Hi Dietmar, hi Alexandre,
> Second, why do you think 'writethrough' is required for DRBD? > VM drives are often get corrupted when using any mode with write cache enabled. Only directsync and writethrough do not produce the issue. Doesn't matter if DRBD in master-master or master-slave mode. Lars Ellenberg explains here <http://www.gossamer-threads.com/lists/drbd/users/25946#25946> why this happens. Best regards, Stanislav
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