Online backup cause bootfailure,anyone know why?
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From: "=?utf-8?B?UmljaGFyZA==?=" on 5 Aug 2010 10:51 Thanks for your patience. I use XLogCtl->Insert.forcePageWrites for XLOG recycling flag. So after pg_start_backup, no more XLOG files will be recycled. And as I said above, I make a CHECKPOINT_IMMEDIATE checkpoint in pg_start_backup, instead CHECKPOINT_WAIT. That all I did to code. I wonder whether the XLOG is corrupted, because the first error is "unexpected pageaddr %X/%X in log file %u, segment %u, offset %u" .The error page addr contains a LSN 8K before it should do and I compare the two pages , they are almost the same except the last several bytes. So it should not be missing some XLOG, can be the XLOG file or buffer was corrupted. ------------------ Richard 2010-08-05 ------------------------------------------------------------- 发件人：Robert Haas 发送日期：2010-08-05 22:38:37 收件人：Richard 抄送：Andrew Dunstan; pgsql-hackers 主题：Re: Re: [HACKERS] Re: Re: [HACKERS] Online backup cause bootfailure,anyone know why? On Thu, Aug 5, 2010 at 10:20 AM, Richard <husttripper(a)vip.sina.com> wrote: > Oh sorry, I missed something. I turned off the XLOG archive in code after pg_start_backup so the pg_xlog directory contains all the xlog files. > And for performance purpose, I change the checkpoint type in pg_start_backup to CHECKPOINT_IMMEDIATE, does it matter? > The PG log I mentioned above is the running error log not the XLOG. Well, it's pretty clear that you're missing some WAL; otherwise, you wouldn't be getting an error that says "WAL ends before end time of backup dump". It's hard to speculate as to whether that's a configuration problem or a result of your custom modifications to the source code, since you haven't provided many details about either. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise Postgres Company -- Sent via pgsql-hackers mailing list (pgsql-hackers(a)postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
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