Yes, I think we need it for vz9, the patch can be applied directly to vz9.
-----Original Message----- From: Konstantin Khorenko <khore...@virtuozzo.com <mailto:khore...@virtuozzo.com>> Date: Friday, 18 August 2023 at 1:40 AM To: Kui Liu <kui....@acronis.com <mailto:kui....@acronis.com>>, Devel <devel@openvz.org <mailto:devel@openvz.org>> Cc: Alexey Kuznetsov <kuz...@acronis.com <mailto:kuz...@acronis.com>> Subject: Re: [PATCH RH7] fs/fuse kio: adjust rdma connection parameters Do we need it for vz9 as well? -- Best regards, Konstantin Khorenko, Virtuozzo Linux Kernel Team On 17.08.2023 17:45, Kui Liu wrote: > In RoCE network, packet loss and dealy due to congestion can happen > > quite often. We need to tolerate such event. So increase retry_count > > and rnr_retry_count to 7 to allow NIC to retry operations when an > > error happens, instead of returning the error directly which causes > > the connection to be aborted. > > Signed-off-by: Liu Kui <kui....@acronis.com <mailto:kui....@acronis.com>> > > --- > > fs/fuse/kio/pcs/pcs_rdma_conn.c | 4 ++-- > > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/fs/fuse/kio/pcs/pcs_rdma_conn.c b/fs/fuse/kio/pcs/pcs_rdma_conn.c > > index 4db903151de0..7339b1466d3a 100644 > > --- a/fs/fuse/kio/pcs/pcs_rdma_conn.c > > +++ b/fs/fuse/kio/pcs/pcs_rdma_conn.c > > @@ -44,8 +44,8 @@ conn_param_init(struct rdma_conn_param *cp, struct > pcs_rdmaio_conn_req *cr, > > cp->initiator_depth = min_t(int, U8_MAX, > cmid->device->attrs.max_qp_init_rd_atom); > > cp->flow_control = 1; /* does not matter */ > > - cp->retry_count = 0; /* # retransmissions when no ACK received */ > > - cp->rnr_retry_count = 0; /* # RNR retransmissions */ > > + cp->retry_count = 7; /* # retransmissions when no ACK received */ > > + cp->rnr_retry_count = 7; /* # RNR retransmissions */ > > } > > static int pcs_rdma_cm_event_handler(struct rdma_cm_id *cmid, > > -- > > 2.32.0 (Apple Git-132) > _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel
