Gary Lockyer 89041a6d18 lib ldb: lmdb clear stale readers on write txn start ...

In use process failures and Bind9 shut downs leave stale entries in the
lmdb reader table.  This can result in lmdb filling it's database file, as
the free list can not be reclaimed due to the stale reader.

In this fix we call mdb_reader_check at the start of each transaction,
to free any stale readers.  As the default maximum number of readers is
127, this should not impact on performance to any great extent.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14330

Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Tue Mar 31 01:26:07 UTC 2020 on sn-devel-184

2020-03-31 01:26:07 +00:00

..

ABI

ldb: change the version to 2.2.0 for Samba 4.13

2020-02-26 23:11:39 +00:00

common

ldb: Use ARRAY_DEL_ELEMENT() in ldb_dn_set_extended_component()

2020-03-26 14:43:32 +00:00

docs

ldb: make ldb a top level library for Samba 4.0

2011-07-05 17:24:47 +10:00

examples

ldb: make ldb a top level library for Samba 4.0

2011-07-05 17:24:47 +10:00

include

ldb: Change pack format defines to enum

2019-08-20 03:40:29 +00:00

ldb_key_value

ldb: Use ARRAY_DEL_ELEMENT() in ldb_kv_index_del_value()

2020-03-26 14:43:32 +00:00

ldb_ldap

ldb_ldap: use ldb_msg API to add elements

2019-05-10 01:15:18 +00:00

ldb_ldb

ldb: Add MDB support to ldb://

2018-05-23 02:27:12 +02:00

ldb_map

ldb_map: check a return value (CID 241354)

2019-05-09 22:39:27 +00:00

ldb_mdb

lib ldb: lmdb clear stale readers on write txn start

2020-03-31 01:26:07 +00:00

ldb_sqlite3

CVE-2018-1140 ldb: Check for ldb_dn_get_casefold() failure in ldb_sqlite

2018-08-14 13:57:15 +02:00

ldb_tdb

lib ldb key value backends: Add nested txn support

2019-06-21 04:27:12 +00:00

man

Spelling fixes s/overrided/overridden/

2019-04-02 01:12:11 +00:00

modules

ldb modules: paged_search checks control is not NULL (CID 241355)

2019-05-09 22:39:27 +00:00

nssldb

ldb: make ldb a top level library for Samba 4.0

2011-07-05 17:24:47 +10:00

tests

lib ldb: lmdb clear stale readers on write txn start

2020-03-31 01:26:07 +00:00

tools

ldb: ensure that ldbedit operates like ldbmodify: set DONT_CREATE_DB

2020-03-02 02:47:30 +00:00

web

ldb: make ldb a top level library for Samba 4.0

2011-07-05 17:24:47 +10:00

_ldb_text.py

ldb/tests/_ldb_text: remove unused imports

2018-10-25 21:45:55 +02:00

configure

build: Move python detection back into waf (instead of in configure and Makefile)

2018-12-14 14:40:19 +01:00

Doxyfile

ldb: make ldb a top level library for Samba 4.0

2011-07-05 17:24:47 +10:00

examples.dox

ldb: make ldb a top level library for Samba 4.0

2011-07-05 17:24:47 +10:00

ldb.pc.in

ldb: make ldb a top level library for Samba 4.0

2011-07-05 17:24:47 +10:00

mainpage.dox

ldb: make ldb a top level library for Samba 4.0

2011-07-05 17:24:47 +10:00

Makefile

Search for location of waf script

2019-02-26 10:39:24 +01:00

pyldb_util.c

pyldb: rename pyldb_Dn_AsDn() to pyldb_Dn_AS_DN()

2019-07-10 04:32:13 +00:00

pyldb-util.pc.in

lib/ldb: Enable use of a python3 pyldb-util system library

2017-03-10 07:31:10 +01:00

pyldb.c

py3: Remove #define PyInt_FromLong PyLong_FromLong

2020-03-23 19:12:43 +00:00

pyldb.h

pyldb: rename pyldb_Dn_AsDn() to pyldb_Dn_AS_DN()

2019-07-10 04:32:13 +00:00

README_gcov.txt

ldb: make ldb a top level library for Samba 4.0

2011-07-05 17:24:47 +10:00

wscript

ldb build: Remove some PEP8 warnings from wscript

2020-03-22 04:39:36 +00:00