[Lustre-discuss] Which partition to choose for mkfs.lustre
Brian J. Murrell
Brian.Murrell at Sun.COM
Mon Apr 27 05:34:01 PDT 2009
On Sat, 2009-04-25 at 16:44 +0530, Gnanasekar Loganathan wrote:
> Hi Brain,
Hi,
> [root at SF_02 ~]# rpm -qa | grep e2fs
> e2fsprogs-1.35-12.17.el4
> e2fsprogs-devel-1.35-12.17.el4
> e2fsprogs-1.40.11.sun1-0redhat
> e2fsprogs-1.35-12.17.el4
Why do you have 3 e2fsprogs packages installed? How did you manage to
do that? If you used "rpm -i" rpm should have complained that you
already had e2fsprogs installed and if you used "rpm -U" it should have
installed e2fsprogs-1.40.11.sun1-0redhat and removed
e2fsprogs-1.35-12.17.el4.
> Device Boot Start End Blocks Id System
> /dev/sda1 * 2550 5000 19687657+ 83 Linux
> /dev/sda2 5001 5383 3076447+ 82 Linux swap
>
>
> I have only a 2 partitions on my system.
Yes. /dev/sda1 and /dev/sda2
> If i run the command
>
>
> 'mkfs.lustre --mdt --mgs --fsname=large-fs /dev/sda'
>
>
> the system will crash/corrupt.
Of course it will. You are overwriting /dev/sda1 and /dev/sda2 (which
are your system and swap devices) doing this. If you intend this
machine to be an MDS, you need to format some other
(than /dev/sda, /dev/sda1 or /dev/sda2) device. I think perhaps you are
not quite understanding the architecture of Lustre. I think a review of
the manual and probably the wiki will help you understand what the
components of a Lustre system are and how to install them.
b.
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