Christian Schwarz b33f670b9d [#316] endpoint / replication protocol: more robust step-holds and replication cursor management ... - drop HintMostRecentCommonAncestor rpc call - it is wrong to put faith into the active side of the replication to always make that call (we might not trust it, ref pull setup) - clean up step holds + step bookmarks + replication cursor bookmarks on send RPC instead - this makes it symmetric with Receive RPC - use a cache (endpoint.sendAbstractionsCache) to avoid the cost of listing the on-disk endpoint abstractions state on every step The "create" methods for endpoint abstractions (CreateReplicationCursor, HoldStep) are now fully idempotent and return an Abstraction. Notes about endpoint.sendAbstractionsCache: - fills lazily from disk state on first `Get` operation - fill from disk is generally only attempted once - unless the `ListAbstractions` fails, in which case the fill from disk is retried on next `Get` (the current `Get` will observe a subset of the actual on-disk abstractions) - the `Invalidate` method is called - it is a global (zrepl process-wide) cache fixes #316		2020-05-19 11:30:02 +02:00
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driver	[#307] add package trace, integrate it with logging, and adopt it throughout zrepl	2020-05-19 11:30:02 +02:00
logic	[#316] endpoint / replication protocol: more robust step-holds and replication cursor management	2020-05-19 11:30:02 +02:00
report	new features: {resumable,encrypted,hold-protected} send-recv, last-received-hold	2020-02-14 22:00:13 +01:00
design.md	endpoint: refactor, fix stale holds on initial replication failure, zfs-abstractions subcmd, more efficient ZFS queries	2020-04-18 12:26:03 +02:00
replication.go	replication: refactor driving logic (no more explicit state machine)	2019-03-13 15:00:40 +01:00