Re: _cl5CompactDBs: failed to compact

Noriko Hosoi <nhosoi@xxxxxxxxxx> · Thu, 18 Jun 2015 10:58:09 -0700



    Hi Andrey,

      
      On 06/18/2015 01:23 AM, Ivanov Andrey (M.) wrote:

    
        Hi,

        
        we are using the branch 1.3.2 on CentOS7 in our production
          environment (version 1.3.2.27 with some additional patches
          from the git of this branch).

        
        There are three MMR replicating servers. It's one month of
          uptime and the servers wanted to trim the replication log.
          Here is what i've found in error log on each of them :

        
        1st server:

        
        [18/Jun/2015:08:04:31 +0200] - libdb: BDB2055 Lock table is
          out of available lock entries

        
    May not matter, but could you please try increasing the value of
    this db config parameter?  The default value is 10000.

    dn: cn=config,cn=ldbm database,cn=plugins,cn=config

      nsslapd-db-locks: 10000

    
        [18/Jun/2015:08:04:31 +0200] NSMMReplicationPlugin -
          changelog program - _cl5CompactDBs: failed to compact
          a45fa684-f28d11e4-af27aa63-5121b7ef; db error - 12 Cannot
          allocate memory
      
    
    I don't thing there is any problem even if the DBs are not
    compacted.  It was introduced just to release the free pages in the
    db files.  But I'd also like to learn why the compact fails with
    ENOMEM here.

    
    Thanks,

    --noriko

    
        2nd server:
        [18/Jun/2015:08:10:34 +0200] - libdb: BDB2055 Lock table is
          out of available lock entries

          [18/Jun/2015:08:10:34 +0200] NSMMReplicationPlugin - changelog
          program - _cl5CompactDBs: failed to compact
          acb7e184-f28d11e4-9b13d240-c66923c8; db error - 12 Cannot
          allocate memory
        

        3rd server:

        
        [18/Jun/2015:08:18:10 +0200] - libdb: BDB2055 Lock table is
          out of available lock entries

          [18/Jun/2015:08:18:10 +0200] NSMMReplicationPlugin - changelog
          program - _cl5CompactDBs: failed to compact
          acb7e184-f28d11e4-8067eff8-b1ca763b; db error - 12 Cannot
          allocate memory
        

        The changelog itself is not huge :

        
        [root@ldap-ens]# ll -h
          /Local/dirsrv/var/lib/dirsrv/slapd-ens/changelogdb/

          total 390M

          -rw------- 1 ldap ldap 390M Jun 18 10:18
          a45fa684-f28d11e4-af27aa63-5121b7ef_5547be40000000010000.db

          -rw-r--r-- 1 ldap ldap    0 May 19 08:02
          a45fa684-f28d11e4-af27aa63-5121b7ef.sema

          -rw------- 1 ldap ldap   30 May  4 20:45 DBVERSION
        

        The server are working correctky, the replication is also
          working

        
        What are the potential consequences of this error? How can
          we avoid it?

        
        Thank you!

        
      --
389 users mailing list
389-users@xxxxxxxxxxxxxxxxxxxxxxx
https://admin.fedoraproject.org/mailman/listinfo/389-users
    
    
--
389 users mailing list
389-users@xxxxxxxxxxxxxxxxxxxxxxx
https://admin.fedoraproject.org/mailman/listinfo/389-users