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Re: We really ought to do something about O_DIRECT and data=journalled on ext4 - Mailing list pgsql-hackers

From Andres Freund
Subject Re: We really ought to do something about O_DIRECT and data=journalled on ext4
Date
Msg-id 201012011941.46965.andres@anarazel.de
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In response to Re: We really ought to do something about O_DIRECT and data=journalled on ext4  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: We really ought to do something about O_DIRECT and data=journalled on ext4  (Andrew Dunstan <andrew@dunslane.net>)
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On Wednesday 01 December 2010 19:09:05 Tom Lane wrote:
> Josh Berkus <josh@agliodbs.com> writes:
> > It's a bug and it's our bug.
> 
> No, it's a filesystem bug that this particular filesystem doesn't
> support a perfectly reasonable combination of options, and doesn't
> even fail gracefully as it could easily do.  But assigning blame
> doesn't help much.
I wouldnt call it a reasonable combination - promising fs-level data-
journaling (data=journal) and O_DIRECT are not really compatible with each 
other...

Andres

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