Internal disks and SAN detection in BL25p

Barry Lowe — Thu, 14 Sep 2006 06:36:57 GMT

I have two blades which I believe to have configured exactly the same, having done them both myself in the last few days. They have 32-bit RHEL4 U3 installed with PSP 7.52 and are connected to a MSA1000 SAN via fibre channel adapters.

I have two questions relating to the output of fdisk:

1. why is there a difference between the physical architecture of the disks in each server:

Disk /dev/cciss/c0d0: 72.8 GB, 72833679360 bytes
255 heads, 63 sectors/track, 8854 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/cciss/c0d0: 72.8 GB, 72833679360 bytes
255 heads, 32 sectors/track, 17433 cylinders
Units = cylinders of 8160 * 512 = 4177920 bytes

2. why does one server detect partitions on the SAN, when the other doesn't? On one server I have files in /dev called sda, sda1, sda2 etc but the other only has sda and does not report it using 'fdisk -l'

Thanks.

Re: Internal disks and SAN detection in BL25p

Jean-Yves Picard — Fri, 15 Sep 2006 08:45:19 GMT

Hello,

for 2nd question, have you check zonning ?

Jean-Yves Picard

Re: Internal disks and SAN detection in BL25p

Barry Lowe — Mon, 18 Sep 2006 05:04:09 GMT

Thanks for your response. I forgot to mention that the partitions were previously accessible by a 64-bit linux installation on the same two servers.

topic Internal disks and SAN detection in BL25p in Operating System - Linux

Internal disks and SAN detection in BL25p

Re: Internal disks and SAN detection in BL25p

Re: Internal disks and SAN detection in BL25p