Robert Love wrote:
> On Mon, 2009-08-10 at 12:07 -0700, Joe Eykholt wrote:
>> libfc receives PLOGIs from switches which are trying to discover what
>> kind of devices are present, and from other initiators to find out
>> if we're a target.
>>
>> As an initiator, some argue we don't need to handle incoming PLOGI
>> requests, and we currently reject them from unknown remote ports,
>> but accept them is we're in the middle of a PLOGI to the remote port.
>>
>> For eventual target implementations, we want to handle them always.
>>
>> For incoming PLOGI, don't fail if the rport_priv doesn't exist.
>> Just create it and go become READY without going through PRLI. If
>> PRLI occurs, then our roles will be set and we'll become READY again.
>>
>> Also, allow incoming PRLI in RTV state.
>>
>> Signed-off-by: Joe Eykholt <[email protected]>
>> ---
> Hi Joe,
>
> I'm having problems with this patch. I don't have many details at this
> point. What I see is that after a 'create' the debug_logging shows the
> stack doing this-
>
> 14 09:33:59 localhost kernel: [82642.117998] host212: rport ce0300:
> Received a PRLI accept
> Aug 14 09:33:59 localhost kernel: [82642.118208] host212: rport ce0300:
> Port entered RTV state from PRLI state
> Aug 14 09:33:59 localhost kernel: [82642.118438] host212: xid 35:
> Exchange timer armed
> Aug 14 09:33:59 localhost kernel: [82642.118678] host212: xid 35:
> f_ctl 90000 seq 1
> Aug 14 09:33:59 localhost kernel: [82642.118917] host212: rport ce0300:
> Received a RTV reject
BTW, the RTV reject is normal. Many targets don't support it.
> Aug 14 09:33:59 localhost kernel: [82642.119127] host212: rport ce0300:
> Port is Ready
> Aug 14 09:33:59 localhost kernel: [82642.119349] host212: rport ce0300:
> work event 1
>
> rport ce0300 is a target. At this point the initiator just sits there. I
> do not see any LUNs with 'fdisk -l'. I see this message a few seconds
> later, but at this point I think it's unrelated-
>
> Aug 14 09:34:17 localhost kernel: [82660.023560] host212: xid 4:
> Exchange timed out
>
> The system will stay without LUNs until I see this message-
>
> Aug 14 09:34:59 localhost kernel: [82701.952295] rport-212:0-1: blocked
> FC remote port time out: removing target and saving binding
>
> which is somehow triggering SCSI to start sending SCSI commands.
>
> Aug 14 09:34:59 localhost kernel: [82701.952892] host212: xid 3d:
> f_ctl 90000 seq 1
> Aug 14 09:34:59 localhost kernel: [82701.953110] host212: xid 3d:
> f_ctl 90000 seq 2
> Aug 14 09:34:59 localhost kernel: [82701.953393] host212: xid 45:
> f_ctl 90000 seq 1
> Aug 14 09:34:59 localhost kernel: [82701.953614] host212: xid 45:
> f_ctl 90000 seq 2
> Aug 14 09:34:59 localhost kernel: [82701.953832] scsi 212:0:1:0:
> Direct-Access DGC RAID 5 0326 PQ: 0 ANSI: 4
> Aug 14 09:34:59 localhost kernel: [82701.954351] sd 212:0:1:0: Attached
> scsi generic sg1 type 0
> Aug 14 09:34:59 localhost kernel: [82701.954448] host212: xid 2:
> f_ctl 90000 seq 1
> Aug 14 09:34:59 localhost kernel: [82701.954523] host212: xid a:
> f_ctl 90000 seq 1
> Aug 14 09:34:59 localhost kernel: [82701.954593] host212: xid 12:
> f_ctl 90000 seq 1
> Aug 14 09:34:59 localhost kernel: [82701.954596] host212: xid 12:
> f_ctl 90000 seq 2
> Aug 14 09:34:59 localhost kernel: [82701.954606] sd 212:0:1:0: [sdb]
> 8388608 512-byte logical blocks: (4.29 GB/4.00 GiB)
>
> I'll poke around in your patch and try to figure out what's going on. I
> would appreciate it if you could take a look too.
>
> Thanks, //Rob
>
I'll take a look.
Joe
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