In current implementation Blobstor reads objects from the underlying FSTree according to DirNameLen application config value.

If application changes this value, previously stored objects can not be read from the node anymore.

Expected Behavior

Data are still available.

Current Behavior

Node starts as empty.

Possible Solution

Node should either:

• restruct already stored data in FSTree on startup
• allow mixing and have ability to read objects from both dir naming formats

Steps to Reproduce (for bugs)

1. Run NeoFS with storage nodes v0.28.1
2. Restart NeoFS with storage nodes v0.34.0

Context

NeoFS Testnet/Mainnet investigations.

Your Environment

• Version used: v0.28.1 -> v0.34.0