On Sat, Oct 23, 2010 at 10:05:30PM -0700, Nataraj wrote: > fred smith wrote: > > On Thu, Oct 21, 2010 at 11:03:27AM -0700, Nataraj wrote: > > > >> fred smith wrote: > >> > >>> Thanks for the additional information. > >>> > >>> I'll try backing up everything this weekend then will take a stab at it. > >>> > >>> someone said earlier that the differing raid superblocks were probably > >>> the cause of the misassignment in the first place. but I have no clue > >>> how the superblocks could have become messed up, can any of you comment > >>> on that? willl I need to hack at that issue, too, before I can succeed? > >>> > >>> thanks again! > >>> > >>> > >>> > >>>> Nataraj > >>>> > >>>> > >> I would first try adding the drives back in with: > >> > >> mdadm /dev/mdN -a /dev/sdXn > >> > >> Again, this is after having stopped the bogus md arrays. > >> > > > > Nataraj, that worked fine, didn't need to --force it. Now I'm back to > > having two devices in md0 and two in md1, and they're the RIGHT two! :) > > Put the box in single-user mode to do the work, then after the array > > finished resyncing, rebooted and it came up with the right two md devices. > > > > I appreciate your tutoring me on this, you've been most helpful. > > > > Thanks a bunch! > > > > Oh, can you refer me to any good documentation on how to admin a > > software raid system? One aimed for people, like me, who are > > computer literate, but have never trained as a sysadmin, and who > > don't know much about RAID... > > > > thanks again! > > > > Fred > > > Hi Fred, > > You might try this one, since it seems to be one of the more up to date: > https://raid.wiki.kernel.org/index.php/Linux_Raid > > Also the mdadm man page and running "mdadm --help". > > Oh, and there's this, however, some of the pages just happen to be in > Chinese... > http://wiki.centos.org/Search?action=fullsearch&titlesearch=1&value=raid > <http://wiki.centos.org/Search?action=fullsearch&titlesearch=1&value=raid> Once again, thanks! the raid.wiki... one looks good. I'm afraid that a Chinese-language resource isn't going to help me much... but perhaps someone else will see this and find it helpful. -- ---- Fred Smith -- fredex at fcshome.stoneham.ma.us ----------------------------- "For the word of God is living and active. Sharper than any double-edged sword, it penetrates even to dividing soul and spirit, joints and marrow; it judges the thoughts and attitudes of the heart." ---------------------------- Hebrews 4:12 (niv) ------------------------------