[Iscsitarget-devel] command ordering

[Harshal S. <har...@gm...>]

Hello All,

I am curious about what will happen in this scenario?

Scenario A:

say suppose there are four commands pending in the worker threads queue
(Which are enqued in predefined order).
First worker thread comes and removes first command from the queue
maintaining the right order but before submitting
this command context switch happens and another worker thread will come and
willsubmit next command to block layer.
In this way is it possible that commands will be submitted/executed in out
of order manner? And if it is happening then
will it create any problem?

Scenario B:
Multiple commands are submitted to the block layer but when the callback
returns last commands callback returned first
and response is sent in reverse order.. Is it possible and if happens so
then will it create any problem?

-Harshal.