Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
> 2/ Does it matter if both nodes have 2 differents versions of drbd > (are 0.7.10 and 0.7.19 compatible without losing data) ? Are the data > copied safely on both nodes ? My experience has been that it works fine. Upgrading doesnt change the ondisk structures if the versions (api:78/proto:74) don't change.