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Re: DOC: Wal update

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Zdenek Kotala <Zdenek(dot)Kotala(at)Sun(dot)COM>
Cc: PostgreSQL-patches <pgsql-patches(at)postgresql(dot)org>
Subject: Re: DOC: Wal update
Date: 2008-01-10 03:01:21
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Lists: pgsql-patches
Zdenek Kotala wrote:
> Bruce Momjian wrote:
> > Zdenek Kotala wrote:
> >> I add few sentences how to write cache works on Solaris platform.
> > 
> > I have updated our documentation with the attached patch.  I was able to
> > verify all the information in this change.  
> Thanks.
> > I changed your original wording because the statement that UFS turns off
> > write cache seemed unclear because the file system seems independent of
> > the disk write cache.  (What happens if you have UFS and ZFS on the same
> > drive?)
> You are right UFS does not modify (write) cache setting and it is usually 
> disabled by default on most disks. If ZFS and UFS are  on same disk, than ZFS 
> don't enable disk cache. It is a reason why put ZFS on separate disk is better. See
> > Anyway I think the attached wording is fine.
> Yes, it is.
> 		Zdenek
> PS: There are some articles about ZFS.
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  Bruce Momjian  <bruce(at)momjian(dot)us>

  + If your life is a hard drive, Christ can be your backup. +

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