[OpenAFS] Caveats of having AFS cache on a shared ext3 partition in Linux?

[Jason Edgecombe]

Harald Barth wrote:
>> caveats of having the AFS be on an ext3 filesystem in Linux, which
>> is shared by the rest of the system?
>>     
>
> Slower.
>
>   
>> filling the partition that AFS uses for caching
>>     
>
> Means normally reboot.
>
>   
>> Should the 5% root reserved percentage help with that?
>>     
>
> In a student lab you could make the reserved percentage so big that it
> is unlikely that root (logs) and AFS (cache) fill the partition (both
> root and AFS can write over that limit).
>   

good to know.
>> The background to this is I'l be deploying a university computer lab
>> full of Apple 21.5" iMacs running Linux as the sole OS. I need to
>> set a firmware password, but the Mac will not boot a /boot+LVM
>> partition layout with a firmware password, but it will boot with a
>> password when I only have one partition. Things boot fine when no
>> firmware password is set :(
>>     
>
> Hi Jason, you could loopbackmount an ext2. Maybe even tmpfs if you run
> a client version that supports tmpfs as a cache file system. Just
> don't forget to make a bigger swap in that case.
>   
Does 1.4.11 support tmpfs?

The loopback should be ext2 intead of ext3?

FYI, the swap must be a swapfile, not a dedicated partition...sigh.

Thanks,
Jason