Date: Tue, 2 Aug 2005 19:56:50 +0200 From: Wilko Bulte <wb@freebie.xs4all.nl> To: Kevin Oberman <oberman@es.net> Cc: Colin King <ring_06@m202.net>, Scot Hetzel <swhetzel@gmail.com>, Justin Finkelstein <justin@redwiredesign.com>, freebsd-current@freebsd.org Subject: Re: Hot-swap SATA and atacontrol Message-ID: <20050802175650.GB62825@freebie.xs4all.nl> In-Reply-To: <20050802174859.DAFF55D07@ptavv.es.net> References: <20050802160045.GA61854@freebie.xs4all.nl> <20050802174859.DAFF55D07@ptavv.es.net>
next in thread | previous in thread | raw e-mail | index | archive | help
On Tue, Aug 02, 2005 at 10:48:59AM -0700, Kevin Oberman wrote.. > > Date: Tue, 2 Aug 2005 18:00:45 +0200 > > From: Wilko Bulte <wb@freebie.xs4all.nl> > > Sender: owner-freebsd-current@freebsd.org > > > > On Tue, Aug 02, 2005 at 10:44:07AM -0500, Scot Hetzel wrote.. > > > On 8/2/05, Justin Finkelstein <justin@redwiredesign.com> wrote: > > > > I might be being a little dense, but what do you mean by sync? > > > > > > > before you unmount the drive, type: > > > > > > sync > > > sync > > > sync > > > > > > Then unmount the drive, and remove it. > > > > Unmount does not return until the buffers have been synced anyway, > > so this does not buy you anything. > > > > The ancient form is more like: > > > > sync;sync;sync;<halt button on your PDP/11 frontpanel> > > Not really. The PDP-11 (and early VAX) invocation was: > sync > sync > sync > <Hit halt switch> > > There was a real difference between that and sync;sync;sync. Either was > usually effective, but the delay to enter actual separate commands was Yes, I should have been more accurate here. > required for real safety. (Unix file systems were really pretty unstable > back then. fsck was the norm on many reboots, even if you THOUGHT that > they had been safely dismounted.) Yeah. No clean bit either. I had Ultrix-11 running on a 11/34 on dual RK05 once. Now that is fun.. :) -- Wilko Bulte wilko@FreeBSD.org
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20050802175650.GB62825>