My gut feeling is that somehow the DKIOCFLUSHWRITECACHE ioctls (which translate to the SCSI flush write cace requests) are throwing iSCSI for a loop. We've exposed a number of bugs in our drivers because ZFS is the first filesystem to actually care to issue this request.
To turn this off, you can try: # mdb -kw > ::walk spa | ::print spa_t spa_root_vdev | ::vdev -r ADDR STATE AUX DESCRIPTION ffffffff82dc16c0 HEALTHY - root ffffffff82dc0640 HEALTHY - /dev/dsk/c0d0s0 > ffffffff82dc0640::print -a vdev_t vdev_nowritecache ffffffff82dc0af8 vdev_nowritecache = 0 (B_FALSE) > ffffffff82dc0af8/W1 0xffffffff82dc0af8: 0 = 0x1 > See if that makes a difference. - Eric -- Eric Schrock, Solaris Kernel Development http://blogs.sun.com/eschrock _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
