https://bugs.openldap.org/show_bug.cgi?id=9619
Issue ID: 9619
Summary: mdb_env_copy2 with MDB_CP_COMPACT in mdb.master3
produces corrupt mdb file
Product: LMDB
Version: 0.9.29
Hardware: All
OS: Windows
Status: UNCONFIRMED
Severity: normal
Priority: ---
Component: liblmdb
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
When copying an LMDB database with mdb_env_copy2 with the MDB_CP_COMPACT with
mdb.master3, the resulting mdb file seems to be corrupt and when using it in
LMDB, I get segmentation faults. Copying without the compacting flag seems to
work fine. I apologize, I know this is not a very good issue report, as I
haven't had a chance to actually narrow this down to a more
reproducible/isolated case, or look for how to patch. I thought I would report
in case there are any ideas on what could cause this. The segmentation faults
always seem to be memory write faults (as opposed to try fault on trying to
read). Or perhaps the current backup/copying functionality is eventually going
to be replaced by incremental backup/copying anyway
(https://twitter.com/hyc_symas/status/1315651814096875520). I'll try to update
this if I get a chance to investigate more, but otherwise feel free to
ignore/consider low-priority since the work around is easy.
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