I'd be extremely careful, combining lvm cluster with ocfsv2 cluster and with
lvm snapshots.
----- Original Message -----
From: "Jordi Prats" <[EMAIL PROTECTED]>
To: "Alexei_Roudnev" <[EMAIL PROTECTED]>
Cc: "Riccardo Paganini" <[EMAIL PROTECTED]>;
<[email protected]>
Sent: Monday, October 08, 2007 1:01 PM
Subject: Re: [Ocfs2-users] OCF2 and LVM
Hi,
You could use clvm (cluster LVM): http://sources.redhat.com/cluster/clvm/
to do snapshots on a clustered environment.
You need to setup the RedHat cluster infrastructure, but this shouldn't be
a problem.
I agree that rman is the correct solution to oracle backups :)
regards,
Jordi
Alexei_Roudnev wrote:
I dont knoiw any lvm technology which can make a snapshort in clustered
environment, so better forget this idea.
Recommended method to do oracle backups is rman. Any violation of this
brings you into the swamp of possible oracle bugs.
----- Original Message ----- From: "Jordi Prats" <[EMAIL PROTECTED]>
To: "Riccardo Paganini" <[EMAIL PROTECTED]>
Cc: <[email protected]>
Sent: Monday, October 08, 2007 11:20 AM
Subject: Re: [Ocfs2-users] OCF2 and LVM
Hi,
I'm not an expert on oracle, but I don't think using a snapshot is a
recommended backup solution. You should use data pump or exp utilities
to backup your database.
To extend your fs, tune2fs.ocfs2 requires you to umount it, according to
it's man page:
==
tunefs.ocfs2 is used to adjust OCFS2 file system parameters on disk. In
order to prevent data loss, tunefs.ocfs2 will not perform any action
on the specified device if it is mounted on any node in the cluster.
This tool requires the O2CB cluster to be online.
==
The concrete command should be: tune2fs.ocfs2 -S /dev/LVM_volume
I don't know if there's any way to extend it without umounting it.
If you want to extend your fs without umounting it you should use ASM
instead of OCFS2.
regards,
Jordi
Riccardo Paganini wrote:
Does anybody knows if is there a certified procedure in to backup a RAC
DB 10.2.0.3 based on OCFS2 ,
via split mirror or snaphots technology ?
Using Linux LVM and OCFS2, does anybody knows if is possible to
dinamically extend an OCFS filesystem,
once the underlying LVM Volume has been extended ?
Thanks in advance
Riccardo Paganini
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