodes. I have been using DRBD on linux before and now am asking whether some of you have experience on on-demand network filesystem mirrors. I have yet little Solaris sysadmin know how, but i am interesting whether there is an on-demand support for sending snapshots. I.e. not via a cron job, but via a

One more follow on, The combination of kernel.panic=60 and kernel.printk=7 4 1 7 seems to have netted the culrptit: E01-netconsole.log:Jan 18 09:45:10 E01 (10,0):o2hb_write_timeout:137 ERROR: Heartbeat write timeout to device dm-12 after 60000 milliseconds E01-netconsole.log:Jan 18 09:45:10 E01 (10,0):o2hb_stop_all_regions:1517 ERROR: stopping heartbeat on all active regions.

Hi, I am setting up a xen 3 enviroment that has a file backend and 2 application servers with live emegration between the 2 application servers. --------- --------- | app 1 | | app 2 | --------- --------- \ / \ / \ / ---------------- | file backend | ---------------- I am planing on using lustre clustre file system on the file backend. Are there

Hello, I'm beginning to give up on making Linux-HA's heartbeat work for my environment (CentOS x86_64) and am wondering what other option have I got to help me: 1. Use IPVS to maintain a cluster of virtual servers, either master/slave or load-balanced. 2. Use DRBD in master/slave fashion to keep a home-grown application highly-available. The first thing I stumbled upon is RedHat Cluster

Hi all Sombedody can points me to a good tutorial about using high availabilty clusters with xen using heratbeat2, ocfs2 and evms under rhel/centos, debian or sles?? I am doing various searches without a result ... (google shows me a lot of references, mailing lists, etc but not a good doc) Many thanks. -- CL Martinez carlopmart {at} gmail {d0t} com

I have a system with a large LVM VG partition. I was wondering if there is a way i could share the partition using nbd and have the nbd-client have access the LVM as if it was local. SYSTEM A: /dev/sda3 is a LVM partition and is assigned to VG volgroup1. I want to share /dev/sda3 via nbd-server SYSTEM B: receives A''s /dev/sda3 as /dev/nbd0. I want to access it as VG volgroup1. I am

Hi, I''ve got a question regarding failover. I''ve set up Xen and DRBD with the versions packaged for CentOS 5.4. Live migration of the domU''s is working between the two xen nodes quite happliy. Each domU has two LVM LVs associated with it, partitioned as swp and root. DRBD is configured to just sync the LV containing the root partition, not swp. I''ve seen

Does anyone here on this list have experience with HA clustering? I'm previewing drbd as a potential tool, and wanted to know if anyone here has experiemented with it at all... How stable is it? Does the additional likelyhood of failure given the additional complexity actually get compensated by a better overall system? http://www.drbd.org/ Any feedback is welcome... -Ben --

Hi all, We're looking at deploying a small Xen cluster to run some of our smaller applications. I'm curious to get the lists opinions and advice on what's needed. The plan at the moment is to have two or three servers running as the Xen dom0 hosts and two servers running as storage servers. As we're trying to do this on a small scale, there is no means to hook the

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 guys Does anyone use lvm2 backends for domU storages ? I do and I wanted to use lvm''s snapshot feature to make backups of domUs in background but I got the following problem. When I create a snapshot LV and copy data from it to backup storage it works perfect. Then I do umount and then lvremove. lvremove asks me if I really want to remove the volume and then just hangs forever.

Hi, We are using the heartbeat and drbd packages from latest centos (4.3) extras repository. Upon installation of both packages I noticed that if you "chkconfig heartbeat off" that will cause drbd to chkconfig'ed on. And visa versa. After doing some trouble shooting it turns out the "BEGIN INIT INFO" sections appear to be the cause. drbd has: ### BEGIN INIT INFO #

I have an existing in-production LAMP server running Centos 5.1. It uses physical partitions on top of hardware RAID1, having / /home /var and /boot on separate partitions. We have a near-identical system I am thinking of bringing in as a DRBD/Heartbeat companion. One solution may be to use csync2 [http://oss.linbit.com/csync2/] on /etc and /usr/local (the only areas that will differ from

Hi, Sorry for the need of the long winded email. Looking for some answers to the following. I am setting up a xen PV domU on top of a LVM partitioned DRBD device. Everything was going just fine until I tried to test the filesystems in the domU. Here is my setup; Dom0 OS: CentOS release 5 (Final) Kernel: 2.6.18-8.1.4.el5.centos.plusxen Xen: xen-3.0.3-25.0.3.el5 DRBD:

I wonder if someone can point me in right directions. I have two dell servers I setup iscsi so I have four 2 tb hard drives and i had used lvm to create one big partiton and share it using iscsi. How I go about assigning sections of iscsi for virtual hard drives . should go about assigning Should I export the whole 8TB as one iscsi and then use lvm to create smaller virtual disk. Or should I

Hi We've got drbd going between 2 nodes:) ATM there is un-partitioned space on each node but (we think) they are syncing OK. It looks as though it has synced the whole partition (2GB) from the primary node 1 to the other node: node 1 smb1:/home/steve # cat /proc/drbd version: 8.4.4 (api:1/proto:86-101) GIT-hash: 3c1f46cb19993f98b22fdf7e18958c21ad75176d build by SuSE Build Service 1:

Hello all, has someone worked with DRBD (http://www.drbd.org) for HA of mail storage? if so, does it have stability issues? comments and experiences are thanked :) Thanks, Rodolfo.