Vadim Yatsenko: PolarFS: Disk-Paxos RW Leases That Keep Shared Storage Out of Split-Brain

T2Covered by 1 source · first reported by Planet PostgreSQL at 24 Oct, 00:00 UTC

PolarDB separates compute from storage. Many machines can reach the same block device. Exactly one of them may write to it. A second read-write mount corrupts data, and there is no recovery from it.