Re: 5.3-rc8 tests all pass with RDMA/SRP testing

[Bart Van Assche <bvanassche@acm.org>]

On 9/12/19 12:48 PM, Laurence Oberman wrote:
> My usual 3 month SRP test results show all is still well with SRP
> client drivers and multipath.
> I am still using 4.16 for the ib_srpt on the target server.
> 
> 5.3-rc8 ib_srp CX4 100Gbit EDR tests
> direct and unbuffered, large and small I/O sizes
> port recovery with fault injection
> 
> One small observation was that after fault injection it seemed to take
> longer to log back in, in that I needed to extend my sleep in the
> injection script to avoid some multipaths lose all paths.
> 
> I was sleeping 30s between resets prior to this and I would log back in
> quick enough to not lose all paths.
> My sleep is now 60s
> 
> #on ibclient server in /sys/class/srp_remote_ports, using echo 1 >
> delete for the particular port will simulate a port reset.
> 
> #/sys/class/srp_remote_ports
> #[root@ibclient srp_remote_ports]# ls
> #port-1:1  port-2:1
> for d in /sys/class/srp_remote_ports/*
> do
> 	echo 1 > $d/delete
> sleep 60
> done

Hi Laurence,

This is weird. Has this behavior change been observed once or has it 
been observed multiple times? I'm asking because in my tests I noticed 
that there can be variation between tests depending on how much time the 
SCSI error handler spends in its error recovery strategy.

Thanks,

Bart.