[DRBD-user] can't make node secondary

[J]

I've googled this quite a bit with no real answers to be found.

I have a drbd resource that I can't release. The file system on the 
resource is unmounted. What gives?

# drbdadm secondary rsrvr

0: State change failed: (-12) Device is held open by someone

Command 'drbdsetup 0 secondary' terminated with exit code 11



# dmesg | tail -n20

[242096.437409] block drbd0:   state = { cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate r--- }

[242096.461614] block drbd0:  wanted = { cs:Connected ro:Secondary/Secondary ds:UpToDate/UpToDate r--- }

[242195.104529] block drbd0: State change failed: Device is held open by someone

[242195.118217] block drbd0:   state = { cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate r--- }

[242195.145684] block drbd0:  wanted = { cs:Connected ro:Secondary/Secondary ds:UpToDate/UpToDate r--- }

[242206.186254] block drbd0: State change failed: Device is held open by someone

[242206.200699] block drbd0:   state = { cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate r--- }

[242206.230115] block drbd0:  wanted = { cs:Connected ro:Secondary/Secondary ds:UpToDate/UpToDate r--- }

[242433.986608] block drbd0: State change failed: Device is held open by someone

[242434.001987] block drbd0:   state = { cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate r--- }

[242434.032927] block drbd0:  wanted = { cs:Connected ro:Secondary/Secondary ds:UpToDate/UpToDate r--- }

[244213.359214] block drbd0: State change failed: Device is held open by someone

[244213.374526] block drbd0:   state = { cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate r--- }

[244213.404502] block drbd0:  wanted = { cs:Connected ro:Secondary/Secondary ds:UpToDate/UpToDate r--- }

[244235.672455] block drbd0: State change failed: Device is held open by someone

[244235.687733] block drbd0:   state = { cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate r--- }

[244235.717620] block drbd0:  wanted = { cs:Connected ro:Secondary/Secondary ds:UpToDate/UpToDate r--- }

[244730.313961] block drbd0: State change failed: Device is held open by someone

[244730.329231] block drbd0:   state = { cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate r--- }

[244730.359122] block drbd0:  wanted = { cs:Connected ro:Secondary/Secondary ds:UpToDate/UpToDate r--- }