Large FOSS filesystems, was Re: [Beowulf] 512 nodes Myrinet cluster Challanges
landman at scalableinformatics.com
Thu May 4 11:55:24 PDT 2006
Michael Will wrote:
> The question is:
> Can you use LVM to do mirroring and striping at the same time, or do you
> need to use
> software raid1 below LVM for that?
I havent tried this recently.
> When having multiple chassis, the risk is that a chassis goes down and
> that part of a striped
> LVM can affect the whole filesystem, going offline and if the drives
> became corrupted for some
> reason, it can have corrupted all of your data. If you used mirroring
> between two physical volumes
> on two enclosures and then stripe across those mirrors, you could
> mitigate that.
I believe thats what I said. Make stripes across RAID1 mirrors. AKA
RAID10. My apologies if I was unclear.
Joseph Landman, Ph.D
Founder and CEO
Scalable Informatics LLC,
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