Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
/ 2006-11-27 19:54:38 +0300 \ Igor Yu. Zhbanov: > Hello! > > > I want to better understand how drbd decides what node has more fresh data. > Sometimes after reboots in the cluster there was situation when drbd on > master node (which was in Primary state already) refuses to connect with > drbd on slave node, claiming that "Primary shall become SyncTarget". > Even if I write some files on promary (to make changes on device) it refuses > to connect anyway. > > So, what is generation counters? (I just don't want to grep though drbd > sources. ;-) Is it belongs to whole drbd device or each block has its own > counter? Is it like time stamp or like version number? version 0.7 and before uses "generation counters". the concept is explained in http://www.drbd.org/publications.html drbd_paper_for_NLUUG_2001.pdf (or something like that) and has little changed since. version 8 uses uuid tags. the concept is explained in the drbd8 pdf -- : Lars Ellenberg Tel +43-1-8178292-0 : : LINBIT Information Technologies GmbH Fax +43-1-8178292-82 : : Schoenbrunner Str. 244, A-1120 Vienna/Europe http://www.linbit.com : __ please use the "List-Reply" function of your email client.