On Wed, Feb 15, 2017 at 06:55:52PM +0200, Sagi Grimberg wrote: > > > Started with Linus's tree, applied the change requested by Sagi, built the kernel, rebooted and started the tests. > > > > Linux ibclient 4.10.0-rc8.sagi+ #1 SMP Wed Feb 15 11:09:44 EST 2017 x86_64 x86_64 x86_64 GNU/Linux > > > > Very quickly get to this > > > > [ 180.990285] mlx5_0:dump_cqe:262:(pid 0): dump error cqe > > [ 181.016899] 00000000 00000000 00000000 00000000 > > [ 181.040949] 00000000 00000000 00000000 00000000 > > [ 181.066960] 00000000 00000000 00000000 00000000 > > [ 181.092030] 00000000 0f007806 2500002a bf1913d0 > > [ 181.117254] scsi host2: ib_srp: failed FAST REG status memory management operation error (6) for CQE ffff880bdbe88778 > > [ 196.288933] fast_io_fail_tmo expired for SRP port-2:1 / host2. > > [ 197.090886] scsi host2: ib_srp: reconnect succeeded > > [ 197.127628] scsi host2: ib_srp: failed RECV status WR flushed (5) for CQE ffff8817f09b6f30 > > > > So does not help. > > I think my and Barts suggestion to revert for now is the best way forward. > > I have already tested this in-depth from Bart's tree and its been sent to Doug as V2 of Bart'recent 8 patch series. > > Yea, probably this is the best way forward. > > Bart, I think the change I suggested is still needed regardless, > do you agree? > > Max, Leon, is it possible that the max number of klms pr mr is > less than what reported in device capabilities for page_list_len? I hope no and we will check. I already asked it, but didn't get any response, and I'll repeat it again. ISER has similar code with SG_GAPS, does it work? > > If so, this means that either: > 1. mlx5 needs to expose the minimum between pages and sg elems (sucks) > 2. we need yet another capability for SG_GAPS (sucks^2 because the > whole point was to make it transparent to the user) > 3. mlx5 does not support SG_GAPS (sucks^3 because we now have something > thats not supported by any device). > -- > To unsubscribe from this list: send the line "unsubscribe linux-rdma" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html
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