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RE: Recovery after system shutdown



If we are sure that transaction logs are persisted by making the bdb flags DB_TXN_SYNC, then there will not be problem if hardware fails and restarts right?

 

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-----Original Message-----
From: Howard Chu [mailto:hyc@symas.com]
Sent: Wednesday, June 20, 2007 11:09 PM
To: John Drescher
Cc: arunachalamp@huawei.com; openldap-software@openldap.org
Subject: Re: Recovery after system shutdown

 

John Drescher wrote:

>> Hello,

>> 

>> When I started adding some entries to openldap server (2.3.36), suddenly my

>> system powered off,

>> 

>> When I started my sytem after rebooting, my slapd with BDB as backend , is

>> unable to recover , I am getting an error as below, Please say , what am I

>> doing wrong

>> 

>> 

> I am not sure if this is your problem but have you tried running the

> bdb utilities to recover from a corrupted database. I believe the

> command is db_recover. We have had to do this a few times in the past.

 

It's clear from his error log that such actions will be useless. His

transaction log is clearly missing a large amount of data. The BDB transaction

support can't help you if your hardware fails to preserve the transaction log data.

 

--

   -- Howard Chu

   Chief Architect, Symas Corp.  http://www.symas.com

   Director, Highland Sun        http://highlandsun.com/hyc/

   Chief Architect, OpenLDAP     http://www.openldap.org/project/