| From: | "Donald Fraser" <postgres(at)kiwi-fraser(dot)net> |
|---|---|
| To: | "[ADMIN]" <pgsql-admin(at)postgresql(dot)org> |
| Subject: | WAL segment question |
| Date: | 2007-08-03 23:00:52 |
| Message-ID: | 008601c7d622$244237a0$b464a8c0@demolish1 |
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| Lists: | pgsql-admin |
Our company has two sites, a master and a disaster recovery site.
I am trying to assess whether data has been lost during a fail-over, due to the asynchronous method of transporting WAL file data between sites (we use DRBD).
Disaster recovery node start-up log:
user= pid=9907 timestamp=[2007-08-01 17:09:51 BST] tid= LOG: record with zero length at 0/7C62F52C
user= pid=9907 timestamp=[2007-08-01 17:09:51 BST] tid= LOG: redo done at 0/7C62F4E8
My question is: given the above WAL segment information, can I use it to decide whether information was lost in the master database site, at the point of failure, without starting the database up?
Regards
Donald Fraser.
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