On-Line 5.0 Weird Crash

The other evening we had a database crash on us, it said that a dbspace disappeared. Upon further evaluation, we noticed nothing wrong and restarted the engine and everything was fine. The following listings "online.log" and "tbstat -a" are listings for a on-line crash on 8/24/93. There was no indication of any other problem except that the engine stopped (ie no strange messages in the /usr/adm/message file). Does anyone know what is happening? We did not have any problems with the disk drive (rootdbs takes whole drive) and we just restarted the engine with no problems. tbcheck -cc worked fine. tbcheck -ce worked fine. tbcheck -pc worked fine. tbcheck -pt worked fine. Thanks in advance, +----------------------------------------------------------------------------+ | . . | | | ... ... | Darin Melin | | ..... ..... | Software Engineer, DBA | | .. ... .. | Business Systems Integration Group | | . . . | Semiconductor Products Sector | | | Mesa, AZ | | Motorola, Inc. | melin@hermes1.sps.mot.com Phone:(602)-655-3627 | | | VP - Arizona Informix Users Group | +----------------------------------------------------------------------------+ | 'connectionLESS IS MORE' -- Data Broker | +----------------------------------------------------------------------------+ Wed Aug 24 00:00:32 1994 00:00:32 Checkpoint Completed 00:30:53 Checkpoint Completed 01:01:17 Checkpoint Completed 01:31:31 Checkpoint Completed 01:46:33 Checkpoint Completed 02:04:04 Checkpoint Completed 02:22:52 Checkpoint Completed 02:37:10 Checkpoint Completed 02:51:43 Checkpoint Completed 03:05:12 Checkpoint Completed 03:15:56 Checkpoint Completed 03:26:58 Checkpoint Completed 03:41:04 Checkpoint Completed 03:57:13 Checkpoint Completed 04:17:09 Checkpoint Completed 04:27:27 Checkpoint Completed 04:43:09 Checkpoint Completed 04:53:55 Checkpoint Completed 05:05:11 Checkpoint Completed 05:14:28 Checkpoint Completed 05:21:13 Checkpoint Completed 05:30:20 Checkpoint Completed 05:39:51 Checkpoint Completed 05:46:55 Checkpoint Completed 05:55:08 Checkpoint Completed 06:05:57 Checkpoint Completed 06:17:09 Checkpoint Completed 06:27:43 Checkpoint Completed 06:42:24 Checkpoint Completed 06:54:17 Checkpoint Completed 06:56:24 Logical Log 245 Complete 07:07:02 Checkpoint Completed 07:18:23 Checkpoint Completed 07:29:36 Checkpoint Completed 07:41:34 Checkpoint Completed 07:50:31 Checkpoint Completed 08:00:30 Checkpoint Completed 08:12:11 Checkpoint Completed 08:27:12 Checkpoint Completed 08:40:43 Checkpoint Completed 08:51:48 Checkpoint Completed 09:08:47 Checkpoint Completed 09:25:58 Checkpoint Completed 09:37:36 Checkpoint Completed 09:48:08 Checkpoint Completed 09:57:08 Checkpoint Completed 10:06:51 Checkpoint Completed 10:17:22 Checkpoint Completed 10:31:49 Checkpoint Completed 10:46:56 Checkpoint Completed 11:01:03 Checkpoint Completed 11:12:31 Checkpoint Completed 11:23:52 Checkpoint Completed 11:37:22 Checkpoint Completed 11:46:26 Checkpoint Completed 11:55:30 Checkpoint Completed 12:07:58 Checkpoint Completed 12:18:30 Checkpoint Completed 12:30:02 Checkpoint Completed 12:41:36 Checkpoint Completed 12:48:59 Checkpoint Completed 12:53:00 Checkpoint Completed 12:55:57 Logical Log 246 Complete 13:08:46 Checkpoint Completed 13:19:56 Checkpoint Completed 13:30:06 Checkpoint Completed 13:46:21 Checkpoint Completed 14:00:51 Checkpoint Completed 14:10:32 Checkpoint Completed 14:22:25 Checkpoint Completed 14:38:06 Checkpoint Completed 14:47:44 Checkpoint Completed 15:06:33 Checkpoint Completed 15:17:30 Checkpoint Completed 15:26:52 Checkpoint Completed 15:37:15 Checkpoint Completed 15:47:32 Checkpoint Completed 15:56:57 Checkpoint Completed 16:08:15 Checkpoint Completed 16:30:00 Checkpoint Completed 16:46:54 Checkpoint Completed 16:56:48 Checkpoint Completed 16:56:52 I/O error 'read': expect 2048 actual -1 addr 0x509e5 errno 14 retrys 0 16:56:52 I/O error 'read': expect 2048 actual -1 addr 0x509e5 errno 14 retrys 1 16:56:52 I/O error, Primary Chunk '/dev/dbdisk1' -- Offline 16:56:52 I/O read() chunk 1, pagenum 330213, pagecnt 1 --> errno = 14 16:56:52 INFORMIX-OnLine Must ABORT Root chunk down. 16:56:52 -- Online Aborting -- us=100023f8, pid=27503, uid=5000 16:56:52 INFORMIX-OnLine entering ABORT mode!!! 16:56:53 -- Online Aborting -- us=10001ba8, pid=4948, uid=0 16:56:53 I/O read() chunk 1, pagenum 746735, pagecnt 8 16:56:53 INFORMIX-OnLine Must ABORT Root chunk down. 16:56:53 -- Online Aborting -- us=10002bd8, pid=3574, uid=5000 16:56:53 I/O read() chunk 1, pagenum 617559, pagecnt 8 16:56:53 INFORMIX-OnLine Must ABORT Root chunk down. 16:56:53 -- Online Aborting -- us=10002c48, pid=26455, uid=5000 INFORMIX-OnLine Must ABORT Root chunk down. 16:56:53 -- Online Aborting -- us=10002a18, pid=27495, uid=5000 16:56:55 I/O read() chunk 1, pagenum 2014, pagecnt 1 16:56:55 INFORMIX-OnLine Must ABORT Root chunk down. 16:56:55 -- Online Aborting -- us=10002238, pid=12311, uid=1163 16:57:02 INFORMIX-OnLine Stopped tbstat -a listing (taken much later after crash) ------------------------------------------------ RSAM Version 5.00.UC3 -- On-Line -- Up 16:06:20 -- 31832 Kbytes Message Log File: /usr/informix/online.log ted 09:28:22 Checkpoint Completed 09:37:22 Checkpoint Completed 09:46:36 Checkpoint Completed 09:55:59 Checkpoint Completed 10:07:37 Checkpoint Completed 10:17:50 Checkpoint Completed 10:29:04 Checkpoint Completed 10:37:40 Checkpoint Completed 10:43:30 Checkpoint Completed 10:52:11 Checkpoint Completed 11:11:58 Checkpoint Completed 11:19:57 Checkpoint Completed 11:34:18 Checkpoint Completed 11:52:45 Checkpoint Completed 12:22:48 Checkpoint Completed 12:53:13 Checkpoint Completed Configuration File: /usr/informix/etc/tbconfig.01 #************************************************************************** # # INFORMIX SOFTWARE, INC. # # Title: tbconfig.01 # Sccsid: @(#)tbconfig.02 7.2 11/20/90 11:06:55 # Description: INFORMIX-OnLine Configuration Parameters # #************************************************************************** # Root Dbspace Configuration ROOTNAME rootdbs # Root dbspace name ROOTPATH /dev/dbdisk1 # Path for device containing root dbspace ROOTOFFSET 50 # Offset of root dbspace into device (Kbytes) ROOTSIZE 20