<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body bgcolor="#ffffff" text="#000000"> Bruno Wolff III wrote: <blockquote cite="mid20080223140454.GA28413@wolff.to" type="cite"> <pre wrap="">On Fri, Feb 22, 2008 at 19:38:14 -0500, Bill Davidsen <a class="moz-txt-link-rfc2396E" href="mailto:davidsen@tmr.com"><davidsen@tmr.com></a> wrote: </pre> <blockquote type="cite"> <pre wrap="">I was doing a new install (reinstall) of FC8 Unity and when I tried to configure the disks and partitions I put a software RAID partition on one drive, and another of the same size on the other drive, and then told the installer to make them RAID10. I got back a message that at least four drives are needed for RAID10. </pre> </blockquote> <pre wrap=""> The installer doesn't let you use all of the modes that mdadm can. It is sort of a nanny to keep people from picking unusual combinations that they may not really want. I have asked for raid 1 to work with 1 element in anaconda several times (as this makes adding elements later a lot easier). I think the current status is that it will use a preexisting raid 1 array with one element (not a 2 element array with one element failed), but not allow you to create one. </pre> </blockquote> I can see being reluctant to allow creation of an array with failed elements, but RAID10 with two drives is not in any sense a degraded array, it a fully functional configuration. RAID1+0 (stripe over mirror) is a totally different configuration, and does require at least four members and the number must be even. RAID10 requires two or more, three is a perfectly valid number. I can see not supporting degraded configurations, but the RAID10 is just a think-o AFAIK, someone made an install menu and didn't know what it really meant. I see that the rescue disk doesn't assemble and use RAID10 swap, either, although you can do it by hand. Hopefully this will get fixed for FC9! <pre class="moz-signature" cols="72">-- Bill Davidsen <a class="moz-txt-link-rfc2396E" href="mailto:davidsen@tmr.com"><davidsen@tmr.com></a> "Woe unto the statesman who makes war without a reason that will still be valid when the war is over..." Otto von Bismark </pre> </body> </html>