topic Re: add new scsi hot swapable disk in Operating System - Linux

add new scsi hot swapable disk

tom quach_1 — Thu, 17 Jan 2008 06:49:22 GMT

Hi all,

my hp proliant server has 2 disks setup as raid 1 as below.
we install Oracle EL5 on this server. the Oracle linux is up and running. we need to add another scsi disk to disk server.
question:
do i need to restart this server and go to scsi utility ,add the new disk as RAID 0 then boot into linux os.
with out going into HP Smart Array utility to configure it, i could not see the disk at all even it is a hot swappable disk.

Please give me some advice.
Thanks,
Tom

ebs-v:[root]:vi /proc/driver/cciss/cciss0

cciss0: HP Smart Array P400 Controller
Board ID: 0x3234103c
Firmware Version: 4.12
IRQ: 130
Logical drives: 1
Sector size: 2048
Current Q depth: 0
Current # commands on controller: 0
Max Q depth since init: 53
Max # commands on controller since init: 135
Max SG entries since init: 31
Sequential access devices: 0

cciss/c0d0: 146.77GB RAID 1(1+0)

Re: add new scsi hot swapable disk

Ivan Ferreira — Thu, 17 Jan 2008 13:36:49 GMT

You can use Array Configuration Utility to configure the new disk from the O.S. You can use fibreutils (hp_rescan -a) to detect the new devices.

Re: add new scsi hot swapable disk

Steven E. Protter — Thu, 17 Jan 2008 13:40:27 GMT

Shalom

My proliant server? Model please. Accurate answer requires accurate information.

Most host swap servers should be able to detect and partition the new disk without a reboot, though the reboot is frequently more convenient.

Install the disk.

Give it some time to spin up.

fdisk -l
# You should see a new one.

reboot if it doesn't show up.

SEP

Re: add new scsi hot swapable disk

tom quach_1 — Thu, 17 Jan 2008 19:57:40 GMT

Thank-you Ivan and Steven,

i rebooted the server and went in RAID configuration utility and created a RAID for that disk and rebooted the server.
now i could see it with
fdisk -l

Thanks again.
Tom