ok which mobo did you get? You could have an issue with the mobo's chipset support. Which version of Centos? Craig White wrote: > On Fri, 2007-01-12 at 23:16 -0600, Les Mikesell wrote: >> Craig White wrote: >>>>> I have software RAID level 1 and the mirrored drives are the master & >>>>> slave on the primary controller and I'm thinking that is my mistake. >>>>> >>>>> Is there a simple method for changing the configuration of md before I >>>>> switch the slave drive to be the slave on the secondary controller? >>>>> >>>> I think they will pair up automatically if you shut down cleanly >>>> and move the connector. If not, just 'mdadm --add' it back after >>>> it comes up with a missing member. If you have to add it back, >>>> the drives will have to resync so there is a small risk of >>>> failure during the process. >>> ---- >>> great thanks - am I right in thinking that having both mirrored drives >>> on the same controller master/slave is likely a cause of slowness? >> It will make some difference on writes, but reads should only >> be done on one of the drives anyway. I doubt if it makes a huge >> difference unless you have an application writing all the time. > ---- > here's my problem - system was ok and mother board died. Purchased a new > motherboard and this is what I get... > > # hdparm -t /dev/md1 > > /dev/md1: > Timing buffered disk reads: 4 MB in 3.68 seconds = 1.09 MB/sec > > which is dreadfully slow > > Thanks > > Craig > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > > -- My "Foundation" verse: Isa 54:17 No weapon that is formed against thee shall prosper; and every tongue that shall rise against thee in judgment thou shalt condemn. This is the heritage of the servants of the LORD, and their righteousness is of me, saith the LORD. -- carpe ductum -- "Grab the tape" CDTT (Certified Duct Tape Technician) Linux user #322099 Machines: 206822 256638 276825 http://counter.li.org/