Date: Wed, 10 Sep 2014 12:43:26 -0700 From: Chuck Tuffli <chuck@tuffli.net> To: freebsd-scsi <freebsd-scsi@freebsd.org> Subject: equivalent of Linux dev loss timeout? Message-ID: <CAM0tzX0iHwmLt_QJ%2BePtppUvFhqK7_rsdWm5PXQhtPQuyQGY2Q@mail.gmail.com>
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Linux SCSI initiator drivers have the ability to send transport events (e.g. link up/down) to a module that handles reporting and removing devices from the system. By setting a "dev loss timeout", users can specify how long a device can be missing before it is removed from the system. As one example of how this is used, enthusiastic testers can run IO to a device, yank out the cable between the initiator and the device for less than dev loss timeout seconds, and then watch as the IO's resume after the cable is reinserted. Does anything like this exist in CAM or would it be up to each SIM to implement this behavior? --chuck
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