search for: powerpath

Hi there, have a strange behavior if i?ll create a zfs pool at an EMC PowerPath pseudo device. I can create a pool on emcpower0a but not on emcpower2a zpool core dumps with invalid argument .... ???? Thats my second maschine with powerpath and zfs the first one works fine, even zfs/powerpath and failover ... Is there anybody who has the same failure and a solution ? :) Gr...

How much fun can you have with a simple thing like powerpath? Here''s the story: I have a (remote) system with access to a couple of EMC LUNs. Originally, I set it up with mpxio and created a simple zpool containing the two LUNs. It''s now been reconfigured to use powerpath instead of mpxio. My problem is that I can''t import the p...

A couple years ago, we moved to Oracle RAC on Linux using ocfs that is SAN attached to an EMC CLARiiON. At the time, there was a reason that we did NOT use EMC's Powerpath (I just can't recall what that reason was). What I'd like to know is if there are any issues with introducing Powerpath now. * RHEL 2.1 AS * 2.4.9-e.38enterprise * ocfs-2.4.9-e-enterprise-1.0.13-1 * EMC CLARiiON CX600 Thx! ---- Kim Kendall Sr Unix Administrator Inter-Tel, Inc....

On some machines running PowerPath, there''s sometimes issues after an update/upgrade of the PowerPath software. Sometimes the pseudo devices get remapped and change names. ZFS appears to handle it OK, however sometimes it then references half native device names and half the emcpower pseudo device names. So the SA can ea...

That should say below, we are using Powerpath on the CX300's AND the CX600's... ----------------------------------------------------------------------- We are using Powerpath with CX300's and Emulex HBA's, also with OCFS on Red Hat 2.1 AS. Kernel upgrades are the biggest issue that we have, as some of the drivers are depende...

Is anyone using CentOS 4.4 with an EMC Clariion SAN? In particular, I want to know if PowerPath and Naviagent will work on a CentOS 4 system connected to a san using Qlogic or Emulex cards. I tried a couple years ago with Fedora Core 1 or 2, and couldn't get the kernel modules from PowerPath to work since the kernel wasn't the official RHEL one. I'm most interested in Centos4.4/x...

I was curious if someone on this list has performance numbers with and without PowerPath 3.0.3 on RH AS 2.1 Oracle 9i RAC systems with OCFS. I know that there were some concerns with PowerPath intercepting IO's and slowing performance related to OCFS. Appreciate your feedback. Raj

For those customers that are on this list and are using EMC Powerpath or HP Securepath and have performance problems while using ocfs and point to ocfs first. the actual io overhead for an io on ocfs compared to raw, when it's database io is negligable, we don't do any locking, we have about 40000 clockticks of processing from logical to physical offset, not...

Hi, We had received a new EMC storage (Clariion CX4) and the EMC analist has told us that CentOS aren't on their support list, but RHEL are :) Well anybody on the list has a CentOS host talking (iSCSI) with an EMC storage, preferably using the EMC Powerpath software, and can talk about you experience? Or I will need to buy some REHL licenses ? I'll put my hands on it only next week, but I'm trying to get prepared to do it :) Thanks in advance, Antonio. -- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-...

...dev/sdad1 and /dev/sdk1. But when I tried to mount this ocfs filesystem by label, it gave me the following error. # mount -L data13 /oradata/data13 mount: the label data13 occurs on both /dev/emcpowerp1 and /dev/sdad1 - not mounted Is this a bug? Or does it mean OCFS label would not work for EMC PowerPath devices? Thanks, Hai # powermt display dev=emcpowerp Pseudo name=emcpowerp CLARiiON ID=APM00035004439 [WPProd] Logical device ID=60060160F1D91200FC9395794415DA11 [LUN 619] state=alive; policy=CLAROpt; priority=0; queued-IOs=0 Owner: default=SP A, current=SP A ======================================...

We are running Linux AS 2.1 .27 enterprise on an EMC CX400 SAN with ocfs version enterprise 1.0.9-12. After formatting the partitions the response from the filesystem is very slow during either read or writes. Even worse, while we can create a directory, we are unable to delete the directory after it has been created. Every time any directory is attempted to be removed with rmdir we get a

I've been reading this group for a while and I've noticed a variety of comments regarding running OCFS on top of path-management packages such as EMC's Powerpath, and it brought to mind a problem I've been having. I'm currently testing a six-node cluster connected to a Hitachi 9570V SAN storage array, using OCFS 1.0.12. I have six LUNs presented to the hosts using HDLM, Hitachi's eqivalent of Powerpath. Here's the problem: I've b...

...d to post this question to the mailing list because it needs ZFS knowledge to be solved. The situation is like this: I have a blade server that boots from a LUN, which has no additional storage or internal disk but that LUN used to boot. MPxIO works perfectly; but the management wants to use EMC PowerPath, because the company already has an investment on licensing. After disabling MPxIO, rebooting and installing PowerPath 5.3 for Solaris 10 x86; the root pool is using only one of the paths to the array instead of the PowerPath pseudo device name, as it should: pool: rpool state: ONLINE scrub:...

I just installed EMC PowerPath 5.0.0 and Navisphere Agent and CLI on a CentOS 4.4/x86_64 system. When I try to start naviagent, I get the error below. Before upgrading to CentOS4.4, this same system had RHEL3 ES for x86_64 on it, and the same problem was encountered. I spent weeks going back and forth with EMC tech support, but...

...issue .. i import the zpool and it shows pool imported correctly but after few seconds when i issue command zpool list .. it does not show any pool and when again i try to import it says device is missing in pool .. what could be the reason for this .. and yes this all started after i upgraded the powerpath abcxxxx # zpool import pool: emcpool1 id: 5596268873059055768 state: ONLINE status: The pool is formatted using an older on-disk version. action: The pool can be imported using its name or numeric identifier, though some features will not be available without an explicit ''...

Dear List Users- IHAC planning storage layout and is looking for the following MAX_LUNS size limit on RHEL 3.0 and 4.0. Details are below. Customer database size is estimated to grow to 5 TB and worries that they will not be able to present enough devices to the system if used with EMC powerpath and RHEL 3.0 max_lun limitations. I have advised on using OCFS or ASM as this is a 10g Database to avoid raw device limitations. In any case, answer to "max_luns" should appease the customer. Any info will be appreciated. Please copy me on your replies to the group. Thanks, -sj...

Hi, I just deploy the ZFS on an SAN attach disk array and it''s working fine. How do i get dual pathing advantage of the disk ( like DMP in Veritas). Can someone point to correct doc and setup. Thanks in Advance. Rgds Vikash Gupta This message posted from opensolaris.org

...re goes: Try installing the "device-mapper-multipath" package and follow the documentation below - residing at the powerlink.emc.com site: "Native Multipath Failover Based on DM-MPIO for v2.6.x Linux Kernel and EMC(r) Storage Arrays" When configured this works just as good as PowerPath. This works great on RHEL / CentOS 5 Daniel On 7/5/07, Luis Freitas <lfreitas34@yahoo.com> wrote: > > > I always get these annoying messages with EMC storages. > > They seem to have a unusable lun that appears for the operating system > and the kernel keeps trying...

Specs: Oracle 9.2.0.4 OS is Redhat AS2.1 ocfs-2.4.9-e-summit-1.0.12-1 ocfs-tools-1.0.10-1 ocfs-support-1.0.10-1 ocfs-2.4.9-e-enterprise-1.0.12-1 Shared Storage: Dell/EMC CX600 naviagentcli-6.19.0.4.14-1.noarch.rpm PowerPath 4.4 Post navisphere shuttingdown, The ocfs service attempts to stop Then I get errors: Ocfs:Unmounting drive on [privatenic] 7959 err: unable to sendmsg error: -101, Linux/ocfsipc.co, 394 Then a status message -999 I'll try to get the officcial message, but it's not listed in /var/log/me...

Hello, I am trying to configure ZFS with IBM sdd. IBM sdd is like powerpath, MPXIO or VxDMP. Here is the error message when I try to create my pool: bash-3.00# zpool create tank /dev/dsk/vpath1a warning: device in use checking failed: No such device internal error: unexpected error 22 at line 446 of ../common/libzfs_pool.c bash-3.00# zpool create tank /dev/dsk/vpath1c...