core/state/snapshot: detect and clean up dangling storage snapshot in generation (#24811)
* core/state/snapshot: check dangling storages when generating snapshot
* core/state/snapshot: polish
* core/state/snapshot: wipe the last part of the dangling storages
* core/state/snapshot: fix and add tests
* core/state/snapshot: fix comment
* README: remove mentions of fast sync (#24656)
Co-authored-by: Marius van der Wijden <m.vanderwijden@live.de>
* core, cmd: expose dangling storage detector for wider usage
* core/state/snapshot: rename variable
* core, ethdb: use global iterators for snapshot generation
* core/state/snapshot: polish
* cmd, core/state/snapshot: polish
* core/state/snapshot: polish
* Update core/state/snapshot/generate.go
Co-authored-by: Martin Holst Swende <martin@swende.se>
* ethdb: extend db test suite and fix memorydb iterator
* ethdb/dbtest: rollback changes
* ethdb/memorydb: simplify iteration
* core/state/snapshot: update dangling counter
* core/state/snapshot: release iterators
* core/state/snapshot: update metrics
* core/state/snapshot: update time metrics
* metrics/influxdb: temp solution to present counter meaningfully, remove it
* add debug log, revert later
* core/state/snapshot: fix iterator panic
* all: customized snapshot iterator for backward iteration
* core, ethdb: polish
* core/state/snapshot: remove debug log
* core/state/snapshot: address comments from peter
* core/state/snapshot: reopen the iterator at the next position
* ethdb, core/state/snapshot: address comment from peter
* core/state/snapshot: reopen exhausted iterators
Co-authored-by: Tbnoapi <63448616+nuoomnoy02@users.noreply.github.com>
Co-authored-by: Marius van der Wijden <m.vanderwijden@live.de>
Co-authored-by: Martin Holst Swende <martin@swende.se>
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