Re: Problem booting from SW RAID 1

Subject: Re: Problem booting from SW RAID 1

From: Brent Mitchell <email@hidden>

Date: Wed, 14 Mar 2007 15:57:41 -0500

Delivered-to: email@hidden

I'll try and be less vague:

RAID 1 as in two mirrored drives

The RAID is v2 created with Disk Utility. I've recreated the RAID once as troubleshooting, but both times built with Disk Utility under 10.4.7. It is formatted as Extended & Journaled.

As for symptoms, if the install on the mirror is the only one available the fans work their way up to full RPMs. I'm assuming it is sitting at a flashing ? but it is headless. It will attempt to boot from any other boot-able device including netboot.

No errors given along the way.

NVRAM settings:

boot-args srv=1

boot-device hd:,\\tbxi

I have reset NVRAM, but no help. I also just noticed the following lines written to syslog when attempting to set the mirror as the boot device in system prefs:

Mar 14 13:14:02 MyServer diskarbitrationd[57]: disk0s3 hfs 3391641B-2431-3F99-A77D-397F417615F1 Boot OSX /Volumes/Boot OSX

Mar 14 13:14:02 MyServer diskarbitrationd[57]: disk1s3 hfs 3391641B-2431-3F99-A77D-397F417615F1 Boot OSX /Volumes/Boot OSX

where disk0 & disk1 are the two drive in the RAID. And Boot OSX is not the name of the mirror. The correct name should be "ServerHD."

Hope this helps and please let me know if there is any other info I could provide to help diagnose.

Brent Mitchell : System Analyst at Texas School for the Deaf
contact | email@hidden - 512.462.5642

On Mar 14, 2007, at 10:13 AM, Dan Shoop wrote:

At 1:45 PM -0500 3/13/07, Brent Mitchell wrote:

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Most of our servers boot from a mirror so getting this setup is nothing new, but I'm in the process of repurposing one of our G5 xServes and it refuses to boot from the mirror.

Could you be more vague? I'm out of goat entrails and the tea leaves are being used... for my tea.

Normally when people try to troubleshoot they like to have lost of pertinent and specific information. How the mirror is set up, off what devices, how it was created, ... and then they want errors or messages that you get, signs, symptoms, etc... because these facts are what you use to diagnose a problem.

What, for instance, might be the nvram boot-device and boot-args?

What happens when you try and boot?

Has anyone else experienced these problems or have any other tips?

Yes: using RAID v1 sw is rather silly in Tiger. Use RAID v2 like Tiger expects. Does that work?

Or perhaps by "SW RAID 1" you didn't mean v1 of the RAID sw but that you were using a RAID1? Who knows.
--

-dhan

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Dan Shoop AIM: iWiring
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email@hidden http://www.iwiring.net/
1-714-363-1174

"The wise man doesn't give the right answers, he poses the right
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References:

>Problem booting from SW RAID 1 (From: Brent Mitchell <email@hidden>)

>Re: Problem booting from SW RAID 1 (From: Dan Shoop <email@hidden>)