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replication problem / myisamchk: error
Posted by: olli
Date: June 16, 2005 03:33AM

Hi,

we are running one Master Server with 4 Slaves (MySQL 4.1.12) with master/slave replikation.

after a short period of time (3-4 hours) our databases at the master will be messed up a little bit like this:

master:/var/lib/mysql # myisamchk dbl/gebuehr.MYI
Checking MyISAM file: db/gebuehr.MYI
Data records: 44954 Deleted blocks: 8
myisamchk: warning: 1 client is using or hasn't closed the table properly
- check file-size
- check record delete-chain
- check key delete-chain
- check index reference
- check data record references index: 1
- check data record references index: 2
- check data record references index: 3
- check data record references index: 4
- check data record references index: 5
- check data record references index: 6
- check data record references index: 7
- check record links
MyISAM-table 'db/gebuehr.MYI' is usable but should be fixed

at the same time all slaves get corrupted in the same table like this:

slave1:/var/lib/mysql # myisamchk db/gebuehr.MYI
Checking MyISAM file: db/gebuehr.MYI
Data records: 44954 Deleted blocks: 8
myisamchk: warning: 1 client is using or hasn't closed the table properly
- check file-size
myisamchk: error: Size of indexfile is: 2854912 Should be: 2991104
- check record delete-chain
- check key delete-chain
- check index reference
- check data record references index: 1
myisamchk: error: Found 44900 keys of 44954
- check record links
myisamchk: error: Keypointers and record positions doesn't match
MyISAM-table 'db/gebuehr.MYI' is corrupted
Fix it using switch "-r" or "-o"

if i run myisamchek with -r on the master, all master tables are ok again.
i can now reload the slaves and there will be everthing all right also, but i
have to to this a few times a day - this can´t be right :)

we didn´t have this problem only at one table - most of our tables are corrupt like this - some after a few hours - some after days.

could anybode help ?

cheers,
oliver

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