search for: clvm

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 ______________________________________________...

...sternode3# dd if=/dev/mapper/winxp of=/node3winxp When I download these files and diff them, they all three differ. Also, sometimes very strange things happen. For example I download some file into winxp, shut it down, then start it on another node, and file is missing?!?!?!?! Should I use maybe CLVM and not raw volumes from storage? Why is this happening? -- | Jakov Sosic | ICQ: 28410271 | PGP: 0x965CAE2D | ================================================================= | start fighting cancer -> http://www.worldcommunitygrid.org/ | __________________________________...

Hi, I get this error when i try to start clvm (debian lenny) : This is a clvm version with openais # /etc/init.d/clvm restart Deactivating VG ::. Stopping Cluster LVM Daemon: clvm. Starting Cluster LVM Daemon: clvmCLVMD[86475770]: Mar 8 11:25:27 CLVMD started CLVMD[86475770]: Mar 8 11:25:27 Our local node id is -1062730132 CLVMD[86475770]:...

Hi, i am setting up a cluster of kvm hypervisors managed with libvirt. The storage pool is on iscsi with clvm. To prevent that a vm is started on more than one hypervisor, I want to use a lockmanager with libvirt. I could only find sanlock as lockmanager, but AFSIK sanlock will not work in my setup as I don't have a shared filesystem. I have dlm running for clvm. Are there lockmanager implementations...

Hi, I'm needing to expand a LUN on my EMC CX4-120 SAN. (Well I already had done it). On this LUN I had a PV of a cLVM VG. Know I need to run pvresize on it. Has anybody done this on a cLVM PV ? I'm trying to rescan the devices, but I can't "see" the new size. And, googling on it I can only find RHEL5.2 responses. Thanks in advance, Antonio. -- +-+-+-+-+-+-+-+-+-+-+-+...

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| | |

...ported 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 hypervisor01! I do not want to use GFS2/OCFS2 on top of CLVM, since I just want to provide live-motion. I''ll never try to setup two simultaneous domUs accessing the same CVLMs logical volumes. If someone can help me I will appreciate! This looks like the best way to create a low cost shared storage, I''m right? I do not want NFS for my d...

...vm guests. Live migration works nice. But snapshots from logical volumes only usable, when i first deactivate logical volume on the second node - otherwise errors in metadata came up and snapshot is broken/inconsistent. both xen 3.3 are installed on ubuntu 8.04. can anyone explain me, how to set up clvm or point me to a howto/cookbook/step-by-step or something similar? Any try''n''error session in the last week ends up in dlm problems or waiting for fence or locking_type 2 unkown etc etc etc. using clvm i hope i can realize an easy to use failover/ha szenario --- maybe there are b...

...this date we only dealt with a small number of VM''s (~10)on not too big hardware (2xquad xeons+16GB ram). As I''m the "storage guy" I find it quite convenient to present to the dom0s one LUN per VM that makes live migration possible but without the cluster file system or cLVM complexity. The thing is that Linux has a 255 SCSI device limit apparently (255/2= ~128 with multipath) and that won''t scale in big installations (300 VMs for example). Any experiences on this scale? Regards, -- Ciro Iriarte http://cyruspy.wordpress.com -- ____________________________...

...llo all We are looking into ovirt for several weeks now and i have to say that it looks very promising. Our current environment is based on a lot off shell scripts and xen. We would like to move to ovirt but there are some things we would like to have working before moving. 1. using FC, san and clvm for storage 2. The ability to migrate virtual machines when we have to do maintenance on a physical host. What work is done at the moment to support the above? With kind regards William van de Velde

...n 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 hoping this will allow me to share LV partitions on volgroup1 which is used by XEN domUs. I think i read something about CLVM. Will this allow me to do what I want? how do i go about setting up a clvm? TIA, Tomoki _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

I'm desparately looking for more ideas on how to debug what's going on with our CLVM cluster. Background: 4 node "cluster"-- machines are Dell blades with Dell M6220/M6348 switches. Sole purpose of Cluster Suite tools is to use CLVM against an iSCSI storage array. Machines are running CentOS 5.8 with the Xen kernels. These blades host various VMs for a project. The iS...

Please tell me if I am wrong : Xen needs LVM to perform domU snapshots and snapshots must be performed by dom0. By the way, a LVM volume group should not be used by more that one kernel at the same time. So if we use a SAN storage, one volume group should be activated on only one server and deactivated on the others. But if we do that, it should not be possible to perform live migration of

Hi Everyone, I am going to get a storage server which will be connected to my Xen hosts via iSCSI/Ethernet. I wish to use LVM for the DomU disks. The storage server will have a RAID10 array, and 2 Xen hosts will connect to this (Each will have a 50% share of the RAID10 array, space wise). What is the best way to go about this? Should I: a) Split the RAID10 array into 2 partition on the

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...

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 accidentally started the same VM on two servers and corr...

...ng directly the multipath dm device as phy disk ). This is working nicely, live migration works fine, easy setup even if the multipath.conf can get a bit fussy with the growing number of LUNs : but no fencing at all, I can start the VM on both node and this is BAD! Then I''ve tried to used cLVM on top of the multipath. I''ve managed to get cLVM up and running pretty easily in the cluster environment. From here to way of thinking: 1. One big SR on the SAN split into LV that I can use for my VM. A huge step forward flexibility, no need to reconfigure the SAN each time. Still...

Hello list I've installed cluster suite with 8 physical nodes, these are connected to a SAN using CLVM and AOE protocol. The cluster suite runs on the physical nodes/servers, in dom0. If I have to use GFS, where do I install this? What is the right approach to using GFS with Xen. I see 2 options: 1. I install GFS inside each domU (unprivileged domain, the actual VM). 2. I install GFS on CLVM volu...

I''ve installed debian lenny amd64, it is frozen now. I''ve install kernel for xen support but it doesn''t start. It says "you need to load kernel first" but I''ve installed all the packages concerning xen, also packages related to the kernel. Perhaps lenny doesn''t support xen anymore? Any solution?

I'm trying to set up SAN-based shared storage in KVM, key word being "shared" across multiple KVM servers for a) live migration and b) clustering purposes. But it's surprisingly sparsely documented. For starters, what type of pool should I be using?