topic Re: Scan new Disk device in Operating System - Linux

Scan new Disk device

Jack Fan — Thu, 14 Sep 2006 22:25:00 GMT

All,

I have a RHEL 3 AS server with HBA card, now I assign a SAN vdisk device to this server and want to create a new mount point on server.

Is't possible to scan new SAN vdisk device and fdisk it without reboot server on RHEL 3 AS? How?

Thanks,
Jack Fan

Re: Scan new Disk device

Jean-Yves Picard — Fri, 15 Sep 2006 08:43:10 GMT

Hello,

have a cat /proc/scsi/qla2300/0 to see if host see devices.
(you have to replace qla2300 by you actual driver.)

maybe you have something like /opt/hp/hp_fibreutils/hp_rescan ?

Jean-Yves Picard

Re: Scan new Disk device

Ivan Ferreira — Fri, 15 Sep 2006 10:15:12 GMT

The command hp_rescan can do that, it's included in the fibreutils package.

You can also try with the rescan-scsi-bus.sh shell script, but normally, hp_rescan is better.

http://www.garloff.de/kurt/linux/rescan-scsi-bus.sh

Re: Scan new Disk device

Justin_99 — Fri, 15 Sep 2006 10:15:41 GMT

Have had success using this script.

http://www.garloff.de/kurt/linux/rescan-scsi-bus.sh

Re: Scan new Disk device

sathish kannan — Fri, 15 Sep 2006 22:54:05 GMT

Hi Jack,

What's your HBA type?

With Qlogic card yes you can but not guranteed with out reboot. The method is almost like reboot means you have to unload the module.

Regards
Sathis

Re: Scan new Disk device

Delrish — Sun, 17 Sep 2006 23:45:50 GMT

First you should do hp_rescan. After this step your Linux will find new unpartition disks (LUNs).
Then you should make required partitions on disks with "fdisk" command.
And finally you should execute partprobe command.
partprobe is a program that informs the operating system kernel of partition table changes, by requesting that the operating system re-read the partition table.

Alireza

Re: Scan new Disk device

Jack Fan — Mon, 18 Sep 2006 00:35:15 GMT

All,
My problem is solved.
Thanks,

Jack Fan