Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Fri, Oct 12, 2007 at 08:56:39PM +0200, Peter P GMX wrote: > I am using ext3 filesystem on top of drbd - on top of lvm2 - on top of > raid 1 hard disks. > > "what exactly do you mean by "detach"?" > I checked it again to be more precise. When I change data on machine A I > have to unmount the drbd volume on machine B and then mount it again in > order to refelect the changes. > > The strange thing is that drbd tells me that everything is in sync, but in > fact the filesystem isn't unless I mount and unmount. to use any one file system on more than one node at the same time, you need to use a network sharing file system (nfs, samba, etc.) or a cluster aware file system (GFS, OCFS, etc.). if you use ext3/reiserfs/xfs/ any "conventional" file system on drbd in "allow-two-primaries", concurrently accessing it from both nodes at the same time, it will not work. no, not even read-only. it may crash your machines, and it definetly will scramble your data. this is mentioned in the example config file, in the manpages, and in several other places. repeat. ## you currently are actively scrambling your data. ## ## you currently are actively scrambling your data. ## ## you currently are actively scrambling your data. ## happy cleaning up. -- : Lars Ellenberg Tel +43-1-8178292-55 : : LINBIT Information Technologies GmbH Fax +43-1-8178292-82 : : Vivenotgasse 48, A-1120 Vienna/Europe http://www.linbit.com :