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=... http://wiki.centos.org/Search?action=fullsearch&titlesearch=1&value=raid
Nataraj
Nataraj