[DRBD-user] Resizing without active peer

Michael Rhyner michael.rhyner at stepping-stone.ch
Tue Sep 9 11:51:24 CEST 2008

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

Hello drbd users

I use DRBD, but have one storage system at the moment, it's planned to 
add the peer later, so we set up our logical volumes alrady on top of 
DRBD. We use a stacked setup, means underlying EVMS - DRBD - EVMS.

Now we would like to enlarge the DRBD space of resource "r2" by 
enlarging the underlaying EVMS volume.

cat /proc/drbd shows this:
  2: cs:WFConnection st:Primary/Unknown ds:UpToDate/DUnknown C r---
     ns:0 nr:0 dw:40807895 dr:12598 al:10086 bm:6253 lo:0 pe:0 ua:0 ap:0
	resync: used:0/61 hits:0 misses:0 starving:0 dirty:0 changed:0
	act_log: used:0/3833 hits:40796120 misses:10124 starving:0 dirty:38 

So we resize the underyling EVMS volume from 100 GB to 150 GB, then 
execute this command: drbdadm resize r2
As assumed, the drbd disk device shows still only 100 GB within EVMS.
I know that connection state should be "Connected", but is there a 
possibility to circumvent this situation and nevertheless enlarge the 
volume on-line, because I don't have a peer yet, and therefore I 
wouldn't risk to render something inconsistent.

Many thanks for an advice if I could do something.


Michael Rhyner

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