[OmniOS-discuss] RSF-1/ZFS panics node when offlining one iSCSI storage mirror

[Guenther Alka]

about iscsiadm modify initiator-node -T conn-login-max=60

You can set lower values but tuning settings depend on rsp-timeout and 
login-delay
so you must set seqentially or together.

http://docs.oracle.com/cd/E36784_01/html/E36836/iscsi-19.html

ps
If you use napp-it pro (16.03 dev), I have added initiator tuning as a 
menu under Comstar > Initiator > Settings


Gea


Am 07.03.2016 um 18:51 schrieb Stephan Budach:
> Hi Dan,
>
> Am 07.03.16 um 15:41 schrieb Dan McDonald:
>>> On Mar 6, 2016, at 9:44 AM, Stephan Budach <stephan.budach at JVM.DE> 
>>> wrote:
>>>
>>> when I noted that one node would panic,
>> AS A RULE -- if you have an OmniOS box panic, you should save off the 
>> corefile (vmdump.N) and be able to share it with the list.  I 
>> understand this may be an RSF-1 panic, BUT if it's not, it'd be nice 
>> to know.
>>
>> You can upload it to uploads.omniti.com if you wish, just request an 
>> upload token.
>>
>> Dan
>>
> thanks - I will keep that in mind and I actually had a core dump 
> available, but since I was testing around, I didn't mean to occupy 
> anyone's time more than absolutely necessary and so I dumoed them.
> Speaking of that incident, I have lowered the iSCSI connection timeout 
> to 60s, which seems to be the lowest value supported by issueing a
>
> iscsiadm modify initiator-node -T conn-login-max=60
>
> and afterwards I used stmfadm offline target on the storage node to 
> cut the target off. This time, the initiator timed out after 60s and 
> that particular zpool changed it's status to degraded without anything 
> happening. I still have to test that under load, but I will probably 
> push that to next weekend.
>
> Thanks,
> Stephan
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