| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | pgsql-hackers(at)postgresql(dot)org, "Simon Riggs" <simon(at)2ndquadrant(dot)com> |
| Cc: | pgsql-patches(at)postgresql(dot)org |
| Subject: | Re: wal_checksum = on (default) | off |
| Date: | 2007-01-04 15:00:56 |
| Message-ID: | 16797.1167922856@sss.pgh.pa.us |
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| Lists: | pgsql-hackers pgsql-patches |
"Simon Riggs" <simon(at)2ndquadrant(dot)com> writes:
> In this thread, I outlined an idea for reducing cost of WAL CRC checking
> http://archives.postgresql.org/pgsql-hackers/2006-10/msg01299.php
> wal_checksum = on (default) | off
This still seems awfully dangerous to me.
> Recovery can occur with/without same setting of wal_checksum, to avoid
> complications from crashes immediately after turning GUC on.
Surely not. Otherwise even the "on" setting is not really a defense.
regards, tom lane
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