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Date: Wed, 24 May 2006 16:37:47 -0400
From: Kris Kennaway <kris@obsecurity.org>
To: Giorgos Keramidas <keramida@ceid.upatras.gr>
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Cc: current@freebsd.org, Kris Kennaway <kris@obsecurity.org>
Subject: Re: md /tmp and async mounts
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On Wed, May 24, 2006 at 11:36:45PM +0300, Giorgos Keramidas wrote:
> On 2006-05-23 15:41, Kris Kennaway <kris@obsecurity.org> wrote:
> > You are confusing mdconfig's -o async mode, used only for vnode
> > backing (not the case here anyway):
> >
> >              [no]async
> >                      For vnode backed devices: avoid IO_SYNC for increa=
sed
> >                      performance but at the risk of deadlocking the ent=
ire
> >                      kernel.
> >
> > with mount's -o async mode, used at the filesystem layer on any
> > device.  The latter does not have deadlocks.
>=20
> Hi Kris,
>=20
> so we can safely add async to `tmpmfs_flags' in /etc/defaults/rc.conf?

I think so.  Also whatever else uses mds (diskless booting, ...?)

> If that is so, do you want me to make the change, or do you want to do
> this?

I don't have a good idea of what needs to be changed to do all of the
above, so if you're familiar with the code you might as well do it.

Kris


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