Re: FCoE Target naming - help

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On Sat, 2013-07-27 at 09:19 +0200, Tomas Molota wrote:
> Ok Nicholas i finaly have it and it looks like this:
> root@test:~# sg_inq -H /dev/sdb
> standard INQUIRY:
>  00     00 00 05 02 1f b0 00 02  4c 49 4f 2d 4f 52 47 00    ........LIO-ORG.
>  10     49 42 4c 4f 43 4b 00 00  00 00 00 00 00 00 00 00    IBLOCK..........
>  20     34 2e 30 00                                         4.0.
> 
> There are 00 chars instead of 20

Thanks, so this confirms that the previous patch has not been properly
applied and/or updated kernel rebuilt + installed on your target side
setup.

Please double check that the same patch (included below) and updated
target_core_mod.ko are being correctly installed.

Thanks!

--nab

diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c
index 4cb667d..9fabbf7 100644
--- a/drivers/target/target_core_spc.c
+++ b/drivers/target/target_core_spc.c
@@ -97,9 +97,12 @@ spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf)
 
        buf[7] = 0x2; /* CmdQue=1 */
 
-       snprintf(&buf[8], 8, "LIO-ORG");
-       snprintf(&buf[16], 16, "%s", dev->t10_wwn.model);
-       snprintf(&buf[32], 4, "%s", dev->t10_wwn.revision);
+       memcpy(&buf[8], "LIO-ORG ", 8);
+       memset(&buf[16], 0x20, 16);
+       memcpy(&buf[16], dev->t10_wwn.model,
+              min_t(size_t, strlen(dev->t10_wwn.model), 16));
+       memcpy(&buf[32], dev->t10_wwn.revision,
+              min_t(size_t, strlen(dev->t10_wwn.revision), 4));
        buf[4] = 31; /* Set additional length to 31 */
 
        return 0;
root@haakon3:/usr/src/target-pending.git# 


> 
> standard INQUIRY:
>  00     00 00 04 32 5b 18 00 02  46 41 4c 43 4f 4e 20 20    ...2[...FALCON  
>  10     49 50 53 54 4f 52 20 44  49 53 4b 20 20 20 20 20    IPSTOR DISK     
>  20     76 31 2e 30 44 45 59 51  49 31 51 33 57 37 33 58    v1.0DEYQI1Q3W73X
>  30     20 20 20 20 20 20 20 20  00 00 00 40 09 60 02 60            ...@.`.`
>  40     03 20 00 00 00 00 00 00  00 00 00 00 00 00 00 00    . ..............
>  50     00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00    ................
> 
> host7 LUNs:
> Path       Device     Size   Vendor          Model                State   
> 7:0:0:0    sdb       53 GB   LIO-ORG         IBLOCK               running 
> 7:0:0:1    sdc      107 GB   LIO-ORG         IBLOCK               running 
> 7:0:0:2    sdd      161 GB   LIO-ORG         IBLOCK               running 
> 7:0:7:0    sde      429 GB   FALCON          IPSTOR DISK          running 
> 7:0:8:0    sdf      429 GB   FALCON          IPSTOR DISK          running
> 
> 
> S pozdravom / Best regards
>  
> Tomas Molota
> Chief Technology Officer
> 
> 
> Parickova 18, 821 08 Bratislava, Slovakia
> e-mail: tomas.molota@xxxxxxxxxxxxx
> web: www.lightstorm.sk
> phone: +421 2 32 400 011
> cell phone: +421 903 788 100
> 
> -----Original Message-----
> From: Nicholas A. Bellinger [mailto:nab@xxxxxxxxxxxxxxx] 
> Sent: Saturday, July 27, 2013 12:00 AM
> To: Tomas Molota
> Cc: 'Roland Dreier'; 'target-devel'
> Subject: Re: FCoE Target naming - help
> 
> On Fri, 2013-07-26 at 22:43 +0200, Tomas Molota wrote:
> > Here is tshark dump from target server. I dont see there inquiry string.
> > 
> 
> Mmmm, strange the capture only contains the incoming (and not outgoing) FCP packets to the FCoE target..
> 
> Would it be possible to just hookup a normal Linux FCoE initiator in order to verify sg_inq -H output..?
> 
> Thanks,
> 
> --nab
> 
> > S pozdravom / Best regards
> >  
> > Tomas Molota
> > Chief Technology Officer
> > 
> > 
> > Parickova 18, 821 08 Bratislava, Slovakia
> > e-mail: tomas.molota@xxxxxxxxxxxxx
> > web: www.lightstorm.sk
> > phone: +421 2 32 400 011
> > cell phone: +421 903 788 100
> > 
> > -----Original Message-----
> > From: Nicholas A. Bellinger [mailto:nab@xxxxxxxxxxxxxxx]
> > Sent: Friday, July 26, 2013 9:41 PM
> > To: Tomas Molota
> > Cc: 'Roland Dreier'; 'target-devel'
> > Subject: Re: FCoE Target naming - help
> > 
> > On Fri, 2013-07-26 at 21:03 +0200, Tomas Molota wrote:
> > > Nope, its not in /dev/ in any way, only where i found something 
> > > about it is in 
> > > /sys/devices/pci0000:00/0000:00:02.0/0000:04:00.0/host100/rport-100:0-4/ etc..
> > 
> > Mmmm..
> > 
> > > Problem is that wireshark will not help in this combination, becouse 
> > > linux is FCoE target, but FalconStor is pure FC initiator with 
> > > modified qla2x00 driver.
> > 
> > Why is it not possible to capture ethernet packets from the FCoE target using wireshark..?  
> > 
> > http://wiki.wireshark.org/FCoE
> > 
> > --nab
> > 
> 
> 
> 


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