An issue which I'm pondering atm is how to approach partitioning with a system that might have raid1 added to it. The box is currently set up as follows: Filesystem 1024-blocks Used Available Capacity Mounted on /dev/sda1 498900 20590 452543 4% / /dev/sda6 1017406 106946 857894 11% /tmp /dev/sda8 1910271 226369 1585158 12% /usr /dev/sda7 498900 14904 458229 3% /var /dev/md0 8080034 152654 7508494 2% /mnt/u1 Six 4.3G disks are currently installed. sda is the system disk (as can be seen above), while sd[bcd] form /dev/md0 (RAID5) which holds the user partition for the application. sde is intended to become a RAID1 mirror of sda, whilst sdf is intended to become a hot-standby for /dev/md0. Now, from what I read on the list, the md RAID scheme always sits on top of partitions - /dev/md0 can't contain partitions with seperate filesystems itself. I need to keep those filesystems on sda seperate as they are above for administrative purposes. I've used a few hardware RAID solutions in the past, where the system as presented with a single virtual SCSI disk device, on top of which I would create partitions with filesystems. Clearly, a different approach from Linux's md. I seem to have three options for the system disk: 1. Duplicate sda's partition structure on sde, then bind each corresponding set up partitions (sda1 with sde1, etc) together as a RAID1 pair, with a filesystem on it. 2. Find a way to bind sda and sde together as a RAID1 pair, and partition that. I'm more used to this approach and would rather prefer this, but I can't find a reference to this being possible. The md subsystem doesn't appear to sit at the hardware device layer as far as the kernel is concerned, so I can't run 'fdisk /dev/md1', the kernel doesn't keep partition table data for md devices, etc. 3. Unify the current seperate partitions on sda into one, then run a single 'system' fs across an sda,sde RAID1 pair. I'd like to avoid this if possible. Any other ideas pls? Thanks Regards ------------------------------------------------------------------------- Louis Mandelstam # man 8 consulting -o) email: [EMAIL PROTECTED] System administration contracting /\\ Mobile: +27-83-289-0310 'whois LM497' for current contact info _\_v ---------------------[ Penguin Cloning Specialist ]----------------------
