Tomo, List Please find a patch that updates the BLOCK_LIMITS page. It specifies that the COMPARE_AND_WRITE command is supported and the limit is 126 blocks. If thin provisioning is active for the LUN it also sets MAXIMUM UNMAP LBA COUNT and BLOCK DESCRIPTOR COUNT to -1 to indicate that UNMAP is supported and that tere is no limit on how many LBAs or descriptors can be specified. regards ronnie sahlberg -- To unsubscribe from this list: send the line "unsubscribe stgt" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html