David A. Woyciesjes wrote:
Toby Bluhm wrote:
Russ wrote:
...
I would like to set up raid 10 instead, but it doesn't seem like its
supported by my mdadm - the proper personalities are not loaded.
How do I get the raid10 personality in there?
I don't believe there's a raid10 personality. What you would do is
build your 2 stripe sets, then mirror those striped md's...
Actually, you have it backwards. Build 2 separate mirror sets,
then make a stripe set of those 2 mirrors.
Here's why: In your setup, if one drive fails, that whole stripe
set is down for the count. You're then running on only 2 drives, no
redundancy. The other way, if one drive goes, the other drive in that
mirror set keeps going; you're still using 3 drives.
Hopefully I explained it clearly... :)
I have tried this previously, but it's just not possible from anaconda.
The weird thing is that there is a raid 10 personality... at least
supposed to be http://cgi.cse.unsw.edu.au/~neilb/01093607424
I think that's the guy that mantains mdadm, and he's talking about
version 1.7 of mdadm, while I have 2.5.4.
I can go to shell from anaconda, and build the 2 raid 1 sets and put the
raid 0 on top of it, but anaconda won't see the raid0. So there's no
way to install to it.
I do have a SIL3114 chipset, and I think it's supposed to be supported
by device mapper. When I go to rescue mode, I see it loading the driver
for SIL3112, but nothing appears under /dev/mapper except control. Are
there instructions somewhere on getting it to use my controller's raid?
Russ
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