I do apologize for the use of Exchange. While I may be the guy in charge
of all things unix, excepting MAS90 (thank gods), they won't let me
switch over from exchange. Anyways...
I'm working on some production machines that need to be at least
*somewhat* fault tolerant. (for x86 hardware. *puke*)
I figured I could at least prevent filesystem corruption by using a
RAID1 setup. These are *tiny* rackmount PCs on "industrial"
motherboards. So I only have room for the NIC, the modem, the Equinox
SST8P, and the "motherboard," if it could even be called that. (can you
tell I *hate* x86?)
Well, I'm using Debian 2.1 (slink), 2.0.36 monolithic and minimized. (No
extra drivers or debugging stuff.) And I've done the RTFM thing.
And I'm positively lost. So, I'm hoping someone out there can help. I've
got the syntax of mdadd and such figured out. (I'm not using raidtools,
FYI.) Here's how it's setup.
Industrial Automated Computers AP-540 motherboard
Pentium 233MMX, 32M EDO
Equinox SST8P PCI 8 port Serial Board (using Equinox drivers, separate
modules - not a kernel patch.)
USR Sportster 33.6k Internal ISA FaxModem (Jumpered, ttyS1)
3Com 3C905 "Vortex" 10/100bT NIC
4.3G Quantum Fireball SE IDE HDD
The 4.3G is partitioned like this:
1971.2M
hda1 - 750M - Linux Native, ext2
hda2 - 1221M - Linux Native, ext2
hda3 - 750M - Linux Native, ext2
hda4 - 1447M - Extended
hda5 - 1221M - Linux Native, ext2
hda6 - 128M - Linux Swap
hda7 - 128M - Linux Swap
Here's what I'd like to do:
hda1 -> / -> Soft RAID1 -> hda3 -\
>-< NFS Mounted Update Server
hda2 -> /usr -> Soft RAID1 -> hda5 -/
So, in words:
hda1, mounted on /, is mirrored via software RAID1 on hda3.
hda2, mounted on /usr, is mirrored via software RAID1 on hda5.
The machine updates automatically via crontab off an NFS mounted update
server.
So far, NFS is working. But I ran into a problem with RAID1. I *did*
achieve RAID1 mirroring on /usr, but /usr would not mount.
Is there a way to RAID1 both / and /usr, yet still be able to mount
them, without adding a second drive?
Thanks muchly.
-Phillip R. Jaenke
Unix Systems Administration - Unicent Technologies
