 | | | RAC File System Questions | RAC File System Questions 2007-09-04 - By Randy Johnson
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I'd recommend ASM. There is safety in numbers and that is where the numbers
are. I also get the feeling that ASM is Oracle's strategic direction for
shared storage. I know I'm going to take some flak for this but I've seen
some flakyness with OCFS & OCFS2. Creating a file, putting data in it on one
node, the contents aren't immediately visible on from the other node. Stuff
like that. ASM is solid as a rock. Especially 10gR2.
__ __
From: oracle-l-bounce@(protected) [mailto:oracle-l-bounce@(protected)]
On Behalf Of Jeremy Schneider
Sent: Monday, September 03, 2007 9:53 PM
To: rama.ari@(protected)
Cc: oracle-l@(protected)
Subject: Re: RAC File System Questions
ASM might be a good fit for you.
The only filesystem you can use for RAC on linux is OCFS. I've setup
clusters with the OCR and quorum on both filesystems and raw devices and to
me the only difference is what you're more comfortable with.
-Jeremy
On 9/3/07, HYPERLINK "mailto:rama.ari@(protected)"rama.ari@(protected)
<HYPERLINK "mailto:rama.ari@(protected)"rama.ari@(protected) > wrote:
We are in the process of setting up Oracle RAC on Redhat Linux.
I need RAC expert's comments for the following questions.
1) What type of filesystem are you using for Oracle datafiles?
2) Are your implementation(s) using raw partitions or a cluster file system
for the OCR and voting disks?
3) If using raw partitions with Linux can you describe any challenges you
had with device discovery?
Thanks,
Rama
This message is for the designated recipient only and may contain
privileged, proprietary, or otherwise private information. If you have
received it in error, please notify the sender immediately and delete the
original. Any other use of the email by you is prohibited.
--
Jeremy Schneider
Chicago, IL
HYPERLINK
"http://www.ardentperf.com/category/technical"http://www.ardentperf.com/cate
gory/technical
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<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=546361201-05092007>I'd recommend ASM. There is safety in numbers and that
is where the numbers are. I also get the feeling that ASM is Oracle's strategic
direction for shared storage. I know I'm going to take some flak for this but
I've seen some flakyness with OCFS & OCFS2. Creating a file, putting data
in
it on one node, the contents aren't immediately visible on from the other node.
Stuff like that. ASM is solid as a
rock. Especially 10gR2. </SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff
size=2></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff
size=2></FONT> </DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> oracle-l-bounce@(protected)
[mailto:oracle-l-bounce@(protected)] <B>On Behalf Of </B>Jeremy
Schneider<BR><B>Sent:</B> Monday, September 03, 2007 9:53 PM<BR><B>To:</B>
rama.ari@(protected)<BR><B>Cc:</B> oracle-l@(protected)<BR><B>Subject:</B>
Re: RAC File System Questions<BR></FONT><BR></DIV>
<DIV></DIV>ASM might be a good fit for you.<BR><BR>The only filesystem you can
use for RAC on linux is OCFS. I've setup clusters with the OCR and quorum
on both filesystems and raw devices and to me the only difference is what you
're
more comfortable with. <BR><BR>-Jeremy<BR><BR><BR>
<DIV><SPAN class=gmail_quote>On 9/3/07, <B class=gmail_sendername><A
href="mailto:rama.ari@(protected)">rama.ari@(protected)</A></B> <<A
href="mailto:rama.ari@(protected)">rama.ari@(protected) </A>>
wrote:</SPAN>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; BORDER-LEFT: rgb(204,204
,204) 1px solid">
<DIV lang=EN-US vlink="purple" link="blue">
<DIV>
<P><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">We are in the process of setting
up Oracle RAC on Redhat Linux.</SPAN></FONT></P>
<P><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"
>I
need RAC expert's comments for the following questions.</SPAN></FONT></P>
<P><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">1) What type of filesystem are
you
using for Oracle datafiles?</SPAN></FONT></P>
<P><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">2) Are your implementation(s)
using raw partitions or a cluster file system for the OCR and voting
disks?</SPAN></FONT></P>
<P><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">3) If using raw partitions with
Linux can you describe any challenges you had with device
discovery?</SPAN></FONT></P>
<P><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P><FONT face=Arial color=blue size=1><SPAN
style="FONT-SIZE: 8pt; COLOR: blue; FONT-FAMILY: Arial">Thanks,</SPAN></FONT>
<FONT
color=blue size=1><SPAN style="FONT-SIZE: 8pt; COLOR: blue"></SPAN></FONT></P>
<P><B><FONT face=Tahoma color=blue size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Tahoma"
>Rama
</SPAN></FONT></B><FONT color=silver><SPAN lang=FR
style="COLOR: silver"></SPAN></FONT></P>
<P><FONT face="Book Antiqua" size=2></FONT> </P></DIV>
<DIV>
<P></P>
<P style="FONT-SIZE: x-small; FONT-FAMILY: Arial,Sans-Serif">This message is
for the designated recipient only and may contain privileged, proprietary, or
otherwise private information. If you have received it in error, please
notify
the sender immediately and delete the original. Any other use of the email by
you is prohibited. </P></DIV></DIV></BLOCKQUOTE></DIV><BR><BR clear=all><BR>-
-
<BR>Jeremy Schneider<BR>Chicago, IL<BR><A
href="http://www.ardentperf.com/category/technical">http://www.ardentperf.com
/category/technical</A>
<BR>
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