Re: SCSI target mode LOR

Scott Long wrote:
>> BTW, will you work on CAM, target mode support, or 4G/MP safety of any 
>> of the two?
> CAM: yes
> target mode: yes
> 4G/SMP: yes
Hmm. Is it christmas, or something? :)

This is absolutely great news! Do you have any deeper details?

BTW, this is what I got on 6-STABLE with two HP BL25p connected to each 
other with a single FC loop:

target:
CPU states:  3.0% user,  0.0% nice, 59.9% system, 15.4% interrupt, 21.7% 
idle

initiator:
dT: 0.502  flag_I 500000us  sizeof 288  i -1
  L(q)  ops/s    r/s   kBps   ms/r    w/s   kBps   ms/w   %busy Name
     2    261    147  18869    6.7    114  14534    8.6   99.5| da1
     2    265    149  19124    6.7    116  14789    8.6  100.9| da2
     2    275    157  20144    6.3    118  15044    8.3  100.0| da3
     2    273    155  19889    6.3    118  15044    8.4  100.0| da4
     2    267    153  19634    6.4    114  14534    8.6  100.0| da5
     2    277    157  20144    6.3    120  15299    8.3  100.7| da6
     2    263    151  19379    6.6    112  14279    8.7   99.9| da7
     2    267    153  19634    6.5    114  14534    8.7  100.2| da8

The machines have two Opteron 252, 8G of RAM (running with 4G because of 
isp (I guess)) and a Qlogic 2312 dual port 2G FC adapter (only one port 
utilized).

On the target I did 8 malloc backed RAM disks and shared them with 
scsi_target. On the initiator, I do this (just blindly testing for now):
dd if=/dev/zero of=/dev/daX bs=1024k
dd if=/dev/daX of=/dev/zero bs=1024k
simultaneously for the 8 LUNs.

-- 
Attila Nagy                                   e-mail: Attila.Nagy_at_fsn.hu
Free Software Network (FSN.HU)                 phone: +3630 306 6758
http://www.fsn.hu/