Hi John We try to route infiniband traffic. The IP traffic is routed separately.The two clusters we try to connect are configured differently, one with IP over IB the other one with dedicated ethernet adapters.
Jan Erik On 02/27/2018 10:17 AM, John Hearns wrote:
Jan Erik,
Can you clarify if you are routing IP traffic between the two Infiniband
networks.
Or are you routing Infiniband traffic?
If I can be of help I manage an Infiniband network which connects to other IP
networks using Mellanox VPI gateways, which proxy arp between IB and Ethernet.
But I am not running GPFS traffic over these.
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Sundermann, Jan
Erik (SCC)
Sent: Monday, February 26, 2018 5:39 PM
To: [email protected]
Subject: [gpfsug-discuss] Problems with remote mount via routed IB
Dear all
we are currently trying to remote mount a file system in a routed Infiniband
test setup and face problems with dropped RDMA connections. The setup is the
following:
- Spectrum Scale Cluster 1 is setup on four servers which are connected to the
same infiniband network. Additionally they are connected to a fast ethernet
providing ip communication in the network 192.168.11.0/24.
- Spectrum Scale Cluster 2 is setup on four additional servers which are
connected to a second infiniband network. These servers have IPs on their IB
interfaces in the network 192.168.12.0/24.
- IP is routed between 192.168.11.0/24 and 192.168.12.0/24 on a dedicated
machine.
- We have a dedicated IB hardware router connected to both IB subnets.
We tested that the routing, both IP and IB, is working between the two clusters
without problems and that RDMA is working fine both for internal communication
inside cluster 1 and cluster 2
When trying to remote mount a file system from cluster 1 in cluster 2, RDMA
communication is not working as expected. Instead we see error messages on the
remote host (cluster 2)
2018-02-23_13:48:47.037+0100: [I] VERBS RDMA connecting to 192.168.11.4
(iccn004-gpfs in gpfsstorage.localdomain) on mlx4_0 port 1 fabnum 0 index 2
2018-02-23_13:48:49.890+0100: [I] VERBS RDMA connected to 192.168.11.4
(iccn004-gpfs in gpfsstorage.localdomain) on mlx4_0 port 1 fabnum 0 sl 0 index 2
2018-02-23_13:48:53.138+0100: [E] VERBS RDMA closed connection to 192.168.11.1
(iccn001-gpfs in gpfsstorage.localdomain) on mlx4_0 port 1 fabnum 0 error 733
index 3
2018-02-23_13:48:53.854+0100: [I] VERBS RDMA connecting to 192.168.11.1
(iccn001-gpfs in gpfsstorage.localdomain) on mlx4_0 port 1 fabnum 0 index 3
2018-02-23_13:48:54.954+0100: [E] VERBS RDMA closed connection to 192.168.11.3
(iccn003-gpfs in gpfsstorage.localdomain) on mlx4_0 port 1 fabnum 0 error 733
index 1
2018-02-23_13:48:55.601+0100: [I] VERBS RDMA connected to 192.168.11.1
(iccn001-gpfs in gpfsstorage.localdomain) on mlx4_0 port 1 fabnum 0 sl 0 index 3
2018-02-23_13:48:57.775+0100: [I] VERBS RDMA connecting to 192.168.11.3
(iccn003-gpfs in gpfsstorage.localdomain) on mlx4_0 port 1 fabnum 0 index 1
2018-02-23_13:48:59.557+0100: [I] VERBS RDMA connected to 192.168.11.3
(iccn003-gpfs in gpfsstorage.localdomain) on mlx4_0 port 1 fabnum 0 sl 0 index 1
2018-02-23_13:48:59.876+0100: [E] VERBS RDMA closed connection to 192.168.11.2
(iccn002-gpfs in gpfsstorage.localdomain) on mlx4_0 port 1 fabnum 0 error 733
index 0
2018-02-23_13:49:02.020+0100: [I] VERBS RDMA connecting to 192.168.11.2
(iccn002-gpfs in gpfsstorage.localdomain) on mlx4_0 port 1 fabnum 0 index 0
2018-02-23_13:49:03.477+0100: [I] VERBS RDMA connected to 192.168.11.2
(iccn002-gpfs in gpfsstorage.localdomain) on mlx4_0 port 1 fabnum 0 sl 0 index 0
2018-02-23_13:49:05.119+0100: [E] VERBS RDMA closed connection to 192.168.11.4
(iccn004-gpfs in gpfsstorage.localdomain) on mlx4_0 port 1 fabnum 0 error 733
index 2
2018-02-23_13:49:06.191+0100: [I] VERBS RDMA connecting to 192.168.11.4
(iccn004-gpfs in gpfsstorage.localdomain) on mlx4_0 port 1 fabnum 0 index 2
2018-02-23_13:49:06.548+0100: [I] VERBS RDMA connected to 192.168.11.4
(iccn004-gpfs in gpfsstorage.localdomain) on mlx4_0 port 1 fabnum 0 sl 0 index 2
2018-02-23_13:49:11.578+0100: [E] VERBS RDMA closed connection to 192.168.11.1
(iccn001-gpfs in gpfsstorage.localdomain) on mlx4_0 port 1 fabnum 0 error 733
index 3
2018-02-23_13:49:11.937+0100: [I] VERBS RDMA connecting to 192.168.11.1
(iccn001-gpfs in gpfsstorage.localdomain) on mlx4_0 port 1 fabnum 0 index 3
2018-02-23_13:49:11.939+0100: [I] VERBS RDMA connected to 192.168.11.1
(iccn001-gpfs in gpfsstorage.localdomain) on mlx4_0 port 1 fabnum 0 sl 0 index 3
and in the cluster with the file system (cluster 1)
2018-02-23_13:47:36.112+0100: [E] VERBS RDMA rdma read error
IBV_WC_RETRY_EXC_ERR to 192.168.12.5 (iccn005-ib in
gpfsremoteclients.localdomain) on mlx4_0 port 1 fabnum 0 vendor_err 129
2018-02-23_13:47:36.112+0100: [E] VERBS RDMA closed connection to 192.168.12.5
(iccn005-ib in gpfsremoteclients.localdomain) on mlx4_0 port 1 fabnum 0 due to
RDMA read error IBV_WC_RETRY_EXC_ERR index 3
2018-02-23_13:47:47.161+0100: [I] VERBS RDMA accepted and connected to
192.168.12.5 (iccn005-ib in gpfsremoteclients.localdomain) on mlx4_0 port 1
fabnum 0 sl 0 index 3
2018-02-23_13:48:04.317+0100: [E] VERBS RDMA rdma read error
IBV_WC_RETRY_EXC_ERR to 192.168.12.5 (iccn005-ib in
gpfsremoteclients.localdomain) on mlx4_0 port 1 fabnum 0 vendor_err 129
2018-02-23_13:48:04.317+0100: [E] VERBS RDMA closed connection to 192.168.12.5
(iccn005-ib in gpfsremoteclients.localdomain) on mlx4_0 port 1 fabnum 0 due to
RDMA read error IBV_WC_RETRY_EXC_ERR index 3
2018-02-23_13:48:11.560+0100: [I] VERBS RDMA accepted and connected to
192.168.12.5 (iccn005-ib in gpfsremoteclients.localdomain) on mlx4_0 port 1
fabnum 0 sl 0 index 3
2018-02-23_13:48:32.523+0100: [E] VERBS RDMA rdma read error
IBV_WC_RETRY_EXC_ERR to 192.168.12.5 (iccn005-ib in
gpfsremoteclients.localdomain) on mlx4_0 port 1 fabnum 0 vendor_err 129
2018-02-23_13:48:32.523+0100: [E] VERBS RDMA closed connection to 192.168.12.5
(iccn005-ib in gpfsremoteclients.localdomain) on mlx4_0 port 1 fabnum 0 due to
RDMA read error IBV_WC_RETRY_EXC_ERR index 3
2018-02-23_13:48:35.398+0100: [I] VERBS RDMA accepted and connected to
192.168.12.5 (iccn005-ib in gpfsremoteclients.localdomain) on mlx4_0 port 1
fabnum 0 sl 0 index 3
2018-02-23_13:48:53.135+0100: [E] VERBS RDMA rdma read error
IBV_WC_RETRY_EXC_ERR to 192.168.12.5 (iccn005-ib in
gpfsremoteclients.localdomain) on mlx4_0 port 1 fabnum 0 vendor_err 129
2018-02-23_13:48:53.135+0100: [E] VERBS RDMA closed connection to 192.168.12.5
(iccn005-ib in gpfsremoteclients.localdomain) on mlx4_0 port 1 fabnum 0 due to
RDMA read error IBV_WC_RETRY_EXC_ERR index 3
2018-02-23_13:48:55.600+0100: [I] VERBS RDMA accepted and connected to
192.168.12.5 (iccn005-ib in gpfsremoteclients.localdomain) on mlx4_0 port 1
fabnum 0 sl 0 index 3
2018-02-23_13:49:11.577+0100: [E] VERBS RDMA rdma read error
IBV_WC_RETRY_EXC_ERR to 192.168.12.5 (iccn005-ib in
gpfsremoteclients.localdomain) on mlx4_0 port 1 fabnum 0 vendor_err 129
2018-02-23_13:49:11.577+0100: [E] VERBS RDMA closed connection to 192.168.12.5
(iccn005-ib in gpfsremoteclients.localdomain) on mlx4_0 port 1 fabnum 0 due to
RDMA read error IBV_WC_RETRY_EXC_ERR index 3
2018-02-23_13:49:11.939+0100: [I] VERBS RDMA accepted and connected to
192.168.12.5 (iccn005-ib in gpfsremoteclients.localdomain) on mlx4_0 port 1
fabnum 0 sl 0 index 3
Any advice on how to configure the setup in a way that would allow the remote
mount via routed IB would be very appreciated.
Thank you and best regards
Jan Erik
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-- Karlsruhe Institute of Technology (KIT) Steinbuch Centre for Computing (SCC) Jan Erik Sundermann Hermann-von-Helmholtz-Platz 1, Building 449, Room 226 D-76344 Eggenstein-Leopoldshafen Tel: +49 721 608 26191 Email: [email protected] www.scc.kit.edu KIT – The Research University in the Helmholtz Association Since 2010, KIT has been certified as a family-friendly university.
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