Hot-swap SATA and atacontrol

Colin King ring_06 at m202.net
Tue Aug 2 16:44:40 GMT 2005


You're absolutely right about it not being necessary to sync before you
unmount, but what I meant was that my experience with IDE hot swapping has
been pretty risky when it comes to crashing your entire system as soon as you
pull a drive. You'll want to sync for the sake of the other drives in your
system so that if your system does crash, those drives will be in a clean(er)
state.

On Tue, Aug 02, 2005 at 05:03:30PM +0100, Justin Finkelstein wrote:
> That's what I thought; I've never sync'ed stuff before unmounting it before,
> and chats with other BSD bods in my area say that just unmounting will do -
> and I think I'll stick to that.
> 
> -----Original Message-----
> From: Wilko Bulte [mailto:wb at freebie.xs4all.nl] 
> Sent: 02 August 2005 17:01
> To: Scot Hetzel
> Cc: Justin Finkelstein; Colin King; freebsd-current at freebsd.org
> Subject: Re: Hot-swap SATA and atacontrol
> 
> 
> On Tue, Aug 02, 2005 at 10:44:07AM -0500, Scot Hetzel wrote..
> > On 8/2/05, Justin Finkelstein <justin at 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>
> 
> -- 
> Wilko Bulte				wilko at FreeBSD.org
> 
> 

-- 
Colin King
http://www.m202.net/

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