similar to: Problem with OCFS and EMC Snapshots

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

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 used this command to create volume label on OCFS: mkfs.ocfs -F -b 128 -L data13 -m /oradata/data13 -u oracle -g dba -p 0775 /dev/emcpowerp1 emcpowerp is composed of /dev/sdad and /dev/sdk. It seems the above command created the same labels for /dev/emcpowerp1, /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

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,

I am starting to see a few issues with OCFS and 9.2.0.3 RAC on redHat Linux AS 2.1. Wondering if there is anyone out there experiencing similar issues... a few pointers to the issues.. 1. OCFS read/write performance is way lower than a read/write to a raw device.. i can give you some comparison numbers.. 2. Writes to shared disk with ocfs would get locked up by one server.. it doesnt have to

I am starting to see a few issues with OCFS and 9.2.0.3 RAC on redHat Linux AS 2.1. Wondering if there is anyone out there experiencing similar issues... a few pointers to the issues.. 1. OCFS read/write performance is way lower than a read/write to a raw device.. i can give you some comparison numbers.. 2. Writes to shared disk with ocfs would get locked up by one server.. it doesnt have to

OEL 5, OCFS 1.4, using EMC Power Path for multi pathing. I want t mount the OCFS2 file system on the emc power path device. I can mount by UUID, and not have to worry about persistent bindings across nodes. But how do I make sure when it mounts by UUID , that the pwoer path device is used. Any help will be much appreciated. Thanks -- Sridhar Avantsa savantsa at gmail.com -------------- next

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 dependent on modules built for specific kernels, and if your

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,

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 ? :) Greets Dominik

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 easily be confused. Is there a way to tell ZFS which device names

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

I?ve an issue related to Oracle 10g RAC. I?ve 2 node cluster each being Dell 2850 Server with RHEL 4.0 I?ve EMC CX300 SAN storage with following partitions /orasoft 10 Gb OCFS2 File system /oracrs 2 Gb OCFS2 File system /orabackup 100 Gb OCFS2 File system The datafiles are on ASM which is not directly visible in OS.

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 My system was originally installed by Dell. Since then I've upgraded the OCFS and a few other pkgs. But ever since the beginning the ocfs drives mounted on boot.

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

Just wanted to see if anyone has had the opportunity to expand a MetaLUN on an EMC CLARiiON. The O/S is Red Hat AS 2.1 running Oracle 9i RAC (4 node). The filesystems are a series of LUNs combined into a MetaLUN that is formatted and mounted as OCFS. We are ready to expand a MetaLUN, but wanted to see if anyone has done this "on the fly", ie: Expand the MetaLUNs while the systems are

Hi, is it possible and safe to use more than one RAC-Cluster using OCFS in the same LAN? I'm considering to following setup: a 2-node production and a 2-node test system, the production data is stored in an EMC Symmetrix and for the test-system the production data is copied once to a BCV disk internally. This will give me an new independant copy of the production disk with the same contents,

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

# uname -r 2.4.21-20.ELsmp [root@hp2620-2 root]# rpm -qa | grep ocfs ocfs-tools-1.0.10-1 ocfs-support-1.0.10-1 ocfs-2.4.21-EL-1.0.13-1 [root@hp2620-2 root]# /sbin/load_ocfs /sbin/insmod ocfs node_name=hp2620-2-eth1 ip_address=10.1.2.101 cs=1913 guid=8D65C7CEECF9EBE638BD0013215BD6E9 comm_voting=1 ip_port=7000 insmod: ocfs: no module by that name found load_ocfs: insmod failed [root@hp2620-2 root]#

Can I create an OCFS 2 filesystem over a ASM volume to store datafiles? Thanks! Roger---