Gluster users - Jan 2019 - writev: Transport endpoint is not connected

Dear all,

I've been trying to benchmark a gluster file system using the MPIIO API of 
IOR. Almost all of the times I try to run the application with more than 6 
tasks performing I/O (mpirun -n N, for N > 6) I get the error: "writev: 
Transport endpoint is not connected". And then each one of the N tasks 
returns "ERROR: cannot open file to get file size, MPI MPI_ERR_FILE: 
invalid file, (aiori-MPIIO.c:488)".

Does anyone have any idea what's going on?

I'm writing from a single node, to a system configured for stripe over 6 
bricks. The volume is mounted with the options _netdev and transport=rdma. 
I'm using OpenMPI 2.1.2 (I tested version 4.0.0 and nothing changed). IOR 
arguments used: -B -E -F -q -w -k -z -i=1 -t=2m -b=1g -a=MPIIO. Running 
OpenSUSE Leap 15.0 and GlusterFS 5.3. Output of "gluster volume info" 
follows bellow:

Volume Name: gfs
Type: Stripe
Volume ID: ea159033-5f7f-40ac-bad0-6f46613a336b
Status: Started
Snapshot Count: 0
Number of Bricks: 1 x 6 = 6
Transport-type: rdma
Bricks:
Brick1: pfs01-ib:/mnt/data/gfs
Brick2: pfs02-ib:/mnt/data/gfs
Brick3: pfs03-ib:/mnt/data/gfs
Brick4: pfs04-ib:/mnt/data/gfs
Brick5: pfs05-ib:/mnt/data/gfs
Brick6: pfs06-ib:/mnt/data/gfs
Options Reconfigured:
nfs.disable: on


Thanks in advance,

Lindolfo Meira, MSc
Diretor Geral, Centro Nacional de Supercomputa??o
Universidade Federal do Rio Grande do Sul
+55 (51) 3308-3139

On Wed, Jan 23, 2019 at 1:59 AM Lindolfo Meira <meira at cesup.ufrgs.br>
wrote:
> Dear all,
>
> I've been trying to benchmark a gluster file system using the MPIIO API
of
> IOR. Almost all of the times I try to run the application with more than 6
> tasks performing I/O (mpirun -n N, for N > 6) I get the error:
"writev:
> Transport endpoint is not connected". And then each one of the N tasks
> returns "ERROR: cannot open file to get file size, MPI MPI_ERR_FILE:
> invalid file, (aiori-MPIIO.c:488)".
>
> Does anyone have any idea what's going on?
>
> I'm writing from a single node, to a system configured for stripe over
6
> bricks. The volume is mounted with the options _netdev and transport=rdma.
> I'm using OpenMPI 2.1.2 (I tested version 4.0.0 and nothing changed).
IOR
> arguments used: -B -E -F -q -w -k -z -i=1 -t=2m -b=1g -a=MPIIO. Running
> OpenSUSE Leap 15.0 and GlusterFS 5.3. Output of "gluster volume
info"
> follows bellow:
>
> Volume Name: gfs
> Type: Stripe
>
+Dhananjay, Krutika <kdhananj at redhat.com>
stripe has been deprecated. You can use sharded volumes.

> Volume ID: ea159033-5f7f-40ac-bad0-6f46613a336b
> Status: Started
> Snapshot Count: 0
> Number of Bricks: 1 x 6 = 6
> Transport-type: rdma
> Bricks:
> Brick1: pfs01-ib:/mnt/data/gfs
> Brick2: pfs02-ib:/mnt/data/gfs
> Brick3: pfs03-ib:/mnt/data/gfs
> Brick4: pfs04-ib:/mnt/data/gfs
> Brick5: pfs05-ib:/mnt/data/gfs
> Brick6: pfs06-ib:/mnt/data/gfs
> Options Reconfigured:
> nfs.disable: on
>
>
> Thanks in advance,
>
> Lindolfo Meira, MSc
> Diretor Geral, Centro Nacional de Supercomputa??o
> Universidade Federal do Rio Grande do Sul
> +55 (51) 3308-3139_______________________________________________
> Gluster-users mailing list
> Gluster-users at gluster.org
> https://lists.gluster.org/mailman/listinfo/gluster-users
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