Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
>>I think this document might help:
>>https://www.drbd.org/en/doc/users-guide-83/s-initial-full-sync
>>or specifically, this command:
>>drbdadm -- --overwrite-data-of-peer primary resource
>I think that will work only for the initial sync and not in this case that data/metadata already exists on the secondary.
>I believe the correct approach is to use the 'invalidate' option on the secondary node:
>http://www.drbd.org/en/doc/users-guide-83/re-drbdadm
>"invalidate
>Forces DRBD to consider the data on the local backing storage device as out-of-sync. Therefore DRBD will copy each and every block from its peer, >to bring the local storage device back in sync."
As Yannis surmised, overwrite-data-of-peer did nothing. When I attempted to invalidate the secondary node, it gave me this error:
0: State change failed: (-15) Need a connection to start verify or resync
I tried to use invalidate-remote on the primary, and it updated the status on the remote disk state to "Inconsistent" instead of unknown:
[root at MCM5-DB4 ~]# cat /proc/drbd
version: 8.3.16 (api:88/proto:86-97)
GIT-hash: a798fa7e274428a357657fb52f0ecf40192c1985 build by phil at Build64R6, 2014-11-24 14:51:37
0: cs:StandAlone ro:Primary/Unknown ds:UpToDate/Inconsistent r----s
ns:0 nr:0 dw:35510152 dr:12229061 al:345086 bm:136845 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:733976668
I also used "outdate" on the secondary, which updated its own disk state to "Outdated":
[root at MCM5-DB5 log]# cat /proc/drbd
version: 8.3.16 (api:88/proto:86-97)
GIT-hash: a798fa7e274428a357657fb52f0ecf40192c1985 build by phil at Build64R6, 2014-11-24 14:51:37
0: cs:WFConnection ro:Secondary/Unknown ds:Outdated/DUnknown C r----s
ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:733976668
I attempted a connect on the primary after each of these changes, each time getting the same error in the logs,
Dec 6 08:14:15 localhost kernel: block drbd0: uuid_compare()=-2 by rule 60
Dec 6 08:14:15 localhost kernel: block drbd0: I shall become SyncTarget, but I am primary!
Dec 6 08:14:15 localhost kernel: block drbd0: conn( WFReportParams -> Disconnecting )
I'm wondering if resetting the meta-data on the secondary might allow me to overwrite-data-of-peer...
Tyler
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