Date: Mon, 17 Oct 2005 23:32:52 +0200 From: Wilko Bulte <wb@freebie.xs4all.nl> To: Mike Jakubik <mikej@rogers.com> Cc: stable@freebsd.org, Will Saxon <WillS@housing.ufl.edu>, Ronald Klop <ronald-freebsd8@klop.yi.org> Subject: Re: Disk 100% busy Message-ID: <20051017213252.GA866@freebie.xs4all.nl> In-Reply-To: <1211.FgtQRFVGBkU=.1129584070.squirrel@172.16.0.1> References: <0E972CEE334BFE4291CD07E056C76ED807738007@bragi.housing.ufl.edu> <1211.FgtQRFVGBkU=.1129584070.squirrel@172.16.0.1>
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On Mon, Oct 17, 2005 at 05:21:10PM -0400, Mike Jakubik wrote..
> On Sun, October 16, 2005 1:53 pm, Will Saxon wrote:
>
> > I completely forgot that I had the partition mounted 'sync'. That might
> > explain things a bit, huh.
>
> Do NOT mount the partition async, you are asking for filesystem corruption.
async is the other extreme end of the spectrum from sync..
async All I/O to the file system should be done asynchronously.
This is a dangerous flag to set, and should not be used
unless you are prepared to recreate the file system
should your system crash.
noasync
Metadata I/O should be done synchronously, while data I/O
should be done asynchronously. This is the default.
sync All I/O to the file system should be done synchronously.
--
Wilko Bulte wilko@FreeBSD.org
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