similar to: Xen VMs on GFS

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

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| | |

Hello: I am planning to implement GFS for my university as a summer project. I have 10 servers each with SAN disks attached. I will be reading and writing many files for professor's research projects. Each file can be anywhere from 1k to 120GB (fluid dynamic research images). The 10 servers will be using NIC bonding (1GB/network). So, would GFS be ideal for this? I have been reading a lot

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

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 everyone! I have 2 hosts + 1 ISCSI device. I want to create a shared storage repository and both hosts use together. I wont use NFS. prepared sr: xe sr-create host-uuid=xxx content-type=user name-label=NAS1 shared=true type=iscsi device-config:target=xxxx device-config:targetIQN=xxxx hosts see the iscsi device: scsi4 : iSCSI Initiator over TCP/IP scsi 4:0:0:0: Direct-Access NAS

Hi all, If you have had experience hosting GFS/GFS2 on CentOS machines could you share you general impression on it? Was it realiable? Fast? Any issues or concerns? Also, how feasible is it to start it on just one machine and then grow it out if necessary? Thanks. Boris.

I am considering building a pair of storage servers that will be using CentOS and GFS to share the storage from a Coraid (SATA+Raid) EtherDrive shelf. Has anyone else tried such a setup? Is GFS stable enough to use in a production environment? There is a build of GFS 6.1 at http://rpm.karan.org/el4/csgfs/. Has anyone used this? Is it stable? Will I run into any problems if I use CentOS 3.5

Hi there,I run samba as a PDC and tried to make this PDC high available with redhat cluster suite and gfs. I experienced the following problem while doing this: If I set the option locking = no in smb.conf it takes about 4 minutes to copy a file of 1GB size. If I set locking = yes it takes about 1 hour. Im not sure if locking = no sets locking off for all locking options. At least I need locking

Hi - Is there someone around who successfully got cLVM on Debian/Lenny working? I was wondering if I was the only one facing problems with... Thanks in anticipation, -- Olivier Le Cam Département des Technologies de l''Information et de la Communication CRDP de l''académie de Versailles _______________________________________________ Xen-users mailing list

Are there people currently managing multiple Dom0''s and making significant use of migration? I''m loking at a potential setup of 16 or so physical systems with perhaps 64 or so virtual systems (DomU''s I suppose Dom0 is also a virtual system if I understand thing correctly, but that''s no twhat I mean here). It seems to me that making heavy use of migration for

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 trying to get a proof-of-concept type setup going...I have a storage box and 2 xen servers...I am using file based disk that live on the aoe device...i can run the vm from either host without issue...when I run the live migration, the domain leaves the xm list on host 1 and shows up on host 2 (however there is a pause for pings of about 2 minutes?)...after it is on host 2, I can xm console

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

Hi everyone, I am currently converting my AoE/GFS setup over to GlusterFS. So far I have been very impressed with Gluster and am loving it's ease of use. I wrestled with GFS for days, and still do too much IMO. ;) I had a question about TCP/IP settings. I know Infiniband as interconnects would give us the best performance, but we currently do not have the budget to upgrade everything, so I

Hello, I''m setting up a Xen system since I have diferent choices to create the domU''s partitions: raw partition, lvm, files. I''ve done some tests with hdparm and it all seems to be the same. Can anyone, please, share with me what if the best method. Best regards, Luis _______________________________________________ Xen-users mailing list

What happens to the block layer if the block request queue gets very, very long? Imagine there are many DomUs and they are all working against VERY SLOW disks. I wish I understood the entire chain better, and I''m sorry to ask such a vague question. I understand this is a weird question, because the performance implications of this scenario are horrific. The reason I ask is that

Hi, I have configured two machines for testing gfs filesystems. They are attached to a iscsi device and centos versions are: CentOS release 5.4 (Final) Linux node1.fib.upc.es 2.6.18-164.el5 #1 SMP Thu Sep 3 03:33:56 EDT 2009 i686 i686 i386 GNU/Linux The problem is if I try to mount a gfs partition it hangs. [root at node2 ~]# cman_tool status Version: 6.2.0 Config Version: 29 Cluster Name:

Are the RPMs for the latest GFS kernel module GFS-kernel-2.6.9-72.2.0.8 to be used with the version 2.6.9-55.0.9.EL available ? I tried to compile the Source RPMs available from the Red Hat site but the modules can't be loaded because of invalid module format arising from version magic issues. The syslog shows: node0 kernel: gfs: version magic '2.6.9-55.0.9.ELsmp SMP 686 REGPARM

HI, Sorry for repeating same mail ,while composing that mail i mistakenly typed the send button.I am facing problem with my gfs and below is the running setup. My setup Two node Cluster[only to create shared gfs file system] with manual fencing running on centos 4 update 5 for oracle apps. Shared gfs partition are mounted on both the node[active-active] Whenever i type df -h command it