RBD in Squid and Beyond
summary
RBD in Squid shows concrete fixes and measurable wins: a diff-trace API optimization cuts a synthetic QEMU 500 GB backup from ~560s to ~3s with an exclusive lock (≈60s without), snapshot-based mirroring gains corruption fixes for object maps under IO and scheduler/kernel resilience for blocked clients, BlueStore reduces CPU spent on snap-trimming, and group snapshots gain clone usability. Live-migration adds cross-cluster and NBD-source imports and namespace-to-namespace mirroring for multi-tenancy. Tentacle work targets consistency-group snapshot mirroring, PG upmap and CRUSH rule support, and continued performance and NVMe-oF improvements.
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