This commit adds high-level functions for creating and loading-from
incremental snapshots, plus all low-level functions required to perform
those tasks. This commit **does not** add taking incremental snapshots
as part of a running validator, nor starting up a node with an
incremental snapshot; just laying ground work.
Additionally, `snapshot_utils` and `serde_snapshot` have been
refactored to use a common code paths for the different snapshots.
Also of note, some renaming has happened:
1. Snapshots are now either `full_` or `incremental_` throughout the
codebase. If not specified, the code applies to both.
2. Bank snapshots now are called "bank snapshots"
(before they were called "slot snapshots", "bank snapshots", or
just "snapshots"). The one exception is within `Bank`, where they
are still just "snapshots", because they are already "bank
snapshots".
3. Snapshot archives now have `_archive` in the code. This
should clear up an ambiguity between bank snapshots and snapshot
archives.
1. Added both options for measuring space usage using total accounts usage and for individual store shrink ratio using an enum. Validator CLI options: --accounts-shrink-optimize-total-space and --accounts-shrink-ratio
2. Added code for selecting candidates based on total usage in a separate function select_candidates_by_total_usage
3. Added unit tests for the new functions added
4. The default implementations is kept at 0.8 shrink ratio with --accounts-shrink-optimize-total-space set to true
Fixes#17544
* Account for possibility of cache flush in load()
* More cleaning
* More cleaning
* Remove unused method and some comment cleaning
* Fix typo
* Make the detected impossible purge race panic()!
* Finally revert to original .expect()
* Fix typos...
* Add assertion for max_root for easier reasoning
* Reframe races with LoadHint as possible opt.
* Fix test
* Make race bug tests run longer for less flaky
* Delay the clone-in-lock slow path even for RPC
* Make get_account panic-free & add its onchain ver.
* Fix rebase conflicts...
* Clean up
* Clean up comment
* Revert fn name change
* Fix flaky test...
* fmt...
Co-authored-by: Ryo Onodera <ryoqun@gmail.com>
Gossip and other places repeatedly de-serialize vote-state stored in
vote accounts. Ideally the first de-serialization should cache the
result.
This commit adds new VoteAccount type which lazily de-serializes
VoteState from Account data and caches the result internally.
Serialize and Deserialize traits are manually implemented to match
existing code. So, despite changes to frozen_abi, this commit should be
backward compatible.
* Re-use accounts_db stores
Creating files and dropping mmap areas can be expensive
* Add test for storage finder
Can encounter an infinite loop when the store is too small, but
smaller than the normal store size.
* Fix storage finding
* Check for strong_count == 1
* try_recycle helper
* fix rewards points
* fixups
* * verify that we don't spend more in rewards than we've allocated for rewards
* purge f64s from calculations that could be done with integers
* test typical values
* simplify iteration over delegations some
* fixups
* Use try_from
* Add a comment for commission_split()
* Add assertion to detect inconsistent reward dist.
* Fix vote_balance_and_staked
* Don't overwrite accounts with stale copies
* Fix CI...
* Add tests for vote_balance_and_staked
* Add test for the determinism of update_rewards
* Revert "Don't overwrite accounts with stale copies"
This reverts commit 9886d085a69d695f48970f48f2f567e62ba05414.
* Make stake_delegation_accounts to return hashmap
Co-authored-by: Ryo Onodera <ryoqun@gmail.com>
* Move bank (de)serialisation logic from bank and snapshot_utils to serde_snapshot.
Add sanity assertions between genesis config and bank fields on deserialisation.
Atomically update atomic bool in quote_for_specialization_detection().
Use same genesis config when restoring snapshots in test cases.
* Tidy up namings and duplicate structs to version
* Apply struct renames to tests
* Update abi hashes
Co-authored-by: Ryo Onodera <ryoqun@gmail.com>