From owner-freebsd-questions Sat May 23 21:14:14 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id VAA02856 for freebsd-questions-outgoing; Sat, 23 May 1998 21:14:14 -0700 (PDT) (envelope-from owner-freebsd-questions@FreeBSD.ORG) Received: from freebie.lemis.com (freebie.lemis.com [139.130.136.133]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id VAA02770 for ; Sat, 23 May 1998 21:13:58 -0700 (PDT) (envelope-from grog@lemis.com) Received: (from grog@localhost) by freebie.lemis.com (8.8.8/8.8.7) id NAA01241; Sun, 24 May 1998 13:43:56 +0930 (CST) (envelope-from grog) Message-ID: <19980524134356.G353@freebie.lemis.com> Date: Sun, 24 May 1998 13:43:56 +0930 From: Greg Lehey To: drifter@stratos.net, freebsd-questions@FreeBSD.ORG Subject: Re: Waiting for devices to complete operations References: <19980523232430.A22200@stratos.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.91.1i In-Reply-To: <19980523232430.A22200@stratos.net>; from drifter@stratos.net on Sat, May 23, 1998 at 11:24:30PM -0400 WWW-Home-Page: http://www.lemis.com/~grog Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-41-739-7062 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sat, 23 May 1998 at 23:24:30 -0400, drifter@stratos.net wrote: > While dialing out to my ISP one night, I noticed that the > company's phones were done. That's not the important part. The issue > here is that I am noticing that whenever certain operations on devices, > such as ppp waiting on a connection, or a process waiting for a disk > operation to complete, it cannot be terminated or killed if you > have given up on it. Neither a ^C/^\, nor kill -TERM/-KILL from another > command line. > Unfortunately, other than the ppp example, I don't remember > off hand a specific example involving waiting for a disk operation, but > that has happened to me to. (A ps reveals a D flag on STAT). > I guess I am wondering if such an annoying trait is someone > predestined due to hardware constraints, or if it is more of a > software design issue. What if an "uninteruptable operation" has > failed, and you need to kill it? > And, if it is a software design issue issue, how come it hasn't > been "fixed"? Is such an change actually much harder than it appears? What wait string do you get from ps -l? Greg -- See complete headers for address and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message