[linux-lvm] Re: (reiserfs) Re: AIX JFS dual-mount

Peter C. Norton spacey at lenin.nu
Sat Jan 29 20:32:15 UTC 2000

There does seem to be a seagate scsi drive listed that does some kind of
dlocks.  Dlocks may not be FC only.


On Sat, Jan 29, 2000 at 12:26:14PM -0800, Tracy R Reed wrote:
> On Sat, Jan 29, 2000 at 09:54:03AM -0800, Peter C. Norton wrote:
> > GFS seems to require some support from hardware in the way of "dlocks", a
> > not-too widely supported standard.  I think you'd need to have drives that
> > implement dlocks, and that the lvm would have to know about them.  What
> > would need to be done to the volume stuff to support dlocks?  Could any
> > filesystem be built on top of a volume manager with dlock support?
> There are two options: You can use dlocks with special drive firmware or you
> can use a global lock manager over TCP with one of the hosts running the lock
> manager. I was thinking the latter way might be possible for non-fibrechannel
> setups.
> --
> Tracy Reed      http://www.ultraviolet.org
> "She moves in mysterious ways"

The 5 year plan:
In five years we'll make up another plan.
Or just re-use this one.

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