Actually I'm not sure removing cmd_spdtl is the right answer.
If /dev/sda is a device on an iSCSI initiator exported by an LIO
target, try doing:
# sg_raw -r512 /dev/sda 28 0 0 0 0 0 0 0 2 0
This issues a READ (10) for 2 sectors, but only sends a length of 512
at the transfer level.
The target responds by setting the residual to 512 but transmits all
1024 bytes, and the Linux initiator at least rejects it because it
hits:
if (tcp_task->data_offset + tcp_conn->in.datalen > total_in_length) {
ISCSI_DBG_TCP(conn, "data_offset(%d) + data_len(%d) > "
"total_length_in(%d)\n", tcp_task->data_offset,
tcp_conn->in.datalen, total_in_length);
return ISCSI_ERR_DATA_OFFSET;
}
- R.
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