Re: OT:fault tolerant nfs HOW?

David Woodhouse (David.Woodhouse@mvhi.com)
Thu, 08 Apr 1999 16:41:30 +0100

sct@redhat.com said:
> On Wed, 07 Apr 1999 14:10:10 +0100, David.Woodhouse@mvhi.com said:
>
> > Perhaps what we need is a filesystem that can be written concurrently
> > by many different hosts? Unfortunately, I don't think it's even
> > possible to build the necessary synchronisation primitives with our
> > current block device hardware.
>
> http://gfs.lcse.umn.edu/

Impressive. How does the current nbd compare with the scheme outlined in §6.5
of the "latest GFS paper" - "SCSI over IP"? Does/will it support the Dlock
command, or will GFS use something different?

Just how much modification to the Linux block device layer was/is necessary to
handle the Dlock stuff?

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