search for: fibre

I have added a specification of probes for the fibre channel COMSTAR port provider to the DTrace section of wikis.sun.com. The proposal may be found here: http://wikis.sun.com/display/DTrace/fibre+channel+Provider I welcome feedback regarding this proposal. Thanks, Sam

I have a Dell PowerEdge 2950 and am looking to add more storage. I know a lot of factors can go into the type of answer given, but for present and future technology planning, should I look for a rack of SATA, SCSI, or fibre channel drives? Maybe I'm dating myself with fibre channel, and possibly SCSI? I may be looking to add a few TB now, and possibly more later. What are people using these days? What throughput and reliability are you seeing? What accounts for the cost differences? Thanks. Scott

For quite some time I?ve been using FreeNAS to provide services as a NAS over ethernet and SAN over Fibre Channel to CentOS 7 servers each using their own export, not sharing the same one. It?s time for me to replace my hardware and I have a new R720XD that I?d like to use in the same capacity but configure CentOS 7 as a Fibre Channel target rather than use FreeNAS any further. I?m doing virtualizati...

For quite some time I?ve been using FreeNAS to provide services as a NAS over ethernet and SAN over Fibre Channel to CentOS 7 servers each using their own export, not sharing the same one. It?s time for me to replace my hardware and I have a new R720XD that I?d like to use in the same capacity but configure CentOS 7 as a Fibre Channel target rather than use FreeNAS any further. I?m doing virtualizati...

We have a setup with 15 hosts fibre attached via a switch to a common SAN. Each host has a single fibre port, the SAN has two controllers each with two ports. The SAN is exposing four OCFS2 v1.4.2 volumes. While performing a failover test, we observed 8 hosts fence and 2 reboot _without_ fencing. The OCFS2 FAQ recommends a default di...

In principle, will Xen handle virtualization of Fibre Channel HBA''s? Say I have a physical server with a single FC HBA installed. If I create two domains, will XEN virtualize the HBA so that both of the domains can talk to the FC fabric? -M. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource...

...xx, naa.xxxxxxxxxxxxxxx, naa.xxxxxxxxxxxxxxx, naa.xxxxxxxxxxxxxxx Fabric module features: acls Corresponding kernel module: tcm_qla2xxx I have attached the log but don't see anything that really stands out. log.txt I checked per the link http://www.linux-iscsi.org/wiki/Fibre_Channel#Enable_target_mode to ensure that I have initiator mode disabled # cat /sys/module/qla2xxx/parameters/qlini_mode disabled The kernel modules are loaded. # lsmod | grep qla2xxx tcm_qla2xxx 32768 1 target_core_mod 335872 4 tcm_qla2xxx,iscsi_target_mod qla...

Hi All, just a quick question I could not figure out. Is there a way to export a PCI device to multiple VMs (para) keeping it available to dom0? Xen version is 3.0.4. Thanks, Jan _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

...ring if any one knows of a way to manage Xyratex disk shelves from CentOS (in particular CentOS 4). More details: Some years ago I installed a NAS unit from Exanet which consists of 2 rebadged IBM x3650 head nodes and a couple of Xyratex disk shelves with a total of 96 TB of raw disk, connected by fibre channel. The operating system is based on CentOS 4.4, but is modified, and runs a proprietary file system. It has pretty good performance and I'm happy with it. You may know that the company went bust some years ago, so I have been running this system unsupported. I am loath to give up the dis...

The ZFS crew might be better to answer this question. (CC''d here) --jc William Yang wrote: > I am having issues creating a zpool using entire disks with a fibre > channel array. The array is a Dell PowerVault 660F. > When I run "zpool create bottlecap c6t21800080E512C872d14 > c6t21800080E512C872d15", I get the following error: > invalid vdev specification > use ''-f'' to override the following errors: > /dev/d...

...ive migration during heavy load of domU. scenario: - both dom0s and domU are running on Debian Sarge. - script on dom0 triggers live-migration to the other dom0 - domU is running I/O tests, e.g. bonnie++ - domUs root- (ext3) and swap fs is stored on two partitions in a san - san is connected using fibre channel cards to both dom0s - san in dom0 works fine (tested with bonnie++ and own consistency test) observation: - migration works several times, usually something between 10 and 30 times - then something strange happens: A) either domU has completely disappeared on both dom0s xend.log on...

...access to disk storage physically created on FC array. I read that this could be done by OCFS or Lustre file system but my question is: how virtualized OS (dom>0) recognizes FC resources. If I understand well dom0 sees all as local disks: scsi disk in physicall server and connected via HBA fibre channel resource. And if I create dom1 partially (system part) located on local scsi disk and partially (shared part) on FC array - then how other domu''s located on other physical machines will see this shared ocfs-ed volume? Is it an issue of HBA driver to make it possible? I would b...

Hello, I received the following question from a company I am working with: We are having issues with our early experiments with ZFS with volumes mounted from a 6130. Here is what we have and what we are seeing: T2000 (geronimo) on the fibre with a 6130. 6130 configured with UFS volumes mapped and mounted on several other hosts. it''s the only host using ZFS volume (only one volume/filesystem configured). When I attempt to load the volume from backup, we see memory being consumed at a very high rate on the ho...

Hello, I have been looking around all day and lot''s of things are being thrown at me such as npiv and vscsi and such. I have an HITACHI,DF600F SAN which goes via two switch fabrics and plugs in to the dual port Qlogic HBA on the server(s). I have 4 Dell 2950''s at current which are under-utilised. I want to buy new 2xR710 and consolidate these 4 servers to a single physical

CentOS 6.4 (amd64) stock kernel. HBA FC Accusys ACS 63200NT I built the driver from source, insmod activates the device and I can see the 24 TB storage volume via 'parted --list' I have created a XFS files system and mounted it under /srv/ Where do I need to install the driver in /lib/modules/ ... directory tree so that it is loaded automatically when the system boots? TIA, -- Arun

Please reply to david.curtis at sun.com ******** Background / configuration ************** zpool will not create a storage pool on fibre channel storage. I''m attached to an IBM SVC using the IBMsdd driver. I have no problem using SVM metadevices and UFS on these devices. List steps to reproduce the problem(if applicable): Build Solaris 10 Update 2 server Attach to an external storage array via IBM SVC Load lpfc driver...

...ing on or not. -- Ray -----Original Message----- From: xen-users-bounces@lists.xensource.com [mailto:xen-users-bounces@lists.xensource.com]On Behalf Of Michael Mey Sent: Wednesday, December 07, 2005 9:00 AM To: xen-users@lists.xensource.com Subject: [Xen-users] live migration with xen 2.0.7 with fibre channel onDebian - help needed Hi, I''d like to test the stability of live migration during heavy load of domU. scenario: - both dom0s and domU are running on Debian Sarge. - script on dom0 triggers live-migration to the other dom0 - domU is running I/O tests, e.g. bonnie++ - domUs root...

...laces a few minutes later. At one point, we had one node's load average up over 300. Our site activity has been on the rise, and the problems usually occur during peak mid-day hours. Under normal conditions, "top" shows the CPUs spending most of their time waiting on the very busy fibre channel. During the slowdowns, the processors are mostly busy with system calls. Traffic over both the fibre channel and gigabit interconnect seems to drop off considerably at the same time. I've got a TAR open, but the support people are still in the very preliminary stages (for example, w...

Hi, I need to migrate about 8Tb of data from a Mac Fibre Channel RAID to by LVM Ext3 Linux Fibre Channel RAID. For speed I planned to connect both RAID's to my CentOS Server and copy the data directly. The Mac volume is formatted as Mac OS Extended (Journaled) it seems that CentOS 5.4 supports reading HFS volumes but not HFSPlus volumes. Is there a...

Hi, I created an HVM type virtual machine and installed RHEL5U7 guest in it. I have assigned 7 scsi disks to the virtual machine in physical mode (using phy:), however, I see those disks are xvd and not as scsi. Is anyone aware what the problem might be ? Please let me know what kind of information do I need to post in order to narrow down to the problem. Thanks, K