On 04/01/2011 19:40, Hank Barta wrote:
Hi folks,
This is going to be one of those corner cases and I'm sure some of you
won't even think it a good idea. But I won;t let that stop me from
asking your opinion.
[...]
Go ahead :-)
So... Anything you would do differently?
First up, booting. You'll have to boot off a bare device which may in
fact be a mirror over 2 or more sticks. Make that your first partition.
I think it's simpler to make it over all 4. Look up booting from RAID to
find out how.
Then, as far as I know USB flash sticks have lousy or no wear-levelling
algorithms and use cheap flash which may not have very many write
cycles, so given that, I'd either:
1. Use RAID-1, 5 or 10 for the rest of the system with ext4 as you suggest,
or 2. Use btrfs for the rest of the system - btrfs is included in Ubuntu
10.10 but you may be able to get it for 10.04.
And in either case, make sure there are regular backups of the whole lot
to your main disc-based array, because those $7 USB sticks could still
give you problems.
Or 3. I might just decide to use just one stick to boot the system from
(as a /boot) and put the rest of the system in an LVM LV, or even a
file, on the main array, and make sure I had a second stick to start the
system from if the first one went bad.
In any case, it's an interesting project, so good luck!
Cheers,
John.
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