Re: (ITS#5261) Samba4 can 'hang' OpenLDAP slapd

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On Thu, 2007-12-06 at 18:09 -0800, Howard Chu wrote:

db_stat -CA

I've run this on all the databases. It seems clear to me the issue is with the 'user' db.

[abartlet@naomi source]$ cd /home/data/samba/samba4/SAMBA_4_0/source/st/dc/private/ldap/db/user [abartlet@naomi user]$ db_stat -CA Default locking region information: 16 Last allocated locker ID 0x7fffffff Current maximum unused locker ID 9 Number of lock modes 1000 Maximum number of locks possible 1000 Maximum number of lockers possible 1000 Maximum number of lock objects possible 7 Number of current locks 11 Maximum number of locks at any one time 17 Number of current lockers 18 Maximum number of lockers at any one time 6 Number of current lock objects 9 Maximum number of lock objects at any one time 73 Total number of locks requested 66 Total number of locks released 0 Total number of locks upgraded 8 Total number of locks downgraded 1 Lock requests not available due to conflicts, for which we waited 0 Lock requests not available due to conflicts, for which we did not wait 0 Number of deadlocks 0 Lock timeout value 0 Number of locks that have timed out 0 Transaction timeout value 0 Number of transactions that have timed out 712KB The size of the lock region 0 The number of region locks that required waiting (0%) =3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D= -=3D-=3D-=3D-=3D-=3D-=3D Lock REGINFO information: Lock Region type 5 Region ID __db.005 Region name 0x2aaaaabef000 Original region address 0x2aaaaabef000 Region address 0x2aaaaabef068 Region primary address 0 Region maximum allocation 0 Region allocated Region allocations: 3005 allocations, 0 failures, 0 frees, 1 longest REGION_JOIN_OK Region flags =3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D= -=3D-=3D-=3D-=3D-=3D-=3D Lock region parameters: 163 Lock region region mutex [0/205 0% 360/46912496263136] 1031 locker table size 1031 object table size 584 obj_off 54296 locker_off 0 need_dd =3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D= -=3D-=3D-=3D-=3D-=3D-=3D Lock conflict matrix: 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 1 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 1 1 0 0 1 0 0 0 0 0 1 0 1 1 0 0 0 0 1 1 0 0 1 0 1 0 1 0 0 0 1 1 0 1 1 1 0 1 =3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D= -=3D-=3D-=3D-=3D-=3D-=3D Locks grouped by lockers: Locker Mode Count Status ----------------- Object --------------- 1 dd=3D16 locks held 1 write locks 0 pid/thread 347/46912500832560 =20 1 READ 1 HELD id2entry.bdb handle 0 2 dd=3D15 locks held 0 write locks 0 pid/thread 347/46912500832560 =20 3 dd=3D14 locks held 1 write locks 0 pid/thread 347/46912500832560 =20 3 READ 1 HELD dn2id.bdb handle 0 4 dd=3D13 locks held 0 write locks 0 pid/thread 347/1090525520 =20 5 dd=3D12 locks held 0 write locks 0 pid/thread 347/46912500832560 =20 6 dd=3D11 locks held 0 write locks 0 pid/thread 347/46912500832560 =20 7 dd=3D10 locks held 0 write locks 0 pid/thread 347/46912500832560 =20 8 dd=3D 9 locks held 0 write locks 0 pid/thread 347/1090525520 =20 9 dd=3D 8 locks held 1 write locks 0 pid/thread 347/1090525520 =20 9 READ 1 HELD 0x59310 len: 9 data: 0x010000000000000000 a dd=3D 7 locks held 0 write locks 0 pid/thread 347/1107310928 =20 b dd=3D 6 locks held 1 write locks 0 pid/thread 347/1090525520 =20 b READ 1 HELD objectClass.bdb handle 0 c dd=3D 5 locks held 0 write locks 0 pid/thread 347/1090525520 =20 d dd=3D 4 locks held 0 write locks 0 pid/thread 347/1090525520 =20 e dd=3D 3 locks held 1 write locks 0 pid/thread 347/1090525520 =20 e READ 1 HELD objectCategory.bdb handle 0 f dd=3D 2 locks held 0 write locks 0 pid/thread 347/1090525520 =20 10 dd=3D 1 locks held 0 write locks 0 pid/thread 347/1090525520 =20 8000000b dd=3D 0 locks held 1 write locks 1 pid/thread 347/1090525520 =20 8000000b WRITE 1 WAIT 0x59310 len: 9 data: 0x010000000000000000 8000000b WRITE 1 HELD id2entry.bdb page 1 =3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D= -=3D-=3D-=3D-=3D-=3D-=3D Locks grouped by object: Locker Mode Count Status ----------------- Object --------------- 8000000b WRITE 1 HELD id2entry.bdb page 1

1 READ 1 HELD id2entry.bdb handle 0

3 READ 1 HELD dn2id.bdb handle 0

b READ 1 HELD objectClass.bdb handle 0

e READ 1 HELD objectCategory.bdb handle 0

9 READ 1 HELD 0x59310 len: 9 data: 0x010000000000000000 8000000b WRITE 1 WAIT 0x59310 len: 9 data: 0x010000000000000000

[abartlet@naomi schema]$ pwd /home/data/samba/samba4/SAMBA_4_0/source/st/dc/private/ldap/db/schema

[abartlet@naomi schema]$ db_stat -CA Default locking region information: 9 Last allocated locker ID 0x7fffffff Current maximum unused locker ID 9 Number of lock modes 1000 Maximum number of locks possible 1000 Maximum number of lockers possible 1000 Maximum number of lock objects possible 2 Number of current locks 4 Maximum number of locks at any one time 9 Number of current lockers 9 Maximum number of lockers at any one time 2 Number of current lock objects 4 Maximum number of lock objects at any one time 31 Total number of locks requested 29 Total number of locks released 0 Total number of locks upgraded 4 Total number of locks downgraded 0 Lock requests not available due to conflicts, for which we waited 0 Lock requests not available due to conflicts, for which we did not wait 0 Number of deadlocks 0 Lock timeout value 0 Number of locks that have timed out 0 Transaction timeout value 0 Number of transactions that have timed out 712KB The size of the lock region 0 The number of region locks that required waiting (0%) =3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D= -=3D-=3D-=3D-=3D-=3D-=3D Lock REGINFO information: Lock Region type 5 Region ID __db.005 Region name 0x2aaaaabef000 Original region address 0x2aaaaabef000 Region address 0x2aaaaabef068 Region primary address 0 Region maximum allocation 0 Region allocated Region allocations: 3016 allocations, 0 failures, 11 frees, 1 longest REGION_JOIN_OK Region flags =3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D= -=3D-=3D-=3D-=3D-=3D-=3D Lock region parameters: 163 Lock region region mutex [0/96 0% 363/46912496263136] 1031 locker table size 1031 object table size 584 obj_off 54296 locker_off 0 need_dd =3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D= -=3D-=3D-=3D-=3D-=3D-=3D Lock conflict matrix: 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 1 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 1 1 0 0 1 0 0 0 0 0 1 0 1 1 0 0 0 0 1 1 0 0 1 0 1 0 1 0 0 0 1 1 0 1 1 1 0 1 =3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D= -=3D-=3D-=3D-=3D-=3D-=3D Locks grouped by lockers: Locker Mode Count Status ----------------- Object --------------- 1 dd=3D 0 locks held 1 write locks 0 pid/thread 347/46912500832560 =20 1 READ 1 HELD id2entry.bdb handle 0 2 dd=3D 0 locks held 0 write locks 0 pid/thread 347/46912500832560 =20 3 dd=3D 0 locks held 1 write locks 0 pid/thread 347/46912500832560 =20 3 READ 1 HELD dn2id.bdb handle 0 4 dd=3D 0 locks held 0 write locks 0 pid/thread 347/1098918224 =20 5 dd=3D 0 locks held 0 write locks 0 pid/thread 347/46912500832560 =20 6 dd=3D 0 locks held 0 write locks 0 pid/thread 347/46912500832560 =20 7 dd=3D 0 locks held 0 write locks 0 pid/thread 347/1090525520 =20 8 dd=3D 0 locks held 0 write locks 0 pid/thread 347/1090525520 =20 9 dd=3D 0 locks held 0 write locks 0 pid/thread 347/1098918224 =20 =3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D= -=3D-=3D-=3D-=3D-=3D-=3D Locks grouped by object: Locker Mode Count Status ----------------- Object --------------- 1 READ 1 HELD id2entry.bdb handle 0

3 READ 1 HELD dn2id.bdb handle 0 [abartlet@naomi config]$ pwd /home/data/samba/samba4/SAMBA_4_0/source/st/dc/private/ldap/db/config [abartlet@naomi config]$ db_stat -CA Default locking region information: 9 Last allocated locker ID 0x7fffffff Current maximum unused locker ID 9 Number of lock modes 1000 Maximum number of locks possible 1000 Maximum number of lockers possible 1000 Maximum number of lock objects possible 2 Number of current locks 4 Maximum number of locks at any one time 9 Number of current lockers 9 Maximum number of lockers at any one time 2 Number of current lock objects 4 Maximum number of lock objects at any one time 31 Total number of locks requested 29 Total number of locks released 0 Total number of locks upgraded 4 Total number of locks downgraded 0 Lock requests not available due to conflicts, for which we waited 0 Lock requests not available due to conflicts, for which we did not wait 0 Number of deadlocks 0 Lock timeout value 0 Number of locks that have timed out 0 Transaction timeout value 0 Number of transactions that have timed out 712KB The size of the lock region 0 The number of region locks that required waiting (0%) =3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D= -=3D-=3D-=3D-=3D-=3D-=3D Lock REGINFO information: Lock Region type 5 Region ID __db.005 Region name 0x2aaaaabef000 Original region address 0x2aaaaabef000 Region address 0x2aaaaabef068 Region primary address 0 Region maximum allocation 0 Region allocated Region allocations: 3016 allocations, 0 failures, 11 frees, 1 longest REGION_JOIN_OK Region flags =3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D= -=3D-=3D-=3D-=3D-=3D-=3D Lock region parameters: 163 Lock region region mutex [0/96 0% 366/46912496263136] 1031 locker table size 1031 object table size 584 obj_off 54296 locker_off 0 need_dd =3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D= -=3D-=3D-=3D-=3D-=3D-=3D Lock conflict matrix: 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 1 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 1 1 0 0 1 0 0 0 0 0 1 0 1 1 0 0 0 0 1 1 0 0 1 0 1 0 1 0 0 0 1 1 0 1 1 1 0 1 =3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D= -=3D-=3D-=3D-=3D-=3D-=3D Locks grouped by lockers: Locker Mode Count Status ----------------- Object --------------- 1 dd=3D 0 locks held 1 write locks 0 pid/thread 347/46912500832560 =20 1 READ 1 HELD id2entry.bdb handle 0 2 dd=3D 0 locks held 0 write locks 0 pid/thread 347/46912500832560 =20 3 dd=3D 0 locks held 1 write locks 0 pid/thread 347/46912500832560 =20 3 READ 1 HELD dn2id.bdb handle 0 4 dd=3D 0 locks held 0 write locks 0 pid/thread 347/1115703632 =20 5 dd=3D 0 locks held 0 write locks 0 pid/thread 347/46912500832560 =20 6 dd=3D 0 locks held 0 write locks 0 pid/thread 347/46912500832560 =20 7 dd=3D 0 locks held 0 write locks 0 pid/thread 347/1090525520 =20 8 dd=3D 0 locks held 0 write locks 0 pid/thread 347/1090525520 =20 9 dd=3D 0 locks held 0 write locks 0 pid/thread 347/1115703632 =20 =3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D= -=3D-=3D-=3D-=3D-=3D-=3D Locks grouped by object: Locker Mode Count Status ----------------- Object --------------- 1 READ 1 HELD id2entry.bdb handle 0

3 READ 1 HELD dn2id.bdb handle 0

--=20 Andrew Bartlett http://samba.org/~abartlet/ Authentication Developer, Samba Team http://samba.org Samba Developer, Red Hat Inc.

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