[LU-10252] backport change LU-5718 change 12451/12 to b2_8_fe

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Labels: llnl
• Environment: fs/lustre-release-fe
• Severity: 3
• Assignee: Sonia Sharma (Inactive)
• Reporter: Olaf Faaland

Description

We are encountering the issue described above on clients running lustre 2.8 with Omni-Path fabrics.  We would like the patch backported to b2_8_fe.

Console log messages

2017-11-12 10:20:23 [763673.420307] LNetError: 6383:0:(o2iblnd_cb.c:1105:kiblnd_init_rdma()) RDMA has too many fragments for peer 192.168.134.10@o2ib27 (256), src idx/frags: 128/256 dst idx/frags: 128/256
2017-11-12 10:20:23 [763673.438365] LNetError: 6383:0:(o2iblnd_cb.c:434:kiblnd_handle_rx()) Can't setup rdma for PUT to 192.168.134.10@o2ib27: -90
2017-11-12 10:23:00 [763830.403553] Lustre: 8245:0:(client.c:2063:ptlrpc_expire_one_request()) @@@ Request sent has timed out for slow reply: [sent 1510510823/real 1510510823] req@ffff88102df6e300 x1583085670240648/t0(0) o4->lsh-OST0009-osc-ffff881035fb1000@172.19.3.26@o2ib600:6/4 lens 608/448 e 2 to 1 dl 1510510980 ref 2 fl Rpc:X/0/ffffffff rc 0/-1
2017-11-12 10:23:00 [763830.435966] Lustre: lsh-OST0009-osc-ffff881035fb1000: Connection to lsh-OST0009 (at 172.19.3.26@o2ib600) was lost; in progress operations using this service will wait for recovery to complete
2017-11-12 10:23:00 [763830.455086] Lustre: Skipped 42 previous similar messages
2017-11-12 10:23:00 [763830.488005] Lustre: lsh-OST0009-osc-ffff881035fb1000: Connection restored to 172.19.3.26@o2ib600 (at 172.19.3.26@o2ib600)

Issue Links

• is related to: LU-5718 RDMA too fragmented with router