I am running FC4 (2.6.11-1.1369_FC4) and have compiled
the linux-iscsi.126.96.36.199 driver for that kernel.
I know I should probably be using the open-iscsi but at
this point in the game it is not an option or one that
I really dont want to take.
The target is an Overland REO 4000 virtual tape
device....has to be a tape device, panic does not
happen with disk devices. When I use sg_utils
(sg_test_rwbuf) command to issue a w/r greater than a
page (4k) the system panics. I can do =<4k sg io all
day without issue. This only happens when the iSCSI
connection is across an gigE link....does not happen
when connection is across an 10/100 link. NIC's, both
10/100 and GIG, are Intel MB embedded adapters using
the e100 and e1000 respectively. Attached is a capture
of the call trace. This one has me twisting.....ugh!
Any help would be greatly appreciated.
./sg_test_rwbuf --size=4096 /dev/sg0 count=5 => this works
./sg_test_rwbuf --size=8192 /dev/sg0 count=5 => this panics