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RE: EE RAC, RHEL4 and LVM2 support?

From: Kevin Closson <>
Date: Sun, 23 Jul 2006 14:02:35 -0700
Message-ID: <>

The only slogan I can come up with for this is "The land of the free and the brave". Folks, GFS forces you to have a node that does not host RAC instances dedicated to their lock manager.... and then that is a single point of failure...but I hear you can cluster the lock that 4 nodes for 2 node RAC?

All this central lock manager madness is just crazy. There are fully distributed, symetric, resilient, journalled CFS offerings out there. One runs on VMS and the other runs on Linux and Windows. I can tell you where to get the latter :-)

How "free" is that open source stuff afterall?

Reference Metalink 329530.1

>>>I'm trying to avoid using ASM. It works, but I don't like
>>>having to use RMAN to do everything. There are more, but
>>>I'll let it go.
>>>I've looked all over and can't find any references so I
>>>thought I'd check with the list.
>>>I was asked if we could use LVM2 (which is cluster aware) to
>>>manage disks in a RAC cluster.
>>>Instead of adding a new LUN and creating a new file system
>>>"/oraXX", they want to add a new lun to the volume group and
>>>extend it.
>>>the RAC faq says it's not supported because lvm is not
>>>cluster aware, but that's LVM1 and RHEL3.
>>>this is LVM2 and RHEL4.
>>>Does anybody know if it's supported?
>>>RH has notes on lvm2, gfs and RAC. I would hope they would
>>>publish docs on certified configs.
>>>I was also considering OCFS2 and expanding the LUN (i.e.
>>>metalun), but can't find anything on how to extend the
>>>partition. I think they said after growing the LUN, use
>>>tuneocfs to extend the drive, but nothing about the partition.
>>>maybe I'm misreading it.

Received on Sun Jul 23 2006 - 16:02:35 CDT

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