[DRBD-user] speed problems

[Rick Gutierrez]

hi list, i am installing drbd 8.4.x in centos 7 in a couple of boxes,
i need to replicate my mail server, but i am having speed problems in
the replication, i have tried different options within the
configuration and without success.

I have my network at 1gb ethernet, my switch is cisco 2960-S, I am
replicating 1.3TB on 7200RPM disks, but the speed is terrible, very
slow.

version of rpm
drbd84-utils-9.6.0-1.el7.elrepo.x86_64
kmod-drbd84-8.4.11-1.1.el7_6.elrepo.x86_64
drbd84-utils-sysvinit-9.6.0-1.el7.elrepo.x86_64

my setting:

disk {

        c-plan-ahead 0;
                on-io-error detach;
no-disk-flushes ;
        no-disk-barrier;
                c-min-rate 90M;
c-max-rate 120M;

net {

        allow-two-primaries;

        cram-hmac-alg sha1;

        shared-secret  "C2qz2wsx";

max-buffers             36k;

        sndbuf-size            1024k ;

        rcvbuf-size            2048k;

    }

any idea?

-- 
rickygm

http://gnuforever.homelinux.com