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