Thread (13 messages) 13 messages, 3 authors, 2018-03-01

Re: v4.16-rc1 + dm-mpath + BFQ

From: Paolo Valente <hidden>
Date: 2018-02-13 18:38:34

Il giorno 12 feb 2018, alle ore 17:31, Bart Van Assche =
[off-list ref] ha scritto:
=20
On 02/11/18 23:35, Paolo Valente wrote:
quoted
Also this smells a little bit like some spurious elevator call.
Unfortunately I have no clue on the cause.  To go on, I need at least
to reproduce it.  In this respect: Bart, could you please tell me how
to setup the offending configuration, and to cause the failure?
Possibly with just one, or at most two PCs.  I don't have fancier hw
at the moment.
=20
Hello Paolo,
=20
Although I expect that it is possible to reproduce this with an =
unmodified v4.16-rc1 kernel, this is how I ran into this issue:
* Clone the for-next branch of https://github.com/bvanassche/linux.
* Build and install that kernel in a virtual machine.
* Clone https://github.com/bvanassche/srp-test.
* Run the following command:
 srp-test/run_tests -c -d -r 10 -t 02-mq -e bfq
=20
Hi Bart,
as a first attempt, I've followed your steps, but got:
Error: could not find sg_reset
expectedly because of dependencies that you are implying in your steps.

So, I have followed the instructions in the srp-test README for the
case "Running the Tests on an Ethernet Setup", directly on a 4.16-rc1.

For ib_srp-backport, I get a lot of warnings like the following one,
at "make install" (preceded by corresponding warnings at the end of
the compilation):
depmod: WARNING: /lib/modules/4.16.0-rc1+/extra/ib_srp.ko needs unknown =
symbol rdma_resolve_addr

Unfortunately, it gets worse while executing "make scst srpt":

  CC [M]  /home/paolo/scst/srpt/src/ib_srpt.o
In file included from /home/paolo/scst/srpt/src/ib_srpt.c:62:0:
/home/paolo/scst/srpt/src/ib_srpt.h:481:8: error: redefinition of =
=E2=80=98struct srp_login_req_rdma=E2=80=99
 struct srp_login_req_rdma {
        ^~~~~~~~~~~~~~~~~~
In file included from /home/paolo/scst/srpt/src/ib_srpt.h:44:0,
                 from /home/paolo/scst/srpt/src/ib_srpt.c:62:
/mnt/linux-dev/linux/include/scsi/srp.h:139:8: note: originally defined =
here
 struct srp_login_req_rdma {
        ^~~~~~~~~~~~~~~~~~

Could you please give me some help, so as to not get lost among these =
issues?

Thanks,
Paolo
Thanks,
=20
Bart.
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