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 andrew.spott@gmail.com wrote:
mdb_dump didn't complain.
-Andrew
On Tue, Nov 19, 2019 at 9:49 AM Howard Chu hyc@symas.com 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/l...
-Andrew
On Sat, Nov 16, 2019 at 7:24 AM Howard Chu <hyc@symas.com <mailto:
hyc@symas.com>> wrote:
Andrew Spott wrote: > I apologize if this is the wrong place to ask this, let me knowif 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 withcompaction 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 datacould 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/