Cool. I will give that a try too.<br>Also in my wanderings on the web, I have come across the use fstab.order.<br>Also found this on metalink: in note <font face="helvetica"><strong>471256.1</strong></font><br>In the /etc/fstab.order file put in all the powerpath device names.<br>
<br>My preference would be to go the udev route, if i can get an example on how to set that specfically for EMC pwerPath devices.<br>If you have, could you please share?<br><br>Thanks.<br><br>Will that work too ?<br><br><div class="gmail_quote">
On Wed, Jun 10, 2009 at 1:37 PM, Sunil Mushran <span dir="ltr"><<a href="mailto:sunil.mushran@oracle.com">sunil.mushran@oracle.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
There is another scheme (less elegant but probably quicker to deploy) that<br>
was described in this list by a user.<br>
<br>
As root run blkid. Then edit /etc/blkid.tab and remove all sd devices that<br>
correspond to the emcpp devices. Ensure pp is enabled. Rerun blkid. This<br>
time you should see the pp devices in /etc/blkid.tab. If not, you should be<br>
able to hand edit those device.<br>
<br>
Now mount by label and mount by uuid will mount the pp device.<br>
<br>
Sridhar Avantsa wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="im">
Joel,<br>
Thanks for the reply.<br>
Wondering if you have a sample udev set up using power path on hand that I can use to get going.<br>
<br>
Thanks<br>
<br></div><div><div></div><div class="h5">
On Wed, Jun 10, 2009 at 12:43 PM, Joel Becker <<a href="mailto:Joel.Becker@oracle.com" target="_blank">Joel.Becker@oracle.com</a> <mailto:<a href="mailto:Joel.Becker@oracle.com" target="_blank">Joel.Becker@oracle.com</a>>> wrote:<br>
<br>
On Wed, Jun 10, 2009 at 12:22:03PM -0500, Sridhar Avantsa wrote:<br>
> OEL 5, OCFS 1.4, using EMC Power Path for multi pathing.<br>
><br>
> I want t mount the OCFS2 file system on the emc power path device.<br>
> I can mount by UUID, and not have to worry about persistent<br>
bindings across<br>
> nodes.<br>
> But how do I make sure when it mounts by UUID , that the pwoer<br>
path device<br>
> is used.<br>
><br>
> Any help will be much appreciated.<br>
<br>
There are two things you can do. The first is to not worry,<br>
because PP takes over all devices. That is, if 'sda' and 'sdb'<br>
are two<br>
paths of 'emcpowera', it doesn't matter whether you open /dev/sda1,<br>
/dev/sdb1, or /dev/emcpowera1. PP has hijacked the devices and is<br>
used<br>
in all cases.<br>
Now, a lot of people consider this to be unkosher and wish that<br>
PP didn't hijack the devices. Maybe in the future EMC will change<br>
this.<br>
You can, of course, not worry about it until they do.<br>
The other alternative is to use udev to ensure you have a<br>
device<br>
name that points to the right device. Then you just mount by the<br>
device<br>
name. For example, a udev rule that only triggers on 'emcpower*'<br>
devices, checks that they are ocfs2 volumes, and then creates<br>
/dev/mydisks/<uuid> for them.<br>
<br>
Joel<br>
<br>
--<br>
<br>
Life's Little Instruction Book #396<br>
<br>
"Never give anyone a fruitcake."<br>
<br>
Joel Becker<br>
Principal Software Developer<br>
Oracle<br></div></div>
E-mail: <a href="mailto:joel.becker@oracle.com" target="_blank">joel.becker@oracle.com</a> <mailto:<a href="mailto:joel.becker@oracle.com" target="_blank">joel.becker@oracle.com</a>><div class="im"><br>
Phone: (650) 506-8127<br>
<br>
<br>
<br>
<br>
-- <br>
Sridhar Avantsa<br>
<br>
</div><a href="mailto:savantsa@gmail.com" target="_blank">savantsa@gmail.com</a> <mailto:<a href="mailto:savantsa@gmail.com" target="_blank">savantsa@gmail.com</a>><br>
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</blockquote>
<br>
</blockquote></div><br><br clear="all"><br>-- <br>Sridhar Avantsa<br><br><a href="mailto:savantsa@gmail.com">savantsa@gmail.com</a><br><br>