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Re: MDB_TOOL mode vs. large mdb_env_set_maxreaders()?
Hallvard Breien Furuseth wrote:
Require it to be valid - how? We could try reading the maxreaders out of it,
but how do we know that it's actually valid?
If an lmdb application configures a non-default maxreaders,
this setting is ignored if a tool like mdb_copy is already
running (maybe from crontab).
I suggest mdb_copy & co should use an MDB_TOOL env flag
which requires the lockfile (if any) to be valid, and only
partly reinitializes it. The upcoming MDB_ROBUST flag might
also make use of this. An alternative would be to stuff
this into the metapages, but that seems less flexible.
-- Howard Chu
CTO, Symas Corp. http://www.symas.com
Director, Highland Sun http://highlandsun.com/hyc/
Chief Architect, OpenLDAP http://www.openldap.org/project/