[DRBD-user] DRBD9 sync speed

Adam Goryachev mailinglists at websitemanagers.com.au
Tue Jun 21 00:59:49 CEST 2016

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

On 20/06/16 22:47, Emmanuel Florac wrote:
> Le Sun, 19 Jun 2016 08:56:18 +0200
> Piero Baudino <pbaudino at formatnet.it> écrivait:
>> Hi all,
>> I have a cluster with 2 PVE servers with DRBD9.
>> The replicated volume is about 7 Tb, the disks are 7200 rpm near line
>> SAS. The communications channel for DRBD9 is done via 4 Gbit
>> dedicated network cards in bond configuration (round robbin).
>> I have created a VM with 1 Tb disk for test purpuse in the DRBD
>> volume. After that, DRBD starts sync...
>> The sync speed is about 10 Mbyte/sec
>> The effective network speed misured with IPERF is about 3,6 Gbit/sec
>> Is there a way to increse sync speed ?
>> All the docs about this topic are related to 8.x.y DRBD version....
> See this thread maybe:
> http://www.gossamer-threads.com/lists/drbd/users/27675

Stupid question perhaps, but doesn't that thread also relate to 8.4.x 
rather than 9.0.x ?

Adam Goryachev Website Managers www.websitemanagers.com.au

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