On Wednesday 05 November 2008, Rink Springer wrote: > On Wed, Nov 05, 2008 at 02:18:17AM -0700, M. Warner Losh wrote: > > In message: <[EMAIL PROTECTED]> > > > > Hans Petter Selasky <[EMAIL PROTECTED]> writes: > > : On Wednesday 05 November 2008, Lars Engels wrote: > > : > Mounting a umass device, removing it and doing an 'ls' on the > > : > mountpoint freezes the system, I thought this should not happen with > > : > the new stack? > > : > > : It is not a USB problem. It is the CAM layer that is hanging on the > > : disk. > > > > Sure it is CAM layer and not buffer cache or filesystem code? > > Well, the CAM layer problem will immediately first - it does not like > CAM busses disappearing. Once this is fixed or avoided and the problem > still shows up, we can blame buffer cache / filesystem code. > > As I suggested before, a good fix is to create one CAM bus per USB root > hub, and use that to attach all umass devices to. This will also get rid > of the one-bus-per-umass-device which is visually unappealling. >
I've temporarily created one CAM bus per module, and release it when the usb2_storage_mass module is unloaded. --HPS _______________________________________________ freebsd-usb@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "[EMAIL PROTECTED]"
