Hi,
I read the intro to LVM and like the fact that I can add additional HDs without problems. However, if I want to have everything running in a RAID1 configuration in case one of my hard disks decides to crash or break some sectors, how do the two work together? Do I first configure the RAID1 and put the LVMs on top of my md_ partitions?
How reliable is this, and how much performance do I loose?
I find it very reliable. I've heard some people having trouble under heavy loads, but I beleive thay also had some other exotic stuff changed in Kernel (non-standard memory page size and stuff like that).
Anyhow, to configure it, first create RAID1 md device, as usual (say you created /dev/md4). Than define it as physical volume (pvcreate /dev/md4) and simply add it into existing volume group (vgextend vol_group /dev/md4), or use it as component of new volume group (vgcreate new_vol_group /dev/md4).
-- Aleksandar Milivojevic <amilivojevic@xxxxxx> Pollard Banknote Limited Systems Administrator 1499 Buffalo Place Tel: (204) 474-2323 ext 276 Winnipeg, MB R3T 1L7
