Can I use `mdb_dump | mdb_load` (roughly) to get the db back to a stable state? Any ideas what is going on? I have no idea how to reproduce this bug, so I'm not sure what to put in a bug report... and I can't share the db.
-Andrew On Tue, Nov 19, 2019 at 1:23 PM Andrew Spott <[email protected]> wrote: > mdb_dump didn't complain. > > -Andrew > > On Tue, Nov 19, 2019 at 9:49 AM Howard Chu <[email protected]> wrote: > >> Andrew Spott wrote: >> > When looking at the code for mdb_env_copyfd1 (the copy with compaction >> function), there is this clause[0]: >> > >> > if (rc == MDB_SUCCESS && root != new_root) { >> > rc = MDB_INCOMPATIBLE; /* page leak or corrupt DB */ >> > } >> > >> > >> > Since this happens at the end of the function, and I'm seeing the >> mdb_copy -c takes a while, I figured this was the error that I was seeing. >> > >> > If this isn't it, then what am I looking at? If it is a corrupt DB, is >> there anything I can do to figure out how to fix this? >> >> Try using mdb_dump to get a backup instead, see if it succeeds or >> complains. >> > >> > [0] >> https://github.com/LMDB/lmdb/blob/c3e6b4209eed13af4a3670e5f04f42169c08e5c6/libraries/liblmdb/mdb.c#L10311-L10312 >> > >> > -Andrew >> > >> > On Sat, Nov 16, 2019 at 7:24 AM Howard Chu <[email protected] <mailto: >> [email protected]>> wrote: >> > >> > Andrew Spott wrote: >> > > I apologize if this is the wrong place to ask this, let me know >> if there is someplace better. >> > > >> > > So, when doing a `mdb_copy -c`, I've run into the error message: >> > > >> > > mdb_copy: copying failed, error -30784 (MDB_INCOMPATIBLE: >> Operation and DB incompatible, or DB flags changed) >> > > >> > > When looking at the mdb_copy man page, it says that mdb_copy with >> compaction might fail if the database has a 'page leak'. >> > > >> > > Since that appears to be what has happened... >> > >> > The error message you got has nothing to do with a page leak. >> > >> > > can anyone tell me what that means? Does this mean that the data >> could be corrupted? How do I fix this? >> > > >> > > Thanks! >> > > >> > > -Andew >> > >> > >> > -- >> > -- Howard Chu >> > CTO, Symas Corp. http://www.symas.com >> > Director, Highland Sun http://highlandsun.com/hyc/ >> > Chief Architect, OpenLDAP http://www.openldap.org/project/ >> > >> >> >> -- >> -- Howard Chu >> CTO, Symas Corp. http://www.symas.com >> Director, Highland Sun http://highlandsun.com/hyc/ >> Chief Architect, OpenLDAP http://www.openldap.org/project/ >> >
