Re: [Need Help]isboot (iSCSI boot driver) version 0.2.1

Thank you for your advice!

> 128KB is a default MAXPHYS value. You may rise it in your kernel if you
> want. I am successfully using 1MB MAXPHYS now.

I misunderstood. I thought maxio was able to overwrite in GENERIC kernel.
OK, I built custom kernel. There is a result. It's great! The log shows:
client request 1 PDU(SCSI OP=0x28) with TL=1MB (2048 blocks).
target response 4 PDUs with MRDSL=256KB (SCSI status is embedded in last 
BHS).
---------------------------------------------------------------
iSCSI client: FreeBSD 8.1-RC2 amd64 + isboot 0.2.2 (maxio=1M)
iSCSI target: FreeBSD 7.3 amd64 + istgt 20100606 (QueueDepth 64)

Notes: both side use em(4) with MTU=1500.
       test.dat was created before rebooting.

[root_at_fbs8-isboot /usr/tmp]# dd if=./test.dat of=/dev/null bs=1m count=1k
1024+0 records in
1024+0 records out
1073741824 bytes transferred in 9.357166 secs (114750753 bytes/sec)
[root_at_fbs8-isboot /usr/tmp]# dd if=/dev/zero of=./test0.dat bs=1m count=1k
1024+0 records in
1024+0 records out
1073741824 bytes transferred in 15.100469 secs (71106521 bytes/sec)

/usr/src/sys/amd64/conf/GENERIC (added):
options         MAXPHYS=(1024*1024)

/boot/loader.conf:
isboot_load="YES"

/etc/sysctl.conf:
vfs.read_max=2048
kern.ipc.maxsockbuf=16777216
net.inet.tcp.sendbuf_max=16777216
net.inet.tcp.recvbuf_max=16777216
net.inet.tcp.sendbuf_auto=1
net.inet.tcp.sendbuf_inc=16384
net.inet.tcp.recvbuf_auto=1
net.inet.tcp.recvbuf_inc=524288
net.inet.tcp.inflight.enable=0
---------------------------------------------------------------
When enabling log at istgt (previous 16KB and queued 1MB read):

istgt_iscsi.c: 430:istgt_iscsi_read_pdu: BHS read 48
istgt_iscsi.c: 242:istgt_iscsi_read: Read 48 bytes (no padding)
istgt_iscsi.c:4870:worker: isid=804953420001, tsih=1, cid=1, op=1
istgt_iscsi.c:4352:istgt_iscsi_execute: opcode 1
CDB
28 00 02 c1 80 ff 00 08 (.......
00 00 00 00 00 00 00 00 ........
istgt_iscsi.c:2934:istgt_iscsi_op_scsi: I=0, F=1, R=1, W=0, Attr=1, 
ITT=3bf7, TL=1048576
istgt_iscsi.c:2939:istgt_iscsi_op_scsi: CmdSN=15350, ExpStatSN=15351, 
StatSN=15351, ExpCmdSN=15350, MaxCmdSN=15412
istgt_lu.c:2227:istgt_lu_execute: LU99: PG=0x0001, 
Name=iqn.2007-09.jp.ne.peach:isboot1, LUN=0x0002000000000000
istgt_lu_disk.c:4162:istgt_lu_disk_queue: Queue(0), CmdSN=15350, OP=0x28, 
LUN=0x0002000000000000
istgt_lu_disk.c:4175:istgt_lu_disk_queue: insert Simple
istgt_iscsi.c:3088:istgt_iscsi_op_scsi: Queue OK
istgt_iscsi.c:4890:worker: isid=804953420001, tsih=1, cid=1, op=1 complete
istgt_iscsi.c:4760:worker: kevent sock 40 (timeout 20000ms)
istgt_lu_disk.c:3540:istgt_lu_disk_lbread: Read 16384/16384 bytes
istgt_lu_disk.c:5726:istgt_lu_disk_execute: SCSI OP=0x28, 
LUN=0x0002000000000000 status=0x0, complete
istgt_iscsi.c:3219:istgt_iscsi_task_response: SCSI response CmdSN=15349
istgt_iscsi.c:2776:istgt_iscsi_transfer_in: Transfer 16384
istgt_iscsi.c:2811:istgt_iscsi_transfer_in: Transfer=16384, Offset=0, 
Len=16384
istgt_iscsi.c:2814:istgt_iscsi_transfer_in: StatSN=15351, DataSN=0, 
Offset=0, Len=16384
istgt_iscsi.c: 678:istgt_iscsi_write_pdu: BHS write 48
istgt_iscsi.c: 367:istgt_iscsi_write: Write 48 bytes (no padding)
istgt_iscsi.c: 744:istgt_iscsi_write_pdu: Data write 16384
istgt_iscsi.c: 367:istgt_iscsi_write: Write 16384 bytes (no padding)
istgt_iscsi.c:4760:worker: kevent sock 40 (timeout 20000ms)
istgt_lu_disk.c:4510:istgt_lu_disk_queue_start: LU99: LUN2 queue end
istgt_lu_disk.c:4250:istgt_lu_disk_queue_count: LU99: LUN2 queue(1)
istgt_lu_disk.c:4284:istgt_lu_disk_queue_start: LU99: LUN2 queue start
istgt_lu_disk.c:4480:istgt_lu_disk_queue_start: LU99: LUN2 Task Read Start
istgt_lu_disk.c:4617:istgt_lu_disk_execute: SCSI OP=0x28, 
LUN=0x0002000000000000
istgt_lu_disk.c:5129:istgt_lu_disk_execute: READ_10(lba 46235903, len 2048 
blocks)
istgt_lu_disk.c:3514:istgt_lu_disk_lbread: Read: max=67108864, lba=46235903, 
len=2048
istgt_lu_disk.c:3540:istgt_lu_disk_lbread: Read 1048576/1048576 bytes
istgt_lu_disk.c:5726:istgt_lu_disk_execute: SCSI OP=0x28, 
LUN=0x0002000000000000 status=0x0, complete
istgt_lu_disk.c:4510:istgt_lu_disk_queue_start: LU99: LUN2 queue end
istgt_iscsi.c:3219:istgt_iscsi_task_response: SCSI response CmdSN=15350
istgt_iscsi.c:2776:istgt_iscsi_transfer_in: Transfer 1048576
istgt_iscsi.c:2811:istgt_iscsi_transfer_in: Transfer=1048576, Offset=0, 
Len=262144
istgt_iscsi.c:2814:istgt_iscsi_transfer_in: StatSN=15352, DataSN=0, 
Offset=0, Len=262144
istgt_iscsi.c: 678:istgt_iscsi_write_pdu: BHS write 48
istgt_iscsi.c: 367:istgt_iscsi_write: Write 48 bytes (no padding)
istgt_iscsi.c: 744:istgt_iscsi_write_pdu: Data write 262144
istgt_iscsi.c: 367:istgt_iscsi_write: Write 262144 bytes (no padding)
istgt_iscsi.c:2811:istgt_iscsi_transfer_in: Transfer=1048576, Offset=262144, 
Len=262144
istgt_iscsi.c:2814:istgt_iscsi_transfer_in: StatSN=15352, DataSN=1, 
Offset=262144, Len=262144
istgt_iscsi.c: 678:istgt_iscsi_write_pdu: BHS write 48
istgt_iscsi.c: 367:istgt_iscsi_write: Write 48 bytes (no padding)
istgt_iscsi.c: 744:istgt_iscsi_write_pdu: Data write 262144
istgt_iscsi.c: 367:istgt_iscsi_write: Write 262144 bytes (no padding)
istgt_iscsi.c:2811:istgt_iscsi_transfer_in: Transfer=1048576, Offset=524288, 
Len=262144
istgt_iscsi.c:2814:istgt_iscsi_transfer_in: StatSN=15352, DataSN=2, 
Offset=524288, Len=262144
istgt_iscsi.c: 678:istgt_iscsi_write_pdu: BHS write 48
istgt_iscsi.c: 367:istgt_iscsi_write: Write 48 bytes (no padding)
istgt_iscsi.c: 744:istgt_iscsi_write_pdu: Data write 262144
istgt_iscsi.c: 367:istgt_iscsi_write: Write 262144 bytes (no padding)
istgt_iscsi.c:2811:istgt_iscsi_transfer_in: Transfer=1048576, Offset=786432, 
Len=262144
istgt_iscsi.c:2814:istgt_iscsi_transfer_in: StatSN=15352, DataSN=3, 
Offset=786432, Len=262144
istgt_iscsi.c: 678:istgt_iscsi_write_pdu: BHS write 48
istgt_iscsi.c: 367:istgt_iscsi_write: Write 48 bytes (no padding)
istgt_iscsi.c: 744:istgt_iscsi_write_pdu: Data write 262144
istgt_iscsi.c: 367:istgt_iscsi_write: Write 262144 bytes (no padding)
istgt_iscsi.c:4760:worker: kevent sock 40 (timeout 20000ms)
---------------------------------------------------------------
-- 
Daisuke Aoyama