Regards
Andy Yan
-----Original Message-----
From: Foster_Brian@xxxxxxx [mailto:Foster_Brian@xxxxxxx]
Sent: 2009年6月9日 2:14
To: vst@xxxxxxxx
Cc: linux-scsi@xxxxxxxxxxxxxxx; scst-devel@xxxxxxxxxxxxxxxxxxxxx; Andy Yan; James.Bottomley@xxxxxxxxxxxxxxxxxxxxx
Subject: RE: [ANNOUNCE]: A target driver for Marvell 88SE64xx(3G) and 88SE94xx(6G) SAS cards
Foster_Brian@xxxxxxx, on 06/05/2009 10:10 PM wrote:
Hi All,
I'm glad to announce that a target driver for Marvell 88SE64xx(3G)
and
88SE94xx(6G) SAS cards has been just added in the SCST SVN
repository.
A
lot of thanks to Marvell and Andy Yan!
This driver allows to use a SAS controller based on Marvell
88SE64xx
or
88SE94xx chips as a SAN storage server (target). More info you can
find
on the SCST page http://scst.sourceforge.net.
You can download the driver from SCST SVN by running a command:
$ svn co https://scst.svn.sourceforge.net/svnroot/scst
Hi Vlad/Andy,
Is this target driver expected to work with 6320 cards as well?
Using
this driver, I was able to discover a SATA drive connected to the
6320
in initiator mode.
I connected the 6320 directly to a second 6320 on another machine,
set
up a virtual LUN with SCST (added to the default group, etc.) and
enabled target mode, but I'm not seeing anything on the initiator
side.
Double check you don't have in the kernel log messages like "tgt_dev
for
LUN X not found, command to unexisting LU?" (I assume you have SCST
tracing enabled, it is by default so in the SVN trunk/). If you do,
then
you didn't setup the virtual LUN correctly.
Vlad
Thanks Vlad. I think my SCST configuration is Ok. I did experiment
previously with the iSCSI target and the scst_local driver, and both
worked fine.
Andy,
Thanks for the README. I followed the steps in the file and see the same
result. The following shows the commands I'm using and the associated
output.
On the target side, I load the SCST/mvsas drivers and enable target
mode. This looks like it works, but my 'target_mode' file is slightly
different from what is shown in the README:
root@ix12-1:/sys/class/scsi_host/host17# cat target_mode
phy dev sas address attach dev type attach sas address target
mode
0 5005043011ab0000 0 0
1 5005043011ab0000 0 0
2 5005043011ab0000 0 0
3 5005043011ab0000 0 0
root@ix12-1:/sys/class/scsi_host/host17# echo "enable 1" > target_mode
Jun 8 09:53:20 ix12-1 kernel: /home/brian/scst/mvsas_tgt/mv_init.c
898:get enable
Jun 8 09:53:20 ix12-1 kernel: /home/brian/scst/mvsas_tgt/mv_init.c
853:Enable phy1
Jun 8 09:53:20 ix12-1 kernel: scst: Target mvst_scst (db0f2cc0) for
template mvst_scst registered successfully
Jun 8 09:53:20 ix12-1 kernel: [3054]: mvst_register_tgt_handler:Enable
lun for host 0(0,db140000)
Jun 8 09:53:20 ix12-1 kernel: /home/brian/scst/mvsas_tgt/mv_tgt.c
2290:initiator attaching 0000000000000000,map 2 on port[1]
Jun 8 09:53:20 ix12-1 kernel: /home/brian/scst/mvsas_tgt/mv_tgt.c
2199:set phy 0 to target mode
Jun 8 09:53:20 ix12-1 kernel: /home/brian/scst/mvsas_tgt/mv_tgt.c
2199:set phy 1 to target mode
Jun 8 09:53:20 ix12-1 kernel: /home/brian/scst/mvsas_tgt/mv_tgt.c
2199:set phy 2 to target mode
Jun 8 09:53:20 ix12-1 kernel: /home/brian/scst/mvsas_tgt/mv_tgt.c
2199:set phy 3 to target mode
Jun 8 09:53:22 ix12-1 kernel: /home/brian/scst/mvsas_tgt/mv_tgt.c
1779:Reset phy[0] to notify iniator
Jun 8 09:53:22 ix12-1 kernel: /home/brian/scst/mvsas_tgt/mv_tgt.c
1779:Reset phy[1] to notify iniator
Jun 8 09:53:22 ix12-1 kernel: /home/brian/scst/mvsas_tgt/mv_tgt.c
1779:Reset phy[2] to notify iniator
Jun 8 09:53:22 ix12-1 kernel: /home/brian/scst/mvsas_tgt/mv_tgt.c
1779:Reset phy[3] to notify iniator
Jun 8 09:53:22 ix12-1 kernel: /home/brian/scst/mvsas_tgt/mv_tgt.c
2301:Enable target mode......
root@ix12-1:/sys/class/scsi_host/host17# cat target_mode
phy dev sas address attach dev type attach sas address target
mode
0 5005043011ab0000 0 1
1 5005043011ab0000 0 1
2 5005043011ab0000 0 1
3 5005043011ab0000 0 1
Next, I create the virtual LUN and add it to the default group as LUN 0:
root@ix12-1:/proc/scsi_tgt/vdisk# echo "open test
/mnt/soho_storage/disk" > vdisk
Jun 8 09:54:27 ix12-1 kernel: dev_vdisk: Registering virtual FILEIO
device test
Jun 8 09:54:27 ix12-1 kernel: scst: Processing thread started, PID 4791
Jun 8 09:54:27 ix12-1 kernel: scst: Processing thread started, PID 4792
Jun 8 09:54:27 ix12-1 kernel: scst: Processing thread started, PID 4793
Jun 8 09:54:27 ix12-1 kernel: scst: Processing thread started, PID 4794
Jun 8 09:54:27 ix12-1 kernel: dev_vdisk: Attached SCSI target virtual
disk test (file="/mnt/soho_storage/disk", fs=1000MB, bs=512,
nblocks=2048000, cyln=1000)
Jun 8 09:54:27 ix12-1 kernel: scst: Attached SCSI target mid-level to
virtual device test (id 1)
Jun 8 09:54:27 ix12-1 kernel: scst: Processing thread started, PID 4795
root@ix12-1:/proc/scsi_tgt# echo "add test" > groups/Default/devices
Jun 8 09:55:19 ix12-1 kernel: scst: Added device test to group Default
(LUN 0, rd_only 0)
... and finally, I load the mvsas driver on the initiator side:
root@ix12-2:/# modprobe mvsas
Jun 8 21:56:04 ix12-2 kernel: scst: Attached SCSI target mid-level at
scsi0, channel 0, id 0, lun 0, type 0
Jun 8 21:56:04 ix12-2 kernel: scst: Attached SCSI target mid-level at
scsi1, channel 0, id 0, lun 0, type 0
Jun 8 21:56:04 ix12-2 kernel: scst: Attached SCSI target mid-level at
scsi2, channel 0, id 0, lun 0, type 0
Jun 8 21:56:04 ix12-2 kernel: scst: Attached SCSI target mid-level at
scsi5, channel 0, id 0, lun 0, type 0
Jun 8 21:56:04 ix12-2 kernel: scst: Attached SCSI target mid-level at
scsi6, channel 0, id 0, lun 0, type 0
Jun 8 21:56:04 ix12-2 kernel: scst: Attached SCSI target mid-level at
scsi7, channel 0, id 0, lun 0, type 0
Jun 8 21:56:04 ix12-2 kernel: scst: Attached SCSI target mid-level at
scsi8, channel 0, id 0, lun 0, type 0
Jun 8 21:56:04 ix12-2 kernel: scst: Attached SCSI target mid-level at
scsi9, channel 0, id 0, lun 0, type 0
Jun 8 21:56:04 ix12-2 kernel: scst: Attached SCSI target mid-level at
scsi10, channel 0, id 0, lun 0, type 0
Jun 8 21:56:04 ix12-2 kernel: scst: Attached SCSI target mid-level at
scsi12, channel 0, id 0, lun 0, type 0
Jun 8 21:56:04 ix12-2 kernel: scst: Attached SCSI target mid-level at
scsi13, channel 0, id 0, lun 0, type 0
Jun 8 21:56:04 ix12-2 kernel: scst: Attached SCSI target mid-level at
scsi14, channel 0, id 0, lun 0, type 0
Jun 8 21:56:04 ix12-2 kernel: scst: Attached SCSI target mid-level at
scsi15, channel 0, id 0, lun 0, type 0
Jun 8 21:56:04 ix12-2 kernel: scst: Processing thread started, PID 9166
Jun 8 21:56:04 ix12-2 kernel: scst: Init thread started, PID 9167
Jun 8 21:56:04 ix12-2 kernel: scst: Task management thread started, PID
9168
Jun 8 21:56:04 ix12-2 kernel: scst: SCST version 1.0.1 loaded
successfully (max mem for commands 221MB, per device 88MB)
Jun 8 21:56:04 ix12-2 kernel: scst: Enabled features: TRACING
Jun 8 21:56:04 ix12-2 kernel: scst: Management thread started, PID 9169
Jun 8 21:56:04 ix12-2 kernel: mvsas 0000:03:00.0: mvsas: driver version
0.8.3
Jun 8 21:56:04 ix12-2 kernel: mvsas 0000:03:00.0: PCI INT A ->
Link[LNKA] -> GSI 5 (level, low) -> IRQ 5
Jun 8 21:56:04 ix12-2 kernel: mvsas 0000:03:00.0: setting latency timer
to 64
Jun 8 21:56:05 ix12-2 kernel: /home/brian/scst/mvsas_tgt/mv_spi.c
491:Init flash rom ok,flash type is 0x101.
Jun 8 21:56:06 ix12-2 kernel: /home/brian/scst/mvsas_tgt/mv_spi.c
527:Phy 0 SAS ADDRESS 5005043011ab0000
Jun 8 21:56:06 ix12-2 kernel: /home/brian/scst/mvsas_tgt/mv_spi.c
527:Phy 1 SAS ADDRESS 5005043011ab0000
Jun 8 21:56:06 ix12-2 kernel: /home/brian/scst/mvsas_tgt/mv_spi.c
527:Phy 2 SAS ADDRESS 5005043011ab0000
Jun 8 21:56:06 ix12-2 kernel: /home/brian/scst/mvsas_tgt/mv_spi.c
527:Phy 3 SAS ADDRESS 5005043011ab0000
Jun 8 21:56:06 ix12-2 kernel: mvsas 0000:03:00.0: mvsas: PCI-E x1,
Bandwidth Usage: 2.5 Gbps
Jun 8 21:56:08 ix12-2 kernel: /home/brian/scst/mvsas_tgt/mv_sas.c
1246:port 0 attach dev info is 0
Jun 8 21:56:08 ix12-2 kernel: /home/brian/scst/mvsas_tgt/mv_sas.c
1248:port 0 attach sas addr is 0
Jun 8 21:56:08 ix12-2 kernel: /home/brian/scst/mvsas_tgt/mv_sas.c
1246:port 1 attach dev info is 0
Jun 8 21:56:08 ix12-2 kernel: /home/brian/scst/mvsas_tgt/mv_sas.c
1248:port 1 attach sas addr is 0
Jun 8 21:56:08 ix12-2 kernel: /home/brian/scst/mvsas_tgt/mv_sas.c
1246:port 2 attach dev info is 0
Jun 8 21:56:08 ix12-2 kernel: /home/brian/scst/mvsas_tgt/mv_sas.c
1248:port 2 attach sas addr is 0
Jun 8 21:56:08 ix12-2 kernel: /home/brian/scst/mvsas_tgt/mv_sas.c
1246:port 3 attach dev info is 0
Jun 8 21:56:08 ix12-2 kernel: /home/brian/scst/mvsas_tgt/mv_sas.c
1248:port 3 attach sas addr is 0
Jun 8 21:56:08 ix12-2 kernel: scsi17 : mvsas
Jun 8 21:56:08 ix12-2 kernel: scst: Target template mvst_scst
registered successfully
At this point I would have expected a new SCSI disk to appear for the
virtual LUN, any thoughts? Thanks.
Brian
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