Hi All,
I am a new user of DRBD. I am trying to use DRBD to send disk updates to a
backup disk at a configuration rate in an asynchronous manner. From the DRBD
documentation it looks like i should be able to do this if i use Protocol A.
But when i write a file onto the partition that is being backed up by DRBD i
continue to see that the network traffic is very high inspite of me setting
the sync rate.
Here is my /etc/drbd.d/global_common.conf
global {
usage-count yes;
}
common {
}
and /etc/drbd.d/r0.res
resource r0 {
protocol A;
syncer {
rate 1M;
}
on obelix27 {
device /dev/drbd1;
disk /dev/sda1;
address 192.168.245.27:7789;
meta-disk internal;
}
on obelix28 {
device /dev/drbd1;
disk /dev/sda1;
address 192.168.245.28:7789;
meta-disk internal;
}
}
I have ubuntu 11.10 with linux kernel 3.0.0-12-generic. I installed the
userland part of DRBD using apt-get which is version 8.3.
I have tried issuing the drbdadm syncer r0 command. I am writing data on the
partition using
dd if=/dev/zero of=/mnt/more/file.dat count=1024 bs=1048576 and i am
measuring the network traffic using ifstat. Inspite of my setting the sync
rate to 1MB i continue to see 10 MB traffic.
What am i doing wrong ?
Thanking you,
Rahul
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