Welcome to the most active Linux Forum on the web.
Go Back > Forums > Linux Forums > Linux - Hardware
User Name
Linux - Hardware This forum is for Hardware issues.
Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?


  Search this Thread
Old 09-12-2008, 08:44 PM   #1
Registered: Jan 2005
Location: Dallas/TX
Distribution: OpenBSD/FreeBSD/Debian/Mac OS X
Posts: 40

Rep: Reputation: 15
CentOS 4.3 LInux Raid 1 Losing OS Raid member

Hey folks,

This is strange to me.
I have a software sata raid 1 with two slices.
Real basic stuff.

/dev/md0 = os
/dev/md1 = everything else

Every once in a while /dev/sda1 drops out of /dev/md0.
I add it back and it jams along for a few more months and then suddenly it drops back out.

I don`t get it. /dev/sda2 never has a problem.
I can`t find any physical errors.
Any ideas?

Thanks in advance.

Old 09-13-2008, 11:01 PM   #2
LQ Guru
Registered: Jan 2002
Posts: 6,042

Rep: Reputation: Disabled
Hard drives can fail from vibrations, power fluctuations, and errors during automatic diagnostics. Other problems like inconsistent data in cache can make drives fail in a RAID array.

/dev/sda2 is just a partition. It could be the partition table is going.

You may want to get an add-on for your controller that uses a Silicon Image 4723 chip that does hardware RAID-1. The following has the chip that should work with your controller and with Linux.

If that is not feasible, I suggest activate logging for the controller and mdadm.


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
LXer: Tutorial: Linux RAID Smackdown: Crush RAID 5 with RAID 10 LXer Syndicated Linux News 0 08-14-2008 11:20 PM
LXer: Benchmarking hardware RAID vs. Linux kernel software RAID LXer Syndicated Linux News 0 07-15-2008 03:50 PM
LXer: Linux RAID Smackdown: Crush RAID 5 with RAID 10 LXer Syndicated Linux News 0 02-26-2008 09:40 PM
Can I switch RAID controller cards without losing data? BrianK Linux - Hardware 2 10-04-2004 09:14 PM
does linux support the sata raid and ide raid in k7n2 delta ilsr? spyghost Linux - Hardware 10 04-16-2004 05:27 AM > Forums > Linux Forums > Linux - Hardware

All times are GMT -5. The time now is 08:20 PM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration