A Darren Dunham wrote: > On Tue, Jun 10, 2008 at 05:32:21PM -0400, Torrey McMahon wrote: > >> However, some apps will probably be very unhappy if i/o takes 60 seconds >> to complete. >> > > It's certainly not uncommon for that to occur in an NFS environment. > All of our applications seem to hang on just fine for minor planned and > unplanned outages. > > Would the apps behave differently in this case? (I'm certainly not > thinking of a production database for such a configuration).
Some applications have their own internal timers that track i/o time and, if it doesn't complete in time, will error out. I don't know which part of the stack the timer was in but I've seen an Oracle RAC cluster on QFS timeout much faster then the SCSI retries normally allow for. (I think it was Oracle in that case...) _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
