Re: qla2xxx: issues when creating a new target port

[Chris Boot <bootc@bootc.net>]

[-- Attachment #1: Type: text/plain, Size: 1881 bytes --]

On 05/03/13 22:15, Chris Boot wrote:
> I'll see if I can get enough hardware and time together to test this
> over the weekend to confirm everything I said above and gather the logs
> with the error logging enabled. I'll keep you posted.

I have run some tests against 3.8.2, and attached the logs.

I can only replicate the problems I ran into with the following sequence 
of events:

1. Link on the qla246x target must be down to start with (tested with 
QLA2460 and QLA2464).
2. /qla2xxx create 21:00:00:1b:32:11:a8:24
3. disable
4. luns/ create /backstores/iblock/test
5. acls/ create 10:00:00:06:2b:11:3f:a1
6. enable
7. Plug in the link to an initiator.

Even with 'set global auto_enable_tpgt=false', at step 3 the port comes 
up enabled. It seems I remembered wrongly that disabling the target port 
does not successfully disable it:

jones-hdd bootc # cat 
/sys/kernel/config/target/qla2xxx/21\:00\:00\:1b\:32\:11\:a8\:24/tpgt_1/enable 

1
jones-hdd bootc # echo 0 > 
/sys/kernel/config/target/qla2xxx/21\:00\:00\:1b\:32\:11\:a8\:24/tpgt_1/enable
jones-hdd bootc # cat 
/sys/kernel/config/target/qla2xxx/21\:00\:00\:1b\:32\:11\:a8\:24/tpgt_1/enable 

0

Once the target is configured with a LUN and ACL, enabled, and the link 
brought up by an initiator, the initiator fails to see any LUNs and 
eventually times out. The debug logging shows interesting lines such as:

Mar  8 21:06:59 jones-hdd kernel: [  183.441093] qla2xxx 
[0000:01:00.0]-f821:4: New command while device ffff8801a1b51400 is 
shutting down
Mar  8 21:06:59 jones-hdd kernel: [  183.441096] qla2xxx 
[0000:01:00.0]-e859:4: qla_target: Unable to send command to target for 
req, ignoring.

I definitely think there is a bug in there, and it feels like it's 
triggered by disabling the target port with the link down - but I'm only 
guessing at this point.

Cheers,
Chris

-- 
Chris Boot
bootc@bootc.net


[-- Attachment #2: kern.log.gz --]
[-- Type: application/x-gzip, Size: 67275 bytes --]