On Mon, 25 Aug 2008, Carson Gaspar wrote: > > B) The driver does not detect the removal. Commands must time out before > a problem is detected. Due to driver layering, timeouts increase > rapidly, causig te OS to "hang" for unreasonable periods of time. > > We really need to fix (B). It seems the "easy" fixes are: > > - Configure faster timeouts and fewer retries on redundant devices,
I don't think that any of these "easy" fixes are wise. Any fix based on timeouts is going to cause problems with devices mysteriously timing out and being resilvered. Device drivers should know the expected behavior of the device and act appropriately. For example, if the device is in a powered-down state, then the device driver can expect that it will take at least 30 seconds for the device to return after being requested to power-up but that some weak devices might take a minute. As far as device drivers go, I expect that IDE device drivers are at the very bottom of the feeding chain in Solaris since Solaris is optimized for enterprise hardware. Since OpenSolaris is open source, perhaps some brave soul can investigate the issues with the IDE device driver and send a patch. Bob ====================================== Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
