[Lustre-discuss] Configuration of lustre FS on single node

[ashok bharat bayana]

Hello,
I successfully build lustre(1.6.4.2) on my system for a patchless client But I dont know how to proceed in configuring the file system.

I'm trying to build all MDS,client and MDT's on a single node.
>From the tutorials I came to know that 

First, create an MDT for the "spfs" file system that uses the /dev/sda disk. This MDT also acts as the MGS for the site.

$ mkfs.lustre --fsname spfs --mdt --mgs /dev/sda 

But by triggering this command my system crashed in which the whole data is lost and again I need to install the OS.
I want help in proceeding of mounting a lustre file system.

Thanks and Regards,
Ashok Bharat

-----Original Message-----
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Sent: Wed 2/27/2008 10:30 PM
To: lustre-discuss at lists.lustre.org
Subject: Lustre-discuss Digest, Vol 25, Issue 56
 
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Today's Topics:

   1. Multiple NICs per OST (Joshua Bower-Cooley)
   2. obd error on MGS/MDT node (Jeremy Mann)


----------------------------------------------------------------------

Message: 1
Date: Tue, 26 Feb 2008 11:55:19 -0800
From: Joshua Bower-Cooley <jbowercooley at lcogt.net>
Subject: [Lustre-discuss] Multiple NICs per OST
To: lustre-discuss at lists.lustre.org
Message-ID: <200802261155.19907.jbowercooley at lcogt.net>
Content-Type: text/plain;  charset="utf-8"

Hi-
I've had lustre running happily for some time over a single 10g ethernet NIC 
per node. After switching to dual 10g and creating a new filesystem 
(1.6.4.2), I'm seeing nothing but keep-alive packets with bad checksums.

What is the current "correct" way to do this now? The manual suggest not using 
bonding, but several list postings now reccommend it. Without bonding, do I 
need to have my 2 switches stacked, or will Lustre recognize the division in 
my subnet?

LNET module options I've tried are:
1) networks="tcp0(eth2,eth3)"
2) ip2nets="tcp(eth2,eth3); tcp(eth2) 10.9.[1-4].*; tcp(eth3) 10.9.[5-8].*;"
and many other variations

All other services are functional on both interfaces.

Thanks in advance,
J Bower-Cooley
Scientific Systems Engineer
Las Cumbres Observatory Global Telescope


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Message: 2
Date: Wed, 27 Feb 2008 09:50:08 -0600 (CST)
From: "Jeremy Mann" <jeremy at biochem.uthscsa.edu>
Subject: [Lustre-discuss] obd error on MGS/MDT node
To: lustre-discuss at lists.lustre.org
Message-ID:
	<62901.24.173.62.147.1204127408.squirrel at biochem.uthscsa.edu>
Content-Type: text/plain;charset=iso-8859-1

Today we are starting to see obd_change_cbdata errors on our MGS/MDT node.
What does this error mean?

Version of lustre and kernel is:

2.6.9-42.0.10.EL_lustre-1.6.0.1smp X86_64

LustreError: 65:0:(obd_class.h:1171:obd_change_cbdata()) Skipped 1
previous similar message
LustreError: 65:0:(obd_class.h:1171:obd_change_cbdata())
obd_change_cbdata: NULL export
LustreError: 65:0:(obd_class.h:1171:obd_change_cbdata()) Skipped 1
previous similar message
LustreError: 65:0:(obd_class.h:1171:obd_change_cbdata())
obd_change_cbdata: NULL export
LustreError: 65:0:(obd_class.h:1171:obd_change_cbdata()) Skipped 2
previous similar messages
LustreError: 65:0:(obd_class.h:1171:obd_change_cbdata())
obd_change_cbdata: NULL export
LustreError: 65:0:(obd_class.h:1171:obd_change_cbdata()) Skipped 4
previous similar messages
LustreError: 65:0:(obd_class.h:1171:obd_change_cbdata())
obd_change_cbdata: NULL export
LustreError: 65:0:(obd_class.h:1171:obd_change_cbdata()) Skipped 5
previous similar messages
LustreError: 65:0:(obd_class.h:1171:obd_change_cbdata())
obd_change_cbdata: NULL export
LustreError: 65:0:(obd_class.h:1171:obd_change_cbdata()) Skipped 1
previous similar message

-- 
Jeremy Mann
jeremy at biochem.uthscsa.edu

University of Texas Health Science Center
Bioinformatics Core Facility
http://www.bioinformatics.uthscsa.edu
Phone: (210) 567-2672



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