[DRBD-user] Verify

Jeffrey Froman drbd.tcijf at olympus.net
Tue Oct 21 22:10:05 CEST 2008

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

On Tuesday 21 October 2008 11:34:08 am Ben Clewett wrote:
> What I can't work out is how the system knows which side contains
> the good blocks, and which has the bad blocks?

drbd has no idea which blocks are "good" or "bad", only that the 
corresponding blocks differ between nodes.

> Might it be the side which is primary at that time?  Or the side on
> which the verify was run?  Or maybe the side which is
> dis/re-connected, which may indicate the bad or good side?

Whichever node is primary when the nodes are re-connected will be 
considered to contain the "good" data. It's up to you to determine 
that the data on the primary node is, in fact, OK.


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