From owner-freebsd-small Tue Apr 4 11:16:49 2000 Delivered-To: freebsd-small@freebsd.org Received: from mail3.mmcable.com (fe3.rdc-kc.rr.com [24.94.163.50]) by hub.freebsd.org (Postfix) with ESMTP id 321AC37B6AA for ; Tue, 4 Apr 2000 11:16:46 -0700 (PDT) (envelope-from jss@subatomix.com) Received: from vulcan ([24.27.131.184]) by mail3.mmcable.com with Microsoft SMTPSVC(5.5.1877.357.35); Tue, 4 Apr 2000 13:16:45 -0500 Message-ID: <001f01bf9e6a$3a0b3c00$2aa85c0a@vulcan> From: "Jeffrey S. Sharp" To: "freebsd-small" Subject: Mounting and Corruption Rehashed Date: Tue, 4 Apr 2000 14:16:05 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2919.6700 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6700 Sender: owner-freebsd-small@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Let's set the way-back knob to a few months ago. We were discussing the viability of doing the following: * Mounting flash read-only on / * Mounting small MFS filesystems on /var and /tmp * Temporarily remounting / read-write to make changes The problem was this little paragraph from `man mount`: > Switching a filesystem back and forth between asynchronous > and normal op­eration or between read/write and read/only > access using ``mount -u'' may gradually bring about severe > filesystem corruption. Someone spoke up and said that they had actually experienced this corruption. Please excuse me if the following is a dumb question: why even mount the flash _read-only_ in the first place? If /var and /tmp are on separate filesystems (MFS), what write operations are going to happen to the flash that mounting read-only would prevent? Thanks, as always, for any helpful information. =============================== Jeffrey S. Sharp (XorAxAx) jss@subatomix.com -----BEGIN GEEK CODE BLOCK----- Version 3.12 GCS/IT/MU d-@ s-:+ a21 C++(++++) UBL+(+++$)> P L+(+++$)> E+> W++ N+(++) o? K? w++$> !O M(-) !V PS+ PE Y PGP- t+ 5 X+ R(+) tv+ b+ DI++(+++) G++ e> h--- r+++ y+++ ------END GEEK CODE BLOCK------ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-small" in the body of the message