Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On 16/3/12 1:29 PM, Florian Haas wrote: > On Fri, Mar 16, 2012 at 10:36 AM, France<mailinglists at isg.si> wrote: >> Hi, >> >> i'm hitting a bug in drbd, with latest CentOs and drbd 8.3.12 using GFS2 on >> top with cman and rgmanager. >> >> Here is the simplest method to have it occur. >> 1. Start drbd on node s2 >> 2. Start drbd on node s3 >> They sync up: >> [root at s3 ~]# cat /proc/drbd >> version: 8.3.12 (api:88/proto:86-96) >> GIT-hash: e2a8ef4656be026bbae540305fcb998a5991090f build by dag at Build64R6, >> 2011-11-20 10:57:03 >> 0: cs:Connected ro:Primary/Primary ds:UpToDate/UpToDate C r----- >> ns:0 nr:45060 dw:45056 dr:660 al:0 bm:11 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b >> oos:0 >> 3. Start cman on s2& s3, so i can use gfs2: cluster is up OK: >> [root at s3 ~]# cman_tool status >> Version: 6.2.0 >> Config Version: 8 >> Cluster Name: stor >> Cluster Id: 61164 >> Cluster Member: Yes >> Cluster Generation: 140 >> Membership state: Cluster-Member >> Nodes: 2 >> Expected votes: 1 >> Total votes: 2 >> Node votes: 1 >> Quorum: 1 >> Active subsystems: 7 >> Flags: 2node >> Ports Bound: 0 >> Node name: s3alt.c.XX.si >> Node ID: 3 >> Multicast addresses: 239.192.238.219 239.192.0.2 >> Node addresses: 192.168.168.3 10.31.0.42 >> 4. Start gfs2 on both nodes: >> Mar 16 10:29:41 s3 kernel: GFS2 (built Mar 7 2012 00:54:51) installed >> Mar 16 10:29:41 s3 kernel: GFS2: fsid=: Trying to join cluster "lock_dlm", >> "stor:drbdstor" >> Mar 16 10:29:41 s3 kernel: dlm: Using SCTP for communications > That's the root cause of your problem. > > This is a known issue, and although it's apparently DRBD that's > causing this panic, its own code isn't to blame for this. > DLM-over-SCTP isn't fully supported, and unless you can entice (i.e. > pay) someone to fix it, you won't get this to work reliably. > > Sadly, it's apparently impossible to force DLM-over-TCP for multihomed > hosts, so the only way to work around this seems to be to just run the > DLM on box with a single (possibly bonded) network interface, silly as > that may sound. > > A more detailed discussion of this issue is here: > > http://www.mail-archive.com/drbd-user@lists.linbit.com/msg04492.html > > Hope this helps. > > Cheers, > Florian > Thank you for your reply Florian.