Re: O_DSYNC broken on MacOS X?

Robert Haas <robertmhaas@gmail.com>

From: Robert Haas <robertmhaas@gmail.com>

To: Peter Eisentraut <peter_e@gmx.net>

Cc: Bruce Momjian <bruce@momjian.us>, Tom Lane <tgl@sss.pgh.pa.us>, Greg Stark <gsstark@mit.edu>, "A.M." <agentm@themactionfaction.com>, PostgreSQL Hackers <pgsql-hackers@postgresql.org>

Date: 2010-10-27T01:06:56Z

Lists: pgsql-hackers

Attachments

wal-reliability-list.patch (application/octet-stream) patch

On Mon, Oct 25, 2010 at 12:51 PM, Peter Eisentraut <peter_e@gmx.net> wrote:
> On mån, 2010-10-25 at 09:33 -0400, Robert Haas wrote:
>> It seems we're still missing some relevant details, because hdparm
>> doesn't seem to work on SCSI devices.  Is sdparm the right utility in
>> that case?  Does anyone know what the correct incantations look like?
>
> Search the sdparm man page for "Writeback Cache".  It has detailed
> examples.

Here's a patch.  This adds a few more details about sdparm and makes
it clear that it applies to both FreeBSD and Linux.  But, perhaps more
significantly, it rearranges what is currently a fairly long paragraph
into a bulleted list, which I think is more readable.  Comments?

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company