Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Quoting Alex Kuehne <alex at movx.de>: > Hi guys, > > In order to prepare a DRBD cluster for production, I'm playing > around with split brain scenarios. First test worked after > instructions from > http://www.drbd.org/users-guide/s-resolve-split-brain.html, but > second test gives me that error after drbdadm connect: > > kernel: block drbd1: uuid_compare()=-1000 by rule 100 > kernel: block drbd1: Unrelated data, aborting! > > I don't know why both nodes don't like each other anymore. I'm > curios to understand what happened here. > > Here are my data: > > DRBD ver 8.3.10rc2 > > on split brain survivor: > # cat /proc/drbd > version: 8.3.10rc2 (api:88/proto:86-96) > GIT-hash: a38b219864715e807e785488d5907a273f54adb6 build by > root at std11526-vm03, 2011-01-14 07:08:33 > > 1: cs:StandAlone ro:Primary/Unknown ds:UpToDate/DUnknown r----- > ns:0 nr:0 dw:222947 dr:2450 al:25 bm:29 lo:0 pe:0 ua:0 ap:0 ep:1 > wo:b oos:7988 > > on split brain victim: > # cat /proc/drbd > version: 8.3.10rc2 (api:88/proto:86-96) > GIT-hash: a38b219864715e807e785488d5907a273f54adb6 build by > root at std11526-vm03, 2011-01-14 07:08:33 > > 1: cs:StandAlone ro:Secondary/Unknown ds:UpToDate/DUnknown r----- > ns:0 nr:0 dw:0 dr:208 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b oos:0 > > My DRBD conf here: http://p.0wnz.at/205018, global_common.conf is > used as shipped. > > Here is where I suspect the problem: > > kernel: block drbd1: drbd_sync_handshake: > kernel: block drbd1: self > 26B93DADD512C783:65ED83424EBC4E55:C1A7166A8B12AF84:C1A6166A8B12AF85 > bits:2166 flags:0 > kernel: block drbd1: peer > B2D0D9A2D3A1044E:52265F28809CCB48:0001000000000000:06947CB397C2C578 > bits:0 flags:1 > kernel: block drbd1: uuid_compare()=-1000 by rule 100 > kernel: block drbd1: Unrelated data, aborting! > kernel: block drbd1: conn( WFReportParams -> Disconnecting ) > > So what can I do to get both nodes to sync again, without having to > recreate the whole mirror? > > Best regards, > Alex Kuehne Ok for the record I did the following on split brain victim: drbdadm detach drbd-sr1 dd if=/dev/zero of=/dev/sda3 bs=4096 count=1000 drbdadm create-md drbd-sr1 drbdadm up drbd-sr1 where "drbd-sr1" is my DRBD mirror resource. After that everything was working fine again. BR, Alex Kuehne