December 2002
Intermediate to advanced
260 pages
9h 18m
English
Content preview from Managing RAID on LinuxBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Managing Arrays
You can manage arrays using the DAC960/DAC1100 driver’s /proc entry, but its functionality is limited. To manage all aspects of your Mylex controller without bringing down the system, you will also need to use the Mylex Global Array Manager.
/proc/rd
The DAC960/DAC1100 driver uses the /proc/rd directory to report information about the status of Mylex controllers and to provide a user interface for performing some online management functions.
/proc/rd/status provides a simple
interface for determining the status of all Mylex controllers
connected to the system. When all controllers are operating
normally, the status file returns OK:
$ cat /proc/rd/status
OKIf an array is degraded or failed, or a physical disk has failed, /proc/rd/status reports an alert:
$ cat /proc/rd/status
ALERTDetailed status information is provided in controller-specific directories named /proc/rd/cN, where N is the controller number. Each controller subdirectory contains three files: current_status, initial_status, and user_command. Examine current_status using cat or a file pager to view the controller state of a controller and its arrays. A lot of information is displayed. The initial output is similar to what is provided by the controller’s startup banner and is found in the controller configuration menu under EzAssist:
***** DAC960 RAID Driver Version 2.4.11 of 11 October 2001 ***** Copyright 1998-2001 by Leonard N. Zubkoff <lnz@dandelion.com> Configuring Mylex AcceleRAID 352 PCI RAID Controller ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.