Hi David,
These patches have been running in my testing environment for quite
some time now. (since prior to the series first being posted to the
list)
I have reviewed the changes and tested the following functionality to
be working correctly as added by the patch series:
1) Disconnection from target using sysfs delete
2) Fast failover using dm-mulitpath or mdadm multipath by either
physically removing connection or disabling port.
ib_srp did not like this prior to patchset - failover could take as
long as 120-180 seconds.
Adjusting fast_io_fail and dev_loss parameters in sysfs proved very
effective in tuning this behaviour.
3) Use of the /sys/class/{srp_hosts,srp_remote_ports} shortcuts have
been very useful for automation and monitoring of the initiator.
In my testing this patchset has greatly increased the durablity of the
combination of ib_srp and SCST's ib_srpt under failure conditions.
I have stress tested this environment and executed disconnect commands
under I/O and other extranous conditions and have not experienced any
kernel panics etc.
I highly recommend these patches for inclusion and would be willing to
assist in testing wherever I can.
Kind regards,
Joseph.
On 7 February 2012 12:36, Dave Dillow <[email protected]> wrote:
> On Mon, Feb 06, 2012 at 11:16:25AM -0500, Bart Van Assche wrote:
>> On Sat, Jan 14, 2012 at 1:36 PM, Bart Van Assche <[email protected]> wrote:
>> > This patch series makes the ib_srp driver better suited for use in a H.A.
>>
>> Do you have any review comments about this patch series ?
>
> I haven't had a chance to review it yet. I had hoped to over the
> weekend, but the $DAYJOB intrudes even there. :(
>
> --
> Dave Dillow
> National Center for Computational Science
> Oak Ridge National Laboratory
> (865) 241-6602 office
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