> > What kind of filesystem did you use on the DVD RAM? > > udfs
Hmm, this is a bit surprising, because I would expect udfs on optical media is designed to write nicely on 2K aligned sectors. Bug 6368142 was about lots of concurrent i/o accesses that were not aligned on 2K sector boundaries. Maybe this is a different issue? Maybe not? Are you running a release or a debug snv_33 kernel? SXCR == release kernel. When you compile your own kernel using opensolaris sources and update the OS with "bfu" , most likely you would be running debug kernel modules. With a debug kernel the issue from 6368142 is easier to diagnose (failed assertion, kernel is accessing memory filled with "0xdeadbeef" pattern). With a release kernel, almost everything can happen when kernel memory gets corrupted. If you're using a release kernel, you may want to repeat your DVD-RAM udfs experiment with the kernel running with kernel heap memory checking enabled: add "set kmem_flags=0xf" to /etc/system, and reboot. This message posted from opensolaris.org