file copy of .couch from 2.x isn't picked up by couchdb 3.3.2

[fr2lancer]

NOTE: # file copy of .couch from 2.x isn't picked up by couchdb 3.3.2

Description

Simply when I copied one of <db_name>.couch file to couchdb 3.3.2
GET '127.0.0.1:5984/<db_name> -> no database error
when I copied _dbs file to couchdb 3,
GET '127.0.0.1:5984/<db_name> -> I can see the detail of <db_name> but number of docs is 0

Admin is set and it works well from scratch.
but when I got to start to data migration with file copying, it didn't seem to work .

Steps to Reproduce

NOTE: # please see above

Expected Behaviour

Couch db 2 file needs to be loaded in couchdb 3 when file copy.

Your Environment

• CouchDB version used:
• Browser name and version:
• Operating system and version:

Additional Context

[nickva]

Are there any errors showing in the logs when the db is opened?

It's mostly likely that the node names in the _dbs are different on the new cluster. Make sure to update those node names to match.

Refer to https://docs.couchdb.org/en/stable/cluster/sharding.html#moving-a-shard and copying a shard section to see how the _dbs metadata is structured and how nodes should be updated.

[fr2lancer]

Thank you so much. I ended up copy whole files.