Solved

Native RAID

Posted on 2004-04-05
4
376 Views
Last Modified: 2010-04-20

  I am using REDHAT LINUX 9 on my PC. There is an onboard RAID Controller on my PC-- Promise PDC20265 ( Fasttrak 100). Redhat 9 detects it but there is no RAID function. I have to use RAID-1 (mirror) But there is no driver available for Redhat 9. I installed Redhat 9 and then created the mirror array from the BIOS with 2 harddisks( hde and hdg). But the mirroring is not taking place after that. (I suppose it should work normally when we replace the source harddisk with the mirror harddisk if mirroring is successful)
                 So my question is, how can we try configuring native RAID. Will it work if we change the parttions from /dev/hde to /dev/ataraid/d0p in lilo and /etc/fstab ?? please provide me a solution for this...

 Thanks and Regards
0
Comment
Question by:mshajan
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
4 Comments
 
LVL 12

Accepted Solution

by:
stefan73 earned 25 total points
ID: 10756249
Hi mshajan,
I have the same problem, my two RAID0 drives are the only HD drives in my system.

It's a problem of booting: You need RAID to read the kernel image and the kernel image to read RAID :-|

The only way around this could be to boot from a non-RAID device, such as an additional HD, CD, or anything else.

Cheers,
Stefan
0
 
LVL 12

Expert Comment

by:stefan73
ID: 10756258
mshajan,
Oops. You mirroring. My mistake. Mirroring shouldn't be a problem.

Stefan
0
 
LVL 17

Expert Comment

by:owensleftfoot
ID: 10757873
I dont have that much experience with raid. But the little I do know suggests that you have to initialise the drives and create the array in the controller bios before you actually install redhat.
0
 
LVL 1

Expert Comment

by:djluff
ID: 10898321
I haven't used a Promise RAID controller, but I have used others.

When using hardware RAID as you are (rather than the software RAID which is done by Linux itself), Linux doesn't need to know anything about the RAID setup. You setup the RAID array(s) using the card's config utility BEFORE installing Linux. The array(s) then each appear to Linux as a single drive. The only catch is that Linux needs to recognise the disk controller.

It sounds like you have installed Linux on one of the disks, so it must be able to use the card OK. But you've then gone into the RAID BIOS and configured RAID. I'm surprised it boots?
0

Featured Post

Enroll in July's Course of the Month

July's Course of the Month is now available! Enroll to learn HTML5 and prepare for certification. It's free for Premium Members, Team Accounts, and Qualified Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The purpose of this article is to fix the unknown display problem in Linux Mint operating system. After installing the OS if you see Display monitor is not recognized then we can install "MESA" utilities to fix this problem or we can install additio…
Join Greg Farro and Ethan Banks from Packet Pushers (http://packetpushers.net/podcast/podcasts/pq-show-93-smart-network-monitoring-paessler-sponsored/) and Greg Ross from Paessler (https://www.paessler.com/prtg) for a discussion about smart network …
Learn several ways to interact with files and get file information from the bash shell. ls lists the contents of a directory: Using the -a flag displays hidden files: Using the -l flag formats the output in a long list: The file command gives us mor…
This demo shows you how to set up the containerized NetScaler CPX with NetScaler Management and Analytics System in a non-routable Mesos/Marathon environment for use with Micro-Services applications.
Suggested Courses

623 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question