On Aug 4, 2010, at 9:12 AM, Steve Thompson wrote:
New to DRBD; using it with two Dell PE2900 systems, CentOS 5.5 64-
bit. Two questions:
(1) I am using dual back-to-back gigabits with mtu=9000 for
replication with bonding in balance-rr mode with no issues. The
documentation suggests that active-backup mode be used. I'm getting
an iperf performance across this link of 1.97 Gbits/sec, and a drbd
sync of a single volume gets about 133 MB/sec, which is just a hair
quicker than bonnie++ tells me that this file system can block-
write. I'm interested in why the active-backup recommendation, and
other folks' experiences with bonding.
I recall seeing a lot of dropped packets when doing drbd replication
over bonded crossover cables in balance-rr mode. Things were fine
under normal circumstances, and drops showed up when I really loaded
the primary. active-backup gave me enough throughput, so I switched.
That was on HP DL380s with Centos 5.5. I don't recall which ethernet
driver was in use.
alex
_______________________________________________
drbd-user mailing list
[email protected]
http://lists.linbit.com/mailman/listinfo/drbd-user
