ReOpenLDAP Versions Save

Corresponds to OpenLDAP 2.4.44, but less buggy.

A major huge change is that replication is works properly here (in contrast from OpenLDAP).

Corresponds to OpenLDAP 2.4.41, but less buggy.

In general is a one problem - replication has a enough of bugs inherited from OpenLDAP. Changes may get lost by replication, but more over - a lot of records could be incorrectly deleted inside the replication scope.

Corresponds to OpenLDAP 2.4.40++, but less buggy.

Major changes since PS/003.00:

• mdb_chk tool;
• quorum and limit-concurrent-refresh features;
• some fixes and crutches for replication;

Corresponds to OpenLDAP 2.4.40+, but less buggy.

Major changes:

• fixed ~5K warnings from gcc;
• fixed ~25 critical (segfault) bugs;
• fixed ~25 memory leaks;
• Russian man pages;
• internal memory checker;
• oom-handler for LMDB; ...

The squashed snapshot of OpenLDAP's branch OPENLDAP_REL_ENG_2_4 at the 2015-01-07.

Based on OpenLDAP 2.4.40 and includes second (working) version of LIFO-reclaiming feature. But has a most of bugs that were just inherited from an original OpenLDAP.

Based on OpenLDAP 2.4.38 and includes first (wrong) version of LIFO-reclaiming feature.

Briefly:

1. The first stable release ‎ReOpenLDAP‬ on Great Victory Day!
2. Fixed huge number of bugs. Made large number of improvements.
3. On-line replication works robustly in the mode multi-master.

Currently ReOpenLDAP operates in telco industry throughout Russia:

• few 2x2 multi-master clusters with online replication.
• up to ~100 millions records, up to ~100 Gb data.
• up to ~10K updates per second, up to ~25K searches.

Seems no anyone other LDAP-server that could provide this (replication fails, not reaches required performance, or just crashes).

New:

• slapd: 'keepalive' config option.
• slapd: adds biglock's latency tracer (-DSLAPD_BIGLOCK_TRACELATENCY=deep).
• mdbx: lifo-reclaimig for weak-to-steady conversion.
• contrib: backport - ITS#6826 conversion scripts.
• mdbx: simple ioarena-based benchmark.
• syncrepl: 'require-present' config option.
• syncprov: 'syncprov-showstatus' config option.

Documentation:

• man-ru: 'syncprov-showstatus none/running/all' feature.
• man: libreldap ITS#7506 Properly support DHParamFile (backport).

Major bugs:

• syncrepl: fix RETARD_ALTER when no-cookie but incomming entryCSN is newer.
• mdbx: backport - ITS#8412 fix NEXT_DUP after cursor_del.
• mdbx: backport - ITS#8406 fix xcursors after cursor_del.
• backend-mdb: fix 'forgotten txn' bug.
• syncprov: fix error handling when syncprov_findcsn() fails.
• syncprov: fix rare segfault in search_cleanup().
• backend-bdb/hdb: fix cache segfault.
• syncprov: fix possibility of loss changes.
• syncprov: fix error handling in find-max/csn/present.
• syncprov: fix 'missing present-list' bug.
• syncprov: avoid lock-order-reversal/deadlock (search under si-ops mutex).
• slapd: fix segfault in connection_write().
• mdbx: backport - ITS#8363 Fix off-by-one in mdb_midl_shrink().
• mdbx: backport - ITS#8355 fix subcursors.
• syncprov: avoid deadlock with biglock and/or threadpool pausing.

Minor bugs:

• syncrepl: refine status-nofify for dead/dirty cases.
• syncrepl: more o_dont_replicate for syncprov's mock status.
• syncrepl: don't notify QS_DIRTY before obtain connection.
• syncprov: refine matchops() for search-cleanup case.
• slapd: fix valgrind-checks for sl-malloc.
• liblber: fix hipagut support for realloc.
• backend-ldap: fix/remove gentle-kick.
• mdbx: workaround for pthread_setspecific's memleak.
• mdbx: clarify mdbx_oomkick() for LMDB-mode.
• syncrepl: backport - ITS#8413 don't use str2filter on precomputable filters.
• mdbx: always copy the rest of page (MDB_RESERVE case).
• mdbx: fix nasty/stupid mistake in cmp-functions.
• mdbx: backport - ITS#8393 fix MDB_GET_BOTH on non-dup record.
• slapd: request thread-pool pause only for SLAP_SERVER_MODE.
• slapd: fix backover bug (since 532929a0776d47753377461dcf89ff38aba61779).
• syncrepl: enforce csn/cookie while recovering lost-delete(s).
• syncrepl: fix 'quorum' for mad configurations.
• backend-mdb: fix mdb_opinfo_get() error handling.
• syncrepl: fix 'limit-concurrent-refresh' feature.
• slapd: ignore EBADF in epoll_ctl(DEL).
• syncprov: fix rare assert-failure on race with abandon.
• mdbx: fix mdb_kill_page() for MDB_PAGEPERTURB.
• libldap: backport - ITS#8385 Fix use-after-free with GnuTLS.
• syncprov: fix minor op-memleak.
• syncrepl: don't skipping retarded DELETE-notification with UUID.
• syncrepl: don't replicate glue-ancestors, but not an entry.
• syncrepl: del_nonpresent() - filtering glue entries as usual.
• syncrepl: consider notifications with the same CSN as an 'echo'.
• syncrepl: checking for present-list before delete-nonpresent.
• syncrepl: accepts extra refresh-present in multi-master.
• syncprov: send cookie even if entryCSN available.
• syncprov: oversight refresh-present for multi-master.
• syncprov: fix persistent-search - rework cleanup and release.
• syncprov: don't skips sending DELETE-notify to the originator.
• syncprov: don't filter refresh-resp just by originator.
• slapd: stop scan on self-committed in slap_get_commit_csn().
• syncrepl: enumerates operations to distinguish from each other.
• backend-mdb: fix mistake backport ITS#8226.
• syncrepl: fix & rework compare_cookies().
• syncrepl: fix pre-condition for delete-nonpresent.
• mdbx: mdbx_chk - empty freedb record isn't an error.
• backend-mdb: fix infinite loop in callback removal.
• mdbx: fix percent in mdbx_txn_straggler().
• slapd: fix and make optional ordering of pending-csn queue.
• mdbx: fix madvise() flags, it is not a bitmask.
• mdbx: cleanup inherited errno's bug.
• syncrepl: accept empty incoming cookies if iddqd/idclip is off.
• syncprov: don't skip 1900-sub csn in SS_CHANGED case.
• syncprov: backport - ITS#8365 partially revert ITS#8281.
• backend-mdb: more to avoid races on mi_numads.
• backend-mdb: backport - ITS#8360 fix ad info after failed txn.
• backend-mdb: backport - ITS#8226 limit size of read txns in searches.
• slapd: cleanup bullshit around op->o_csn.
• syncprov: wake waiting mod-ops when handle loop-pause.
• syncprov: don't block mod-ops by waiting fetch-ops when pool-pause pending.
• accesslog: backport - ITS#8351 fix callback init.
• syncprov: mutual fetch/modify - wakes opposite if waiting was broken.
• syncrepl: fix race on cookieState->cs_ref.

Performance:

• mdbx: more likely/unlikely for mdb_node_add.
• slapd: remove crutch-locks from config-backend.
• mdbx: don't memcpy when src eq dest.
• backend-mdb: logs begin/end of OOM, but not an iteration.
• mdbx: refine find_oldest() and oom_kick().
• mdbx: refine/speedup mdb_cmp_memn().
• mdbx: MADV_REMOVE for unallocated space.
• mdbx: extra backlog's page for MDB_LIFORECLAIM.
• mdbx: rework backlog for freeDB deletion.
• mdbx: refine mdb_env_sync0().
• mdbx: refine mdbx_cmp2int().
• mdbx: backport - mdb_drop optimization.
• slapd: remove unused scoped-locks.
• syncrepl: non-modal del_nonpresent().
• syncprov: less locking for mock ContextCSN.
• syncrepl: less debug/logging.
• slapd: less debug/logging for biglock.
• mdbx: more __inline/__hot.
• backend-mdb: less debug/logging for dreamcatcher.
• mdbx: refine mdb_meta_head_r().
• mdbx: refine mdb_env_sync().
• syncrepl: simplify biglock usage in msg-loop.
• slapd: kill bconfig's crutch mutex.
• syncrepl: minor speedup check_for_retard().
• mdbx: msync only used part instead of entire db.

Build:

• backend-mdb: ability to use old/origin liblmdb.
• libldap: ITS#8353 more for OpenSSL 1.1.x compat.
• libldap: ITS#8353 partial fixes (openssl 1.1.x).

Cosmetics:

• mdbx: reporting 'Unallocated' instead of 'Free pages'.
• mdbx: reporting 'detaited' instead of 'reading'.

Other:

• mdbx: be a bit more precise that mdb_get retrieves data (ITS#8386).
• mdbx: adds MDBX_ALLOC_KICK for freelist backlog.
• check MDB_RESERVE against MDB_DUPSORT.
• syncrepl: dead/dirty/refresh/process/ready for quorum-status.
• syncrepl: idclip-resync when present-list leftover after del_nonpresent().
• syncrepl: fix missing strict-refresh in config-unparse.
• syncprov: tracking for refresh-stage of sync-psearches.
• syncprov: jammed & robust sync.
• mdbx: adds MDB_PAGEPERTURB.

For news and changes early than 2016 please refer to ChangeLog

Энкутаташ - New Year's Day in the Ethiopian Orthodox Calendars.

Ethiopia has its own ancient calendar. According to the beliefs of the Ethiopian Orthodox Church, God created the world 5500 years before the birth of Christ and it is 1994 years since Jesus was born. Based on this timeline, we are in the year 7494 of the eighth millennium (or smnTow vh). These are referred to as Amete Alem (]MT ]Lm) in Amharic or “the years of the world”. Era of the world dates from 5493 B.C.