[DRBD-user] Using secondary

Brian R. Hellman brian at linbit.com
Wed Mar 9 00:11:35 CET 2011

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



On 03/08/2011 10:58 AM, Samson Yeung wrote:
> Hi all,
>
> I'm investigating DRBD and have a question, in case I skipped over a
> config option in the documentation.
>
> In most cases, it absolutely makes sense for reads to be satisfied
> from the primary's local disk because it's fastest. However, in my
> specific case involving busy fileservers and spinning disks, requests
> via the dedicated 10-gig connection between servers and un-busy disks
> on the secondary is faster than reading from the busy disks on the
> primary.
>
> So, does drbd support satisfying read requests by sending the read
> request over the drbd link to the secondary node's disks?
Not today, but in the future: http://www.drbd.org/home/roadmap/

It may happen sooner rather than later with sponsorship ;)


> (I am *not* talking about being able to mount the secondary on the
> secondary machine.)
>
>
> -Samson
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