On 8/26/16 4:17 PM, Andres Freund wrote:
On 2016-08-26 18:46:42 +0300, Yury Zhuravlev wrote:
Thanks all.
Now understand LSN strongly connected with WAL.
However how difficult put last system LSN instead 0?
It's not so important but will allow make use LSN more consistent.

Maybe explain why you're interested in page lsns, that'd perhaps allow
us to give more meaningful feedback.

Yeah, especially since you mentioned this being for backups. I suspect you *want* those WAL records marked with 0, because that tells you that you can't rely on WAL when you back that data up.
Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
Data in Trouble? Get it in Treble! http://BlueTreble.com
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