similar to: Suggestions on XEN configuration with local and remote iSCSI

Hi all, some results from my configuration. I''ve this configuration (I''m not interested in raw top performances but in reliability.. so, I can accept slow MB/sec and prefer to rely on a RAID6, for example): 1 Infortrend iSCSI Array A16E-G2130-4 with: - 1GB DDR cache - RAID6 - 7 x 500GB sataII Seagate ST3500630NS with 16mb (no budget for SAS) - one of the logic volumes (about

Dear all, I will setup soon an Infortrend iSCSI SAN device with a raid6 volume and a DELL PE1950 (8 VMs) with a Qlogic iSCSI HBA (server to be duplicated at later time for redundancy). My priorities are: 1) VMs on the iSCSI SAN in order to boot them also by another server if the first one fails 2) performances 3) live migration is a non mandatory option (i.e. I can suffer to shutdown

Hi All, I apologize in advance if this strays too far from the etiquette on the Xen userlist, however the amount of help, brainpower and experience I''ve received from this list with Xen and "peripheral" related issues (i.e. DRBD) have been worth more than it''s weight on gold and I''m hoping someone will be kind enough to give me a "best practices"

Hello, We''ve been using Xen on several servers with direct-attached storage for a number of years. Now we''re looking to buy more Xen servers and re-purpose two of the older ones as SANs to hold the domU filesystems, in order to achieve redundancy and live migration ability. I''m looking for comments on our proposed design. SAN 1 - existing server w/ 4 GB, 2x

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Hi, has anyone running Xen on top of iSCSI on top of a DRBD active/passive cluster? Have you tested failovers? Do Xen guests survive? thx, B. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

Hi, Has anyone ever actually implemented a replicating iSCSI SAN using CentOS? I saw directions here: http://wiki.centos.org/HowTos/Ha-Drbd It looks doable, but I am not the strongest linux person and would like to hear if anyone has tried and if there any caveats. Also, I noticed that these directions are for CentOS 5. Is it pretty much the same for CenOS 6? Lastly, this might sound crazy,

Dear all, since it could be of interest for the list, here I post a link to compiled kernel for XEN 3.1 on a DELL PowerEdge 1950 compiled with gcc (GCC) 4.1.2 20061115 (prerelease) (Debian 4.1.1-21) on a Debian4 distribution. This is provided AS IS AND WITHOUT ANY SUPPORT AND/OR ANY RESPONSIBILITY :-) The first link (7 MB) pack all the files you should have in /boot. The second link (12 MB)

Good day. Is XCP supports any way to mirror network storages (iscsi, f.e.)? As I understand, XCP does not support DRBD yet, so, which other ways are? --- wBR, George. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

I''ve been brainstorming... I want to create a 2-node HA active/active cluster (In other words I want to run a handful of DomUs on one node and a handful on another). In the event of a failure I want all DomUs to fail over to the other node and start working immediately. I want absolutely no single-points-of-failure. I want to do it with free software and no special hardware. I want

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

Has anyone succesfully setup, and used CentOS as an iSCSI server? I'm trying to setup a server with 4x500GB HDD's, setup in RAID 10 to act as an iSCSI server for a virtualization project, but I can't find a decent howto on how to setup an iSCSI server using CentOS. I would like to setup something like Openfiler, but we also need todo some other stuff that OpenFiler doesn't

I found a lot of stuff about this on the web, but never an answer that worked. One of the most promising hints was about udev maintaining links in the /dev/disk/by-* directories. This works just fine in CentOS 5, but not CentOS 4. As I was trying to use the iSCSI devices as VMware disks this was particularly frustrating. After banging my head on this for a while, I figured out how to make

Two questions (and then a bonus one), kind of interrelated, but, first, some basic info. I'm using OCFS2 on OpenSUSE 10.2, kernel 2.6.18.8(-0.7). There are three nodes in the OCFS2 cluster, backed by Openfiler iSCSI storage. First, I'm using Openfiler and iSCSI volumes to back my OCFS2 file system. The nodes that are part of the OCFS2 cluster use the file system as a shared storage

Hi, I'm currently (re-)planning my email setup and have been doing some research. I have done some searches and read several threads in the areas of my questions here. While there are some that come close I haven't yet been able to get all my questions answered. I currently run a postfix, dovecot & roundcube setup and have about 2000 active accounts. I have a separate SMTP server

Has anybody tried or knows if it is possible to create a MD RAID1 device using networked iSCSI devices like those created using OpenFiler? The idea I'm thinking of here is to use two OpenFiler servers with physical drives in RAID 1, to create iSCSI virtual devices and run CentOS guest VMs off the MD RAID 1 device. Since theoretically, this setup would survive both a single physical drive

Hello all, I am looking to build a larger array (6TB) using CentOS 4.4 to archive data to. We want to have the Windows server mount this array as a local drive so we were looking at iSCSI to do it. I have played with it in the past and gotten it to work in this combo, but I have a question about access to the data on the local (Centos) machine. If I understand correctly, when I mount the

Does anyone have OCFS2 running with the "Red Hat Cluster Suite" on RHEL? I'm trying to create a more or less completely fault tolerant solution with two storage servers syncing storage with dual-primary DRBD and offering it up via multipath to nodes for OCFS2. I was able to successfully multipath a dual-primary DRBD based GFS2 volume in this manner using RHCS and GNBD. But switched

Hello, I have a small Xen farm of 8 dom0 servers with 64 virtual machines running para-virtualized and this has been working great. Unfortunately, I''ve hit a limit: my iSCSI hardware supports only 512 concurrent connections and so I''m pretty much at the limit. (Wish I would have seen that problem sooner!) Of course, 87% of those connections are idle-- but necessary because I

Hello all, At our office a have a server running 3 Xen domains. Mail server, etc. I want to make this setup more redundant. There are a few howtos on the combination of Xen, DRBD, and heartbeat. That is probably the best way. Another option I am looking at is a piece of shared storage, a machine running CentOS with a large software RAID 5 array. What is the best means of sharing the storage?