柏杰 0b0fb9b9e4 avoid data race read volume.IsEmpty (#4574) ...

* avoid data race read volume.IsEmpty

-   avoid phantom read isEmpty for onlyEmpty
-   use `v.DataBackend.GetStat()` in v.dataFileAccessLock scope

* add Destroy(onlyEmpty: true) test

* add Destroy(onlyEmpty: false) test

* remove unused `IsEmpty()`

* change literal `8` to `SuperBlockSize`

2023-06-14 14:39:58 -07:00

4.1 KiB

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