similar to: iscsi storage, LACP or Multipathing | Migration or rebuild?

First, I am new to Xen.... So forgive me if I am overlooking something. Here is my situation, I have multiple dom0''s that are part of an ocfs2 cluster. The dom0''s mount multiple volumes (/home, /app, /images) from an ISCSI storage array. Their eth2/eth3 network interfaces are attached to a private storage network. They are not part of Xen''s network bridge and have

I'm trying to test out an Equallogic PS5500 with a server running CentOS 4.7 I can create a volume and mount it fine using the standard iscsi-initiator-utils tools. The Equallogic box has 3 Gigabit interfaces and I would like to try to set up things so I can read/write from/to the volume using multiple NICs on the server i.e. get 200+ Mbyte/s access to the volume - I've had some

Hello all. We recently purchased HP Proliant DL380 G7 server and also a HP Lefthand P4500 G2 24TB iSCSI box. The server itself has Quad Ethernet based on the BCM5709 Chipset from Broadcom (NetXtreme II). My main question is about iSCSI offload mechanism, as iSCSI itself is pretty new to me but I have gotten a good hold on it tho. I have managed to setup and configured our Lefthand box into

We''re currently designing a ZFS fileserver environment with iSCSI based storage (for failover, cost, ease of expansion, and so on). As part of this we would like to use multipathing for extra reliability, and I am not sure how we want to configure it. Our iSCSI backend only supports multiple sessions per target, not multiple connections per session (and my understanding is that the

We've been wrestling with this for ... rather longer than I'd care to admit. Host / initiator systems are a number of real and virtualized CentOS 5.5 boxes. Storage arrays / targets are Dell MD3220i storage arrays. CentOS is not a Dell-supported configuration, and we've had little helpful advice from Dell. There's been some amount of FUD in that Dell don't seem to know what

I've got my RAC cluster running pretty smoothly now (thanks again for all the help so far), but I only have single connections between the servers and the RAID array. The servers each have two Qlogic HBAs, and I'd like to find out if there's any reasonable way to implement multipathing. The platform is RHEL 3, and Red Hat's knowledgebase indicates that they strongly recommend

Hello, I hope to be in the right list. my question is the following. I can''t seem to get multipathing configure on XCP 1.6. In XenCenter I was able to enable "Multipath" however, in the LUN under general tab I see " multipath 1 of 1 active", the the CLI I do the following command xe --m node session it list only one session. Can someone help me please? Thanks in

Hi folks ... well I''m quite new to ROR and a client asked for a tool i''d like to write in ruby ... well but there''s a problem: is it possible to READ pdf with ROR? And furthormore can i extract special layers? Like the comment layer for example. (i know my englisch is quite rusty ^^) --~--~---------~--~----~------------~-------~--~----~ You received this message

Dear list, we have a relatively new Sun Storage 7310, where we connect CentOS 5.5 Servers (IBM LS21/LS41 Blades) via Brocade Switches, 4GBit FC. The Blades boot from SAN via qla2xxx, and have no harddisks at all. We want them to use multipathing from the very beginning, so /boot and / are already seen by multipathd. Problem is, that the Sun 7310 has two storage heads which run in

Hi How can i enable this feature because: Running /opt/xensource/libexec/mpp-rdac --enable it says: No module mppUpper found for kernel 2.6.32.12-0.7.1.xs1.0.0.298.170582xen, aborting. There is no MPP modules... Terveisin/Regards, Pekka Panula, Sofor Oy - Jatkuvat palvelut _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com

Hi list! I have a server with dual port Qlogic iSCSI HBA. I set up the same LUN for both ports, and boot the CentOS installer with "linux mpath". Installer detects multipathing fine, and creates mpath0 device for root disk. Installation goes fine, and the system boots up and works fine after the install from the multipath root device. After install the setup is like this: LUN 0 on

I am fairly new to ISCSI and SAN technology but having recently invested in the technology I am trying to find out exactly what can and can not be manipulated, filesystem wise, without requiring a reboot. I am using the inbuilt software ISCSI initiator and multipathing in CentOS 5.1. My steps so far. Create 10GB volume on SAN # iscsiadm -m session -R # fdisk /dev/mapper/mpath0 # kpartx -a

Hi, I have an HP MSA 2000i as SAN (iSCSI) and since I'm starting with SANs, I'm seeking for advice. We are currently using HP Proliant 380 G5 + MSA 70 (SAS, direct-attached storage) for our production servers. At first, I thought I'd be using the SAN only for non-critical operations, like temporary additional storage for disk-based backups and snapshots, so I planned on using

Hi. I get these ACPI errors constantly every 5min or so in /var/log/messages and dmesg : kernel: ACPI Error: SMBus or IPMI write requires Buffer of length 42, found length 20 (20090903/exfield-286) kernel: ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PMI0._PMM] (Node ffff88061056cb00), AE_AML_BUFFER_LIMIT kernel: ACPI Exception: AE_AML_BUFFER_LIMIT, Evaluating _PMM

Hi List, I don''t know if this is something that is a simple matter of opinion or if there are strong reasons to take one route or the other. I have dom0 nodes with dedicated bond interfaces that connect to a storage traffic-only VLAN. Currently I have a few domUs running that have large-ish volumes on the iSCSI SAN, and to present the volumes I''m connecting the dom0s to the

I''m seeing seriously degraded performance with round-robin SAS multipathing. I''m hoping you guys can help me achieve full throughput across both paths. My System Config: OpenSolaris snv_134 2 x E5520 2.4 GHz Xeon Quad-Core Processors 48 GB RAM 2 x LSI SAS 9200-8e (eight-port external 6Gb/s SATA and SAS PCIe 2.0 HBA) 1 X Mellanox 40 Gb/s dual port card PCIe 2.0 1 x JBOD:

PowerEdge 2850 with PERC SCSI RAID controller. 16GB RAM Dual Intel(R) Xeon(TM) CPU 3.00GHz Using megaraid driver and xfs on 3x 300GB SCSI disks as /dev/sdb (total 572GB) (RAID-5) Stock Centos 6.4 x64, everything updated. Kernel : 2.6.32-358.2.1.el6.x86_64 #1 SMP My Load always shows : top - 10:30:21 up 23:09, 1 users, load average: 0.99, 0.96, 0.79 yet there is no services what-so-ever

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

Hi. Anyone using CentOS 4.2 iscsi-initiator-utils-4.0.3.0-2 in a production setup? I'm planning to do so shortly, and would like to hear about any experiences (good/bad) or recommendations. The target is going to be a Dell AX100i. Br, Morten

Hi, Some body know how to attach a LUN directly to an VM? Is two node pool with storage over multipath FC tied by an Qlogic hba. I''m using lvmohba with out problems, but I want to assign it directly to VM to increase the throughput. Thanks for the advice. -- Atentamente, Julian M. Sanchez Director de Tecnologías BIDDA IT Solutions Email: julian@bidda.net IP-PBX: +57(2)3333381 Ext.