[DRBD-user] Switch from MD to DRBD

Jake Smith jsmith at argotec.com
Fri Mar 16 14:36:46 CET 2012

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

----- Original Message -----
> From: "pierpaolo.fasano" <pierpaolo.fasano at coritel.it>
> To: drbd-user at lists.linbit.com
> Sent: Friday, March 16, 2012 8:32:03 AM
> Subject: [DRBD-user] Switch from MD to DRBD
> Hi,
> I'm in the middle of switching from a software RAID1 based on MD to
> another one based on DRBD but using the same disks.
> I've verified that no data loss occurs during this operation, but I'm
> wondering if it's possible to avoid the initial full synchronization
> between disks since I'm sure the two disks are already mirrored by
> MD.
> Is it possible to achieve it and in which way?

Not sure this is the right answer without further information about your setup - what you have and where you're headed (you have 2 disk MD RAID 1... and are moving one of the disks to a new server? going to have DRBD on top of MD?) but...

You should be able to add the the meta data to the existing array with something similiar to this:

Then removed the mirror drive and do a "truck-based" replication explained here - specifically appropriate case listed under #2:



More information about the drbd-user mailing list