[DRBD-user] Question about meta-disk option

Lars Ellenberg lars.ellenberg at linbit.com
Thu May 19 12:12:06 CEST 2005

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

On Tue, May 17, 2005 at 10:14:19AM -0600, Corey Edwards wrote:
> On Tue, 2005-05-17 at 09:13 +0800, David Huang wrote:
> > hello
> > 
> > I am using DRBD device with internal meta-disk which is 128MB.
> > What will happen if i stop DRBD service, i mean "drbdadm down disk",
> > will the 128mb space be released, so I am able to access and use the
> > space?   If it is the case, what will happen if I put the DRBD device
> > back online? Do I need to extend another 128MB space for meta-disk
> > use?
> Just like any other filesystem, when you bring it down the space is
> yours for the taking. But you *must have* a meta disk in order to start
> DRBD back up, whether it be another 128MB at the end or a new external
> partition.

The whole point about this meta data is that it is persistent.
So if you do not mean to abandon the drbd device along with its meta
data, don't touch the meta data.
the analogy is something like:
"data" == file contents, "meta data" == filename, permissions, access
and modification times, ...  you remove the "meta data" (directory
content), the data (file content) is still there. but you can not really
use it anymore... so don't do that.

	Lars Ellenberg

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