[DRBD-user] DRBD and EXT3 journaling options

Eric Marin eric.marin at utc.fr
Wed Jul 2 11:21:06 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.


Hi,

a quick question for the filesystems experts : I'd like to mount an EXT3 
partition with the 'data=journal' option, for some tests. This partition 
is in use by DRBD (cluster of two nodes).

(First method) Can I stop DRBD on node1, change the journaling mode, 
restart DRBD, and it will resync from node2 ? Then I'd stop DRBD on 
node2, change the journaling mode, restart DRBD, and it would resync 
from node1 ?

(Second method) Perhaps I need to stop both nodes before changing the 
journaling mode, otherwise they won't be able to synchronize, as the 
journal would probably be different on the two nodes. Or perhaps this 
wouldn't work at all... ?

However, since the partition can only be mounted on one node at a time, 
is this even a problem ?

Eric



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