Re: Proposed WAL changes - Mailing list pgsql-hackers

From Ian Lance Taylor
Subject Re: Proposed WAL changes
Date
Msg-id sihf155vki.fsf@daffy.airs.com
Whole thread Raw
In response to Re: Proposed WAL changes  ("Vadim Mikheev" <vmikheev@sectorbase.com>)
List pgsql-hackers
"Vadim Mikheev" <vmikheev@sectorbase.com> writes:

> I feel that the fact that
> 
> WAL can't help in the event of disk errors
> 
> is often overlooked.

This is true in general.  But, nevertheless, WAL can be written to
protect against predictable disk errors, when possible.  Failing to
write a couple of disk blocks when the system crashes is a reasonably
predictable disk error.  WAL should ideally be written to work
correctly in that situation.

Ian

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