Can't make <datadir>/etl-temp a mount (so can't use tmpfs etc.)

[softwareplumber]

System information

Erigon version: 2022.99.99-dev-9637b25a

OS & Version: Windows/Linux/OSX

Commit hash : e13a318

Expected behaviour

In docker (or kubernetes, or whatever) should be able to put the etl-temp folder on a separate filesystem (maybe tmpfs or whatever).

Actual behaviour

Application errors out on startup as it does os.RemoveAll on etl-temp, which tries to remove the folder itself, which returns an error if the folder is amount

Steps to reproduce the behaviour

erigon --datadir=/data
where /data/etl-temp is a mount

In backend.go (around line 150):

tmpdir := stack.Config().Dirs.Tmp
if err := **os.RemoveAll(tmpdir);** err != nil { // clean it on startup
	return nil, fmt.Errorf("clean tmp dir: %s, %w", tmpdir, err)
}

[AskAlexSharov]

Is it fixing for you: #4816

[softwareplumber]

LGTM but I just finished for the night - I'll rebuilt tomorrow to make sure.
Many thanks
Jon

[mandrigin]

@softwareplumber ping me if it doesn't help you