> -----Original Message----- > From: Eric Seppanen [mailto:eric@xxxxxxxxxxxxxxx] > Sent: Thursday, October 03, 2013 1:49 PM > To: Nicholas A. Bellinger > Cc: KY Srinivasan; linux-kernel@xxxxxxxxxxxxxxx; devel@xxxxxxxxxxxxxxxxxxxxxx; > linux-scsi@xxxxxxxxxxxxxxx > Subject: Re: Drivers: scsi: FLUSH timeout > > On Thu, Oct 3, 2013 at 5:09 AM, Nicholas A. Bellinger > <nab@xxxxxxxxxxxxxxx> wrote: > > > > On Wed, 2013-10-02 at 18:29 +0000, KY Srinivasan wrote: > > > Ideally, I want this to be adjustable like the way we can change the I/O > timeout. > > > Since that has been attempted earlier and rejected (not clear what the > reasons were), > > > I was suggesting that we pick a larger number. James, let me know how I > should proceed here. > > > > > > > I think the objection was to making a module parameter for doing this > > globally for all struct scsi_disk, and not the idea of making it > > adjustable on an individual basis per-say.. > > > > What about adding a /sys/class/scsi_disk/$HCTL/flush_timeout..? > > Do I/O timeouts and flush timeouts need to be independently adjusted? > If you're having trouble with slow operations, it seems likely to be > across the board. > > Flush timeout could be defined as 2x the read/write timeout. Any > other command-specific timeouts could be scaled the same way. I like this idea and would result in minimal changes. James, if it ok with you, I could send you the patch. Regards, K. Y _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
