[DRBD-user] Questions about syncing

Felix Frank ff at mpexnet.de
Wed May 11 09:36:54 CEST 2011

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


Hi,

On 05/10/2011 03:17 PM, Lyre wrote:
> Hi all:
> 
> I'm concerning some details about syncing. For example,  the secondary
> was disconnected while new data were wrote to the primary, and then I
> connect the secondary.
> 
> Does drbd sync only  the different parts or all data on the disk ? And

Only (4k-)blocks that contain changes are synced.

> what if I specify --discard-my-data options while connecting?

A full sync is performed. The node on which you discarded the data
receives all the content from the other peer.

> Does drbd support data compression in syncing & replicating?

Not out of the box. You need DRBD Proxy for that.

Contact Linbit Sales if you're interested in the technology.

Cheers,
Felix



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