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Ubuntu - boot degraded RAID5 with OS installed on array

Posted on 2011-03-12
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Last Modified: 2012-05-11
Hey guys,

Is it possible to boot a degraded software RAID5 array when the operating system is installed on the array?

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Question by:ttist25
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Rodney Barnhardt earned 500 total points
ID: 35119282
This can be somewhat problematic. Here is a command I found on a forum that successfully booted a Ubuntu degraded RAID system: sudo mdadm --assemble --run --force /dev/md0 /dev/sd[abdefghij]1

http://ubuntuforums.org/showthread.php?t=854528

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by:ttist25
ID: 35121673
Thanks r.  I went ahead and setup a RAID1 array and successfully degraded and then added a drive to it.  

I'd like to have the faster read times and increased storage capability of RAID5 but what I thought would be greater fault tolerance seems to be more problems than it's worth.  

KISS right?

Thanks again.
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