[FAB-18191] Remove contents of leveldb dir instead of the dir itself when dropping dbs

[wenjianqiao]

Signed-off-by: Wenjian Qiao wenjianq@gmail.com

Type of change

• Improvement

Description

When dropping a leveldb, remove all contents of the directory instead of the directory itself.

Additional details

This is common code for upgrade-dbs, rebuild, reset, and rollback. It does not impact ledger rebuild function. The change is requested because some leveldb directories (e.g., StateLevelDB) may be mounted and therefore cannot be deleted.

Related issues

https://jira.hyperledger.org/browse/FAB-18191

[wenjianqiao]

/ci-run

[github-actions]

AZP build triggered!

[wenjianqiao]

/ci-run

[github-actions]

AZP build triggered!

[wenjianqiao]

/ci-run

[github-actions]

AZP build triggered!

[lindluni]

@Mergifyio backport release-2.2

[mergify]

Command backport release-2.2: failure

No backport have been created

• Backport to branch release-2.2 failed

Cherry-pick of adb5884 has failed:

On branch mergify/bp/release-2.2/pr-1828
Your branch is up to date with 'origin/release-2.2'.

You are currently cherry-picking commit adb588403.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:

	modified:   common/ledger/blkstorage/reset.go
	modified:   core/ledger/kvledger/drop_dbs.go
	modified:   core/ledger/kvledger/rebuild_dbs_test.go
	modified:   core/ledger/kvledger/tests/rebuild_test.go
	modified:   core/ledger/kvledger/tests/reset_test.go
	modified:   core/ledger/kvledger/tests/rollback_test.go
	modified:   core/ledger/kvledger/tests/v1x_test.go

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)

	both modified:   core/ledger/kvledger/tests/env.go
	deleted by us:   internal/fileutil/fileutil.go
	deleted by us:   internal/fileutil/fileutil_test.go
	both modified:   internal/peer/node/rebuild_dbs_test.go
	both modified:   internal/peer/node/reset_test.go