RE: ocfs2/oracleasm on Red Hat 4
- From: "QuijadaReina, Julio C" <QuijadJC@xxxxxxxxxxxxxxx>
- To: Matthew Zito <mzito@xxxxxxxxxxx>, "rprabha01@xxxxxxxxx" <rprabha01@xxxxxxxxx>
- Date: Thu, 28 May 2009 14:53:04 -0400
Yes, I much rather use ASM to handle this kind of stuff for me.
Thanks,
Julio
From: Matthew Zito [mailto:mzito@xxxxxxxxxxx]
Sent: Thursday, May 28, 2009 12:46 PM
To: rprabha01@xxxxxxxxx; QuijadaReina, Julio C
Cc: oracle-l@xxxxxxxxxxxxx
Subject: RE: ocfs2/oracleasm on Red Hat 4
Udev is nice, but it can be complicated to configure, and changes made on the
storage array side can cause sudden and horrifying udev issues. For example,
by default udev uses scsi unique IDs as identifiers for individual devices. If
those IDs change, your device mappings will change, or cease to exist
altogether.
Udev definitely has its place, but nothing beats an application-level disk
signature for guaranteeing consistency.
Thanks,
Matt
________________________________
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On
Behalf Of Rajeev Prabhakar
Sent: Thursday, May 28, 2009 12:06 PM
To: QuijadJC@xxxxxxxxxxxxxxx
Cc: oracle-l@xxxxxxxxxxxxx
Subject: Re: ocfs2/oracleasm on Red Hat 4
Hello Julio,
There is always the "udev" option for device management. This means more work
at the
sysadmins end.
-Rajeev
On Thu, May 28, 2009 at 8:35 AM, QuijadaReina, Julio C
<QuijadJC@xxxxxxxxxxxxxxx<mailto:QuijadJC@xxxxxxxxxxxxxxx>> wrote:
Thanks Alan,
What you say is interesting. We are a RAC shop and I have always used oracleasm
tools to create/delete ASM disks for SAN shared storage before or after I use
them for an ASM instance. Maybe it's just my ignorance, but is there another
way to do that without oracleasm?
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