[linux-lvm] AIX JFS dual-mount

Harald Milz hm at seneca.muc.de
Fri Feb 11 07:16:38 UTC 2000

Christopher Shaulis <shaulis at tkg.com> wrote:
> There is something called clvm (concurrent logical volume manager) for
> AIX which ships as part of HACMP (high availability clustering

Maybe the topic is a bit arbitrary here - but CLVM does _not_ support
dual-mount configurations. Main reason: it has no interface to the two
JFS's write caches... Its only intent was to facilitate multi-host access
to raw devices, a la databases, but as you say... 

> reported to be slow. Most developers (ie Oracle) choose instead to roll
> their own locking solutions. I've never actually seen anyone use it


The only multi-mount filesystem on AIX so far is the GPFS (General purpose
filesystem) running on top of the RVSD (Recoverable Virtual Storage Disk)
which only runs on an SP. 

"What George Washington did for us was to throw out the British, so
that we wouldn't have a fat, insensitive government running our
country. Nice try anyway, George."
		-- D.J. on KSFO/KYA

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