g...@lexort.com (Greg Troxel) writes: >> I typically set/confirm with mt that the device is set to 0/variable >> block and then search around for a recommended blocking factor for the >> hardware in question. For example - my Exabyte Mammoth 8mm (not this >> device) supposedly is best with 240k (tar -b 480)
>an interesting value. not 256k! NetBSD limits I/O requests to MAXPHYS, so the max blocking factor of tar for tapes is 128 (with GENERIC kernel). The default is 20.
