Adds an option to disable fsync for database operations.
This is to make tests faster.

* all: activate pbss

* core/rawdb: fix compilation error

* cma, core, eth, les, trie: address comments

* cmd, core, eth, trie: polish code

* core, cmd, eth: address comments

* cmd, core, eth, les, light, tests: address comment

* cmd/utils: shorten log message

* trie/triedb/pathdb: limit node buffer size to 1gb

* cmd/utils: fix opening non-existing db

* cmd/utils: rename flag name

* cmd, core: group chain history flags and fix tests

* core, eth, trie: fix memory leak in snapshot generation

* cmd, eth, internal: deprecate flags

* all: enable state tests for pathdb, fixes

* cmd, core: polish code

* trie/triedb/pathdb: limit the node buffer size to 256mb

---------
Co-authored-by: Martin Holst Swende <martin@swende.se>
Co-authored-by: Péter Szilágyi <peterke@gmail.com>

* ethdb: use pebble
Co-authored-by: Gary Rong <garyrong0905@gmail.com>

foo

update

* apply suggested changes

* flags: go format

node: fix ddir lookup mistake

accounts/abi/bind: fix go.mod replacement for generated binding

deps: update pebble + with fix 32-bit build

* ethdb/pebble: respect max memtable size

* core/rawdb, ethdb: enable pebble on non-32bit platforms only

* core/rawdb: fix build tags, fix some review concerns

* core/rawdb: refactor methods for database opening

* core/rawdb: remove erroneous build tag

* cmd/geth: fix the flag default handling + testcase

* cmd/geth: improve testing regarding custom backends

* ethdb/pebble, deps: update pebble dependency

* core/rawdb: replace method with Open

* ethdb/pebble: several updates for pebble (#49)

* ethdb/pebble: fix size count in batch

* ethdb/pebble: disable seek compaction

* ethdb/pebble: more fixes

* ethdb, core, cmd: polish and fixes (#50)

* cmd/utils, core/rawdb, ethdb/pebble: address some review concerns

* Update flags.go

* ethdb/pebble: minor refactors

* ethdb/pebble: avoid copy on batch replay

* ethdb: fix compilation flaw

* cmd: fix test fail due to mismatching error message

* cmd/geth, node: rename backingdb to db.engine

---------
Co-authored-by: Jared Wasinger <j-wasinger@hotmail.com>
Co-authored-by: rjl493456442 <garyrong0905@gmail.com>
Co-authored-by: Péter Szilágyi <peterke@gmail.com>

This change ports some changes from the main PBSS PR:

  - get rid of callback function in `trie.Database.Commit` which is not required anymore
  - rework the `nodeResolver` in `trie.Iterator` to make it compatible with multiple state scheme
  - some other shallow changes in tests and typo-fixes

* ethclient/gethclient: improve time-sensitive flaky test

* eth/catalyst: fix (?) flaky test

* core: stop blockchains in tests after use

* core: fix dangling blockchain instances

* core: rm whitespace

* eth/gasprice, eth/tracers, consensus/clique: stop dangling blockchains in tests

* all: address review concerns

* core: goimports

* eth/catalyst: fix another time-sensitive test

* consensus/clique: add snapshot test run function

* core: rename stop() to stopWithoutSaving()
Co-authored-by: Felix Lange <fjl@twurst.com>

Follow-up to PR #25523 to cleanup all relevant tests.

* all: move genesis initialization to blockchain

* core: add one more check

* core: fix tests

This enables the following linters

- typecheck
- unused
- staticcheck
- bidichk
- durationcheck
- exportloopref
- gosec

WIth a few exceptions.

- We use a deprecated protobuf in trezor. I didn't want to mess with that, since I cannot meaningfully test any changes there.
- The deprecated TypeMux is used in a few places still, so the warning for it is silenced for now.
- Using string type in context.WithValue is apparently wrong, one should use a custom type, to prevent collisions between different places in the hierarchy of callers. That should be fixed at some point, but may require some attention.
- The warnings for using weak random generator are squashed, since we use a lot of random without need for cryptographic guarantees.

This commit replaces ioutil.TempDir with t.TempDir in tests. The
directory created by t.TempDir is automatically removed when the test
and all its subtests complete.

Prior to this commit, temporary directory created using ioutil.TempDir
had to be removed manually by calling os.RemoveAll, which is omitted in
some tests. The error handling boilerplate e.g.

	defer func() {
		if err := os.RemoveAll(dir); err != nil {
			t.Fatal(err)
		}
	}

is also tedious, but t.TempDir handles this for us nicely.

Reference: https://pkg.go.dev/testing#T.TempDirSigned-off-by: Eng Zer Jun <engzerjun@gmail.com>

* eth: request ID based message dispatcher

* eth: fix dispatcher cancellation, rework fetchers idleness tracker

* eth/downloader: drop peers who refuse to serve advertised chains

* accounts/abi/bind: fix bounded contracts and sim backend for 1559

* accounts/abi/bind, ethclient: don't rely on chain config for gas prices

* all: enable London for all internal tests

* les: get receipt type info in les tests

* les: fix weird test
Co-authored-by: Martin Holst Swende <martin@swende.se>

* all: add read-only option to database

* all: fixes tests

* cmd/geth: migrate flags

* cmd/geth: fix the compact

* cmd/geth: fix the format

* cmd/geth: fix log

* cmd: add chain-readonly

* core: add readonly notion to freezer

* core/rawdb: add log

* core/rawdb: fix freezer close

* cmd: fix

* cmd, core: construct db

* core: update tests

* core/state/snapshot: introduce snapshot journal version

* core: update the disk layer in an atomic way

* core: persist the disk layer generator periodically

* core/state/snapshot: improve logging

* core/state/snapshot: forcibly ensure the legacy snapshot is matched

* core/state/snapshot: add debug logs

* core, tests: fix tests and special recovery case

* core: polish

* core: add more blockchain tests for snapshot recovery

* core/state: fix comment

* core: add recovery flag for snapshot

* core: add restart after start-after-crash tests

* core/rawdb: fix imports

* core: fix tests

* core: remove log

* core/state/snapshot: fix snapshot

* core: avoid callbacks in SetHead

* core: fix setHead cornercase where the threshold root has state

* core: small docs for the test cases
Co-authored-by: Péter Szilágyi <peterke@gmail.com>

* core: define and test chain reparation cornercases

* core: write up a variety of set-head tests

* core, eth: unify chain rollbacks, handle all the cases

* core: make linter smile

* core: remove commented out legacy code

* core, eth/downloader: fix review comments

* core: revert a removed recovery mechanism