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Eduardo Grosclaude wrote:
- Build a 100MB RAID-type partition on each disk
- Build a second RAID-type partition taking the remaining space on each disk
- Build a RAID 1 device over the small partitions
- Build a second RAID 1 device over the bigger ones
- Declare /boot as ext3 to live on the smaller RAID 1 device
- Declare an LVM PV to live on the bigger one
- Build a VG on the PV, then build LVs for swap, / and /data on the VG
Only problem is, I numbly have failed to follow [1] in that I left Disk Druid to make partitions wherever it chooses, so now I have cross-named partitions... md0 is the bigger RAID 1 device with /dev/sda2 AND /dev/sdb1... and md1 is the smaller one with /dev/sda1 AND /dev/sdb2. Oh well, things can't get complicated on this, I tell myself.
To prevent the mix-up of partitions sequence during installation, here's what I do (sorry for the copy paste :)) 1. Build a 100MB RAID-type partition on each disk 3. Build a RAID 1 device over the small partitions 2. Build a second RAID-type partition taking the remaining space on each disk 4. Build a second RAID 1 device over the bigger ones
That way /dev/{sda1,sdb1} will surely be /dev/md0, and /dev/{sda2,sdb2} will be /dev/md1.
To address the second issue of grub is not installed on the second RAID1 disk, I thought it was an old bug in Centos4.0 which since then has been fixed. I'm not sure if it's related, but as a workaround you can try labeling the raid array so that it wont matter if the computer recognizes it as sda or sdb. Here's a good article: http://cgerada.blogspot.com/2008/07/software-raid-on-linux.html
HTH, - -- Fajar Priyanto | Reg'd Linux User #327841 | Linux tutorial http://linux2.arinet.org 13:10:54 up 5:02, 2.6.24-18-generic GNU/Linux Let's use OpenOffice. http://www.openoffice.org The real challenge of teaching is getting your students motivated to learn.