Hi all, thank you. It has seemed to me that the solution is to clear the bitmap and let DRBD consider data consistent on both disks. Indeed I followed the steps showed in http://www.drbd.org/users-guide-8.3/re-drbdsetup.html and it works fine!
After I've disabled MD raid and configured DRBD resource based on the former raid disks I started drbd in this way: 1.On both nodes, initialize meta data and configure the device. drbdadm -- --force create-md res 2.They need to do the initial handshake, so they know their sizes. drbdadm up res 3.They are now Connected Secondary/Secondary Inconsistent/Inconsistent. Generate a new current-uuid and clear the dirty bitmap. drbdadm -- --clear-bitmap new-current-uuid res 4.They are now Connected Secondary/Secondary UpToDate/UpToDate. Make one side primary and create a file system. drbdadm primary res Hoping this can help somebody else, Cheers Pierpaolo ---------------------------------------------------------------------- Da: "Florian Haas" flor...@hastexo.com A: "pierpaolo.fasano" pierpaolo.fas...@coritel.it Cc: drbd-user@lists.linbit.com Data Fri, 16 Mar 2012 14:27:00 +0100 Oggetto: Re: [DRBD-user] Switch from MD to DRBD > On Fri, Mar 16, 2012 at 1:32 PM, pierpaolo.fasano > <pierpaolo.fas...@coritel.it> wrote: > > 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? > > http://www.drbd.org/users-guide-8.3/s-using-truck-based-replication.html > > Cheers, > Florian > > -- > Need help with High Availability? > http://www.hastexo.com/now > _______________________________________________ drbd-user mailing list drbd-user@lists.linbit.com http://lists.linbit.com/mailman/listinfo/drbd-user
