Hi,
I've run a safe recover on a table after I had to recreate the index file:
# myisamchk --tmpdir=/proxydb/mysql/tmp --safe-recover internet_usage - recovering (with keycache) MyISAM-table 'internet_usage' Data records: 290804216 Data records: 519541696 #
After that I ran a query on the table, but the data seems to be corrupted. I tried flushing the tables but still got bad data despite the checks below which show everything looks fine:
mysql> check table internet_usage; +---------------------------+-------+----------+----------+ | Table | Op | Msg_type | Msg_text | +---------------------------+-------+----------+----------+ | proxy_logs.internet_usage | check | status | OK | +---------------------------+-------+----------+----------+ 1 row in set (35 min 34.97 sec)
# myisamchk internet_usage Checking MyISAM file: internet_usage Data records: 519541696 Deleted blocks: 0 - check file-size - check record delete-chain - check key delete-chain - check index reference - check data record references index: 1
# myisamchk -dvv internet_usage
MyISAM file: internet_usage Record format: Fixed length Character set: latin1 (8) File-version: 1 Creation time: 2004-10-27 16:49:48 Recover time: 2005-01-16 7:14:48 Status: checked Data records: 519541696 Deleted blocks: 0 Datafile parts: 519541696 Deleted data: 0 Datafile pointer (bytes): 4 Keyfile pointer (bytes): 4 Datafile length: 16625334272 Keyfile length: 5006235648 Max datafile length: 137438953470 Max keyfile length: 4398046510079 Recordlength: 32
table description: Key Start Len Index Type Rec/key Root Bloc 1 2 4 multip. unsigned long 0 445844480
Field Start Length Nullpos Nullbit Type 1 1 1 2 2 4 3 6 4 4 10 4 5 14 4 6 18 2 1 2 7 20 4 1 4 8 24 4 1 8 9 28 1 10 29 1 11 30 1 12 31 2
# ls -l internet* -rw-rw---- 1 mysql mysql 16625334272 Jan 16 07:14 internet_usage.MYD -rw-rw---- 1 mysql mysql 5006235648 Jan 17 09:05 internet_usage.MYI -rw-rw---- 1 mysql mysql 8856 Jul 09 2004 internet_usage.frm
mysql> show create table internet_usage \g
| internet_usage | CREATE TABLE `internet_usage` ( `uid` int(10) unsigned NOT NULL default '0', `time` timestamp(14) NOT NULL, `ip` int(10) unsigned NOT NULL default '0', `urlid` int(10) unsigned NOT NULL default '0', `timetaken` smallint(5) unsigned default '0', `cs_size` int(10) unsigned default '0', `sc_size` int(10) unsigned default '0', `method_ID` tinyint(3) unsigned NOT NULL default '0', `action_ID` tinyint(3) unsigned NOT NULL default '0', `virus_ID` tinyint(3) unsigned NOT NULL default '0', `useragent_ID` smallint(5) unsigned NOT NULL default '0', KEY `uid` (`uid`) ) TYPE=MyISAM MAX_ROWS=4294967295 |
1 row in set (0.00 sec)
mysql>
Could anyone give me some advice on what else I can try to recover the data please?
Thanks,
JS.
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