HyperSCSI

[Rob Siemborski]

On Wed, 4 Sep 2002, [iso-8859-1] daniele.sartori at libero.it wrote:

> hello, does anyone try HyperSCSI whit two cyrus imap (share the same disk)
> for load balancing ?

My guess is "no" since thje software appears to have been released less
than a week ago.

The main problem that HyperSCSI would need to solve for Cyrus to work
correctly would be to allow for filesystem locks to be honored between the
two systems, so that if a fcntl(F_SETLKW) or flock(LOCK_EX) is executed on
one system, it is honored on the other (this is why mail spools can't be
placed on NFS, for example).

Based on a brief reading their web site, it appears that HyperSCSI works
at the device level rather than at the filesystem level, that it wouldn't
accomplish this, but again, that's just based on a brief reading of their
website.

-Rob

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Rob Siemborski * Andrew Systems Group * Cyert Hall 207 * 412-268-7456
Research Systems Programmer * /usr/contributed Gatekeeper