Date: Fri, 2 Jun 2006 00:35:27 +0300 From: Giorgos Keramidas <keramida@ceid.upatras.gr> To: Kris Kennaway <kris@obsecurity.org> Cc: freebsd-current@freebsd.org Subject: Re: md /tmp and async mounts Message-ID: <20060601213527.GA53422@gothmog.pc> In-Reply-To: <20060601210655.GA36389@xor.obsecurity.org> References: <20060522211223.GA3621@xor.obsecurity.org> <20060522231437.GC1446@odin.ac.hmc.edu> <20060523133037.GA2908@gothmog.pc> <20060523143013.GA11472@ci0.org> <20060523194106.GA46634@xor.obsecurity.org> <20060524203645.GB13500@gothmog.pc> <20060524203747.GA88742@xor.obsecurity.org> <20060524204617.GA13701@gothmog.pc> <20060601002024.GA1453@gothmog.pc> <20060601210655.GA36389@xor.obsecurity.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On 2006-06-01 17:06, Kris Kennaway <kris@obsecurity.org> wrote: > On Thu, Jun 01, 2006 at 03:20:24AM +0300, Giorgos Keramidas wrote: > > [diff snipped] > > Thanks for the patch. > > > This doesn't make 'async' the default for all mdmfs mounts. > > > > Making async the default for mdmfs-based filesystems would > > require a fair bit of changes to mdmfs, which would have to grow > > mount-option parsing capabilities for the `optarg' of the -o > > option and make sure that async is always added, unless mdmfs is > > called explicitly with `noasync' in its -o option. > > > > Having said this, if this is considered a change we should make, > > I can prepare a patch for mdmfs too. > > I think it should be the default. I think we should also avoid using > -M (malloc backing for md) in favour of swap backing because of the > panic problems - this is too easy to trigger by accident and it makes > FreeBSD look bad since it looks like a bug. Ok, I'll prepare a patch that enables async and disables -M. We should also document the fact that tmpmfs="YES" and varmfs="YES" in rc.conf may require the presence of at least one swap device by default, and point the users to -M with a warning if they run FreeBSD without a swap device but still want to use tmpmfs or varmfs :)
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20060601213527.GA53422>