In message <[EMAIL PROTECTED]>, Mike Smith writes:
>The sticking issue that we discussed was allowing more than one system to
>mount a given filesystem;
I pressume we're talking R/W mounts here, since a R/O mount obviously
would not be a problem.
With UFS/FFS there are significant meta-data caching which would
need not only high-level locking (for atomic rename(2) calls) but
also low-level locking (who allocates a particular free block).
In short: a major hazzle.
It might be possible to allow one machine R/W and have the others
R/O snoop on the same device, but a more agressive write policy
would be needed to get closer to real-time behaviour.
--
Poul-Henning Kamp FreeBSD coreteam member
[EMAIL PROTECTED] "Real hackers run -current on their laptop."
FreeBSD -- It will take a long time before progress goes too far!
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