Bug #8221 mysqld hangs on startup
Submitted: 31 Jan 2005 22:33 Modified: 27 Aug 2005 19:47
Reporter: Dean Grimes Email Updates:
Status: Closed Impact on me:
Category:MySQL Server: InnoDB storage engine Severity:S1 (Critical)
Version:4.1.9 OS:Other (SCO OpenServer 5)
Assigned to: Heikki Tuuri CPU Architecture:Any

[31 Jan 2005 22:33] Dean Grimes
Complied on SCO OpenServer 5.0.7

I have been using MySQL for quite some time using MyISAM tables. I now have need of using InnoDB tables. I am upgrading from 3.23.58 to 4.1.9. Everything compiles and installs and when starting mysqld everything looks OK.

I uncommented the default settings for InnoDB in my.cnf and tried starting mysqld but it appears to just hang and the mysql client acts as if it's hung when you try to run it. It reports no errors. If I use --skip-innodb when starting mysqld, everything works with the existing tables. As far as I can tell, I have implemented all according to the installation documentation.


How to repeat:
mysqld --skip-innodb --skip-bdb --console ->mysqld: ready for connections.
Version: '4.1.9-log'  socket: '/d/mysql/var/mysql.sock'  port: 3307  Source dist

Everything works (except for innodb support)

mysqld  --console -u root                   

No messages are reported. mysqld just sits there.
[1 Feb 2005 13:08] Heikki Tuuri

Please compile mysqld with debug info, run in a debugger, and submit the stack trace, so that we see where it hangs.

It seems to work in some SCO computers, not in others.


[1 Feb 2005 16:48] Dean Grimes
Another interesting note: If I compile with debug, mysqld starts and runs with InnoDB support. If I don't use debug, then mysqld just hangs.
[1 Feb 2005 16:55] Heikki Tuuri

Do you mean that if you do:

CFLAGS="-g -O3" CXXFLAGS="-O3 -g" ./configure


the resulting binary does not hang?

That is rather strange if compiler flags affect this.


[1 Feb 2005 16:59] Dean Grimes
Another thing I'm finding that I need to do in order recompile: I have to remove the entire mysql-4.1.9 tree and then untar fresh from the tarball. If I don't do that I get a 'No rule to make my_init.lo in libmysql' error and the make fails. Simply untaring without removing the tree first doesn't fix it. Looking at the make display, I noticed that when it runs fresh it symbolic links a bunch of files into the libmysql directory. This doesn't happen on subsequent makes.
[1 Feb 2005 17:00] Dean Grimes
Actually, I configured with configure --prefix=/d/mysql --with-debug
[1 Feb 2005 17:03] Heikki Tuuri

what compiler do you use? Please show the exact steps.


[1 Feb 2005 17:39] Dean Grimes
rm -r mysql-4.1.9
tar xvf mysql-4.1.9.tar
cd mysql-4.1.9
configure --prefix=/d/mysql --with-debug

Reading specs from /usr/gnu/lib/gcc-lib/i586-pc-sco3.2v5.0/2.95.3/specs
gcc version 2.95.3 20010315 (release)

I'm able to start mysqld:

(carn700b:root)[/d/mysql/libexec] mysqld --verbose --skip-bdb -u root
050201 11:06:47  InnoDB: Database was not shut down normally!
InnoDB: Starting crash recovery.
InnoDB: Reading tablespace information from the .ibd files...
InnoDB: Restoring possible half-written data pages from the doublewrite
InnoDB: buffer...
050201 11:06:47  InnoDB: Starting log scan based on checkpoint at
InnoDB: log sequence number 0 43716.
InnoDB: Doing recovery: scanned up to log sequence number 0 43716
InnoDB: Last MySQL binlog file position 0 79, file name ./carn700b-bin.000006
050201 11:06:47  InnoDB: Flushing modified pages from the buffer pool...
050201 11:06:47  InnoDB: Started; log sequence number 0 43716
mysqld: ready for connections.
Version: '4.1.9-debug-log'  socket: '/d/mysql/var/mysql.sock'  port: 3307  Sourc
e distribution

If I don't use --with-debug, mysqld just hangs.
[1 Feb 2005 17:44] Heikki Tuuri

please use that CFLAGS... trick to add the debug info in the non-debug binary. 


gdb mysql

When it hangs, send a signal

kill -11 <processnumber here>

to break gdb. It may also be possible to break the gdb execution simply with ctrl-C.


(gdb) bt full

to print the stack trace.


[1 Feb 2005 18:24] Dean Grimes
(carn700b:root)[/d/mysql/libexec] gdb --args mysqld --skip-bdb -u root
GNU gdb 5.2.1
Copyright 2002 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i586-pc-sco3.2v5.0"...
(gdb) run
Starting program: /d/mysql/libexec/mysqld --skip-bdb -u root

Program received signal SIGSEGV, Segmentation fault.
0x800b2e10 in pthread_sigsuspend () from /usr/lib/libgthreads.so
(gdb) bt full
#0  0x800b2e10 in pthread_sigsuspend () from /usr/lib/libgthreads.so
No symbol table info available.
#1  0x800b29b7 in pthread_p_sigsuspend (set=0x0) at signal.c:3381
No locals.
#2  0x800ac796 in pthread_handle_many_process_signals () at signal.c:753
        sig = -2146721376
#3  0x800b74f5 in pthread_sched_new_signals () from /usr/lib/libgthreads.so
No symbol table info available.
#4  0x800b733d in pthread_sched () from /usr/lib/libgthreads.so
No symbol table info available.
#5  0x800aa379 in pthread_cond_wait () from /usr/lib/libgthreads.so
No symbol table info available.
#6  0x082b49e1 in os_event_wait () at os0sync.c:335
        __c = 0
        os_sync_mutex = (struct os_mutex_struct *) 0x844c010
        os_thread_count = 0
        os_event_count = 10000
        os_mutex_count = 2
        os_fast_mutex_count = 10006
        os_sync_mutex_inited = 1
        os_event_list = {count = 10000, start = 0x859e36c, end = 0x844c0fc}
        os_mutex_list = {count = 2, start = 0x844c0d8, end = 0x844c010}
#7  0x082a3251 in sync_array_wait_event (arr=0x844c034, index=0)
    at sync0arr.c:433
---Type <return> to continue, or q <return> to quit---
        cell = (struct sync_cell_struct *) 0x845358c
        event = (struct os_event_struct *) 0x844c0fc
#8  0x082a6fc6 in mutex_spin_wait (mutex=0x843ae80, 
    file_name=0x83ec64f "sync0sync.c", line=233) at sync0sync.c:484
        index = 0
        i = 4
#9  0x082a6044 in mutex_create_func (mutex=0x843ac00, 
    cfile_name=0xffffffff <Address 0xffffffff out of bounds>, cline=1208)
    at sync0sync.c:260
No locals.
#10 0x082aaf21 in sync_init () at sync0sync.c:1208
        i = 105264
#11 0x08178252 in srv_boot () at srv0srv.c:877
No locals.
#12 0x0817ce5f in innobase_start_or_create_for_mysql () at srv0start.c:1105
        ret = (struct buf_pool_struct *) 0x2a28
        create_new_db = 0
        log_file_created = 0
        log_created = 0
        log_opened = 0
        min_flushed_lsn = {high = 0, low = 0}
        max_flushed_lsn = {high = 0, low = 0}
        sum_of_new_sizes = 0
        sum_of_data_file_sizes = 138479840
---Type <return> to continue, or q <return> to quit---
        tablespace_size_in_header = 0
        err = 0
        i = 138615777
        srv_file_per_table_original_value = 0
        mtr = {state = 1819374457, memo = {heap = 0x7261762f, 
    used = 137297967, data = <incomplete type>, base = {count = 138475349, 
      start = 0x1047658, end = 0x8}, list = {prev = 0x7, next = 0x80478d4}}, 
  log = {heap = 0x4, used = 0, data = <incomplete type>, base = {
      count = 138723162, start = 0x8047894, end = 0x8134383}, list = {
      prev = 0x0, next = 0x8436ae0}}, modifications = 1073741824, 
  n_log_recs = 138479552, log_mode = 138479528, start_lsn = {high = 138479540, 
    low = 134510740}, end_lsn = {high = 135480254, low = 138664184}, 
  magic_n = 138479560}
#13 0x08134617 in innobase_init () at ha_innodb.cc:1049
        current_dir = "./"
        err = 10792
        default_path = 0x8431be1 ""
#14 0x0812db0f in ha_init () at handler.cc:260
        have_yes = SHOW_OPTION_YES
        known_extensions = {count = 0, name = 0x8396c33 "known_exts", 
  type_names = 0x0, type_lengths = 0x0}
        sys_table_types = {{type = 0x83968cf "MyISAM", value = 0x840fce0, 
    comment = 0x8396900 "Default engine as of MySQL 3.23 with great performance"
, db_type = DB_TYPE_MYISAM}, {type = 0x83968bf "HEAP", value = 0x840fce0, 
---Type <return> to continue, or q <return> to quit---
    comment = 0x8396937 "Alias for MEMORY", db_type = DB_TYPE_HEAP}, {
    type = 0x8396948 "MEMORY", value = 0x840fce0, 
    comment = 0x8396960 "Hash based, stored in memory, useful for temporary tabl
es", db_type = DB_TYPE_HEAP}, {type = 0x839699a "MERGE", value = 0x840fce0, 
    comment = 0x83969a0 "Collection of identical MyISAM tables", 
    db_type = DB_TYPE_MRG_MYISAM}, {type = 0x83969c6 "MRG_MYISAM", 
    value = 0x840fce0, comment = 0x83969d1 "Alias for MERGE", 
    db_type = DB_TYPE_MRG_MYISAM}, {type = 0x83969e1 "ISAM", 
    value = 0x840c440, 
    comment = 0x8396a00 "Obsolete storage engine, now replaced by MyISAM", 
    db_type = DB_TYPE_ISAM}, {type = 0x8396a30 "MRG_ISAM", value = 0x840c440, 
    comment = 0x8396a40 "Obsolete storage engine, now replaced by MERGE", 
    db_type = DB_TYPE_MRG_ISAM}, {type = 0x83968e1 "InnoDB", 
    value = 0x840c444, 
    comment = 0x8396a80 "Supports transactions, row-level locking, and foreign k
eys", db_type = DB_TYPE_INNODB}, {type = 0x8396abb "INNOBASE", 
    value = 0x840c444, comment = 0x8396ac4 "Alias for INNODB", 
    db_type = DB_TYPE_INNODB}, {type = 0x8396ad5 "BDB", value = 0x840c448, 
    comment = 0x8396ae0 "Supports transactions and page-level locking", 
    db_type = DB_TYPE_BERKELEY_DB}, {type = 0x8396b0d "BERKELEYDB", 
    value = 0x840c448, comment = 0x8396b18 "Alias for BDB", 
    db_type = DB_TYPE_BERKELEY_DB}, {type = 0x8396b26 "NDBCLUSTER", 
    value = 0x840c44c, 
    comment = 0x8396b40 "Clustered, fault-tolerant, memory-based tables", 
---Type <return> to continue, or q <return> to quit---
    db_type = DB_TYPE_NDBCLUSTER}, {type = 0x8396b6f "NDB", value = 0x840c44c, 
    comment = 0x8396b73 "Alias for NDBCLUSTER", db_type = DB_TYPE_NDBCLUSTER}, 
  {type = 0x8396b88 "EXAMPLE", value = 0x840c63c, 
    comment = 0x8396b90 "Example storage engine", 
    db_type = DB_TYPE_EXAMPLE_DB}, {type = 0x8396ba7 "ARCHIVE", 
    value = 0x840c640, comment = 0x8396baf "Archive storage engine", 
    db_type = DB_TYPE_ARCHIVE_DB}, {type = 0x8396bc6 "CSV", value = 0x840c644, 
    comment = 0x8396bca "CSV storage engine", db_type = DB_TYPE_CSV_DB}, {
    type = 0x0, value = 0x0, comment = 0x0, db_type = DB_TYPE_UNKNOWN}}
        ha_row_type = {0x8396100 "", 0x8396bdd "FIXED", 0x8396be3 "DYNAMIC", 
  0x8396beb "COMPRESSED", 0x8396101 "?", 0x8396101 "?", 0x8396101 "?"}
        tx_isolation_typelib = {count = 4, name = 0x8396100 "", 
  type_names = 0x840fe2c, type_lengths = 0x0}
        ha_read_count = 0
        ha_write_count = 0
        ha_delete_count = 0
        ha_update_count = 0
        ha_read_key_count = 0
        ha_read_next_count = 0
        ha_read_prev_count = 0
        ha_read_first_count = 0
        ha_read_last_count = 0
        ha_read_rnd_count = 0
        ha_read_rnd_next_count = 0
---Type <return> to continue, or q <return> to quit---
        ha_discover_count = 0
        ha_commit_count = 0
        ha_rollback_count = 0
        tx_isolation_names = {0x8396bf6 "READ-UNCOMMITTED", 
  0x8396c07 "READ-COMMITTED", 0x8396c16 "REPEATABLE-READ", 
  0x8396c26 "SERIALIZABLE", 0x0}
        known_extensions_id = 0
#15 0x080b23ca in init_server_components () at mysqld.cc:2680
No locals.
#16 0x080b27d8 in main (argc=4, argv=0x8047b14) at mysqld.cc:2959
No locals.
#17 0x0804b1a5 in _start ()
No symbol table info available.
[2 Feb 2005 15:48] Heikki Tuuri

I guess SCO returns a non-standard return value from pthread_mutex_trylock().

I have to tweak configure.in.

Thank you,

[7 Mar 2005 18:55] Dean Grimes

I'm at a point in my project design where I need to decide if I should use InnoDB tables. I need to know if this will be fixed within the next few months. If not, then I'll fore go using InnoDB tables and opt for MySQL tables instead. I would really like to use InnoDB because I need to make the application multi-user. If there is anything you need from me, just let me know.


[2 May 2005 17:34] Heikki Tuuri

Please post what

man pthread_mutex_trylock

prints in SCO Unix.


[5 May 2005 20:58] Cuffiette
Hi Heikki,
I apologize but in SCO package there are not the man pages.
I attached the source code from the SCO Pthread 3.14 osr507 (ftp://ftp.zenez.com/pub/zenez/prgms/FSU-threads-3.14-osr507.tar.gz).
Please look at http://bugs.mysql.com/bug.php?id=3961 also.
I hope that it can be useful.

======== file disp.c ==================================================
 * pthread_mutex_trylock - 
int pthread_mutex_trylock(mutex)
     pthread_mutex_t *mutex;
  if (mutex->protocol == PRIO_PROTECT)
    return slow_mutex_trylock(mutex);
  if (test_and_set(&mutex->lock)) {
    mutex->owner = mac_pthread_self();

============ file mutex.c =============================================
 * pthread_mutex_trylock - Just try to lock the mutex. If 
 * lock succeeds return. Otherwise return right away without 
 * getting the lock. (Fast mutex_trylock without
 * error checks can be found in pthread_sched.S.)
int slow_mutex_trylock(mutex)
int pthread_mutex_trylock(mutex)
     pthread_mutex_t *mutex;

pthread_t p = mac_pthread_self();

  if (mutex == NO_MUTEX)
#if !defined(DRAFT7)
    return -1;
#else /* !DRAFT7 */
#endif /* DRAFT7 */

  if (mutex->protocol == PRIO_PROTECT && p->attr.prio > mutex->prio_ceiling)
#if !defined(DRAFT7)
    return -1;
#else /* !DRAFT7 */
#endif /* DRAFT7 */
#endif /* !NOERR_CHECK */
  if (mutex->lock) {
#if !defined(DRAFT7)
    return -1;
#else /* !DRAFT7 */
#endif /* DRAFT7 */
  mutex->lock = TRUE;
  mutex->owner = p;
  mac_change_lock_prio(mutex, p); 
 if (mutex->protocol == PRIO_PROTECT) 
   mac_change_lock_prio(mutex, p);

====== file opt.S ====================================================
!	int pthread_mutex_trylock(mutex)
!	pthread_mutex_t *mutex;
!	When mutex can be locked immediately, execute as leaf and return 1;
!	otherwise return 0
                                        ! load protocol type of mutex
	ld      [%o0+mutex_protocol],%o1
	cmp     %o1, PRIO_PROTECT	! test if PRIO_PROTECT
	bne     fast_trylock		! yes
	nop                             ! Delay
	save	%sp,-SA(MINFRAME),%sp	! Get a new window
	call	NAME(slow_mutex_trylock)! return(slow_mutex_lock(mutex));
	mov	%i0, %o0		! Delay: Pass parameter
	mov	%o0, %i0		! Return value
	ldstub	[%o0+mutex_lock],%o1	! test_and_set(&mutex->lock)
	tst	%o1			! prev. lock == 0 ?
	bne	mutex_trylocked
	sethi	%hi(NAME(pthread_kern)),%o1	! Get kernel address	
	or	%o1,%lo(NAME(pthread_kern)),%o1
	ld	[%o1+pthread_self],%o1
	st	%o1,[%o0+mutex_owner]	! mutex->owner = mac_pthread_self()
	clr	%o0			! return(0);
	set	NAME(errno),%o1		! errno = EBUSY;
	mov	EBUSY,%o0
	st	%o0,[%o1]
	mov	-1,%o0		! return(-1);
[9 Aug 2005 17:19] Dean Grimes
Has any progress been made on this issue? We will be going to pilot in the first of second week of September. I need to know if this is going to be resolved.

[9 Aug 2005 17:33] Heikki Tuuri

No progress made. Can you empirically check what pthread_mutex_trylock() returns in the SCO-compiled mysqld binary?

MySQL assumes:

  Convert pthread_mutex_trylock to return values according to latest POSIX

  0             If we are able successfully lock the mutex.
  EBUSY         Mutex was locked by another thread
  #             Other error number returned by pthread_mutex_trylock()
                (Not likely)

It is also possible that the hang has some other cause. trylock was just my first guess.


[9 Aug 2005 17:35] Heikki Tuuri

Looking at the code in mutex.c, maybe you should compile with


as defined?


[11 Aug 2005 21:38] Dean Grimes

I compiled the latest version of pthreads and recompiled MySQL but that didn't do the trick. So I tried your suggestion of compiling with DRAFT7 and that seems to have fixed the problem. I'll do some extensive testing next week and if everything is working OK, I'll close this issue. Thanks for pointing me in the right direction.

[12 Aug 2005 14:06] Heikki Tuuri

thank you. I will look if we can add that define of DRAFT7 to the configure.in in SCO.


[12 Aug 2005 14:54] Heikki Tuuri

since you have to compile mutex.c with DRAFT7 defined, it does not help to add the define to MySQL's configure.in.

Maybe we should document here:
that if you use pthreads, you should compile the pthread library with DRAFT7 defined?


[12 Aug 2005 15:27] Dean Grimes
That's correct. I just added it to the compile of the FSU-threads. I edited the Makefile for SCO and added -DDRAFT7 to the CFLAGS. So far everything seems to be OK. I finish my testing by Monday and I expect to close this issue then.

[17 Aug 2005 19:50] Heikki Tuuri

maybe we should add to the manual:

If you use SCO OpenServer 5, you may need to recompile FSU threads with -DDRAFT7 in CFLAGS. Otherwise, InnoDB may hang at a mysqld startup.

Does the above sound sensible? I am no SCO expert.


[18 Aug 2005 12:56] Dean Grimes

Yes, I think that would be a good idea. Also, I upgraded FSU Pthreads from 3.8c to 3.14; which is the latest release. Although I don't believe that had any bearing on the issue. However, all of my testing has indicated that the problem is history. I've tested on SCO OpenServer versions 5.04, 5.06 and 5.07. I have not tested 5.0.5 but I suspect that it would work just fine on that release as well.

Thanks for all your help,

[22 Aug 2005 15:04] Heikki Tuuri
Dear docs team,

please add to:

If you use SCO OpenServer 5, you may need to recompile FSU pthreads with -DDRAFT7
in CFLAGS. Otherwise, InnoDB may hang at a mysqld startup.


[27 Aug 2005 19:47] Paul Dubois
Thank you for your bug report. This issue has been addressed in the
documentation. The updated documentation will appear on our website
shortly, and will be included in the next release of the relevant