Date: Mon, 22 Jul 2002 19:57:52 +0200 From: Jens Rehsack <rehsack@liwing.de> To: "Brian T. Schellenberger" <bts@babbleon.org> Cc: Philip Hallstrom <philip@adhesivemedia.com>, freebsd-questions@FreeBSD.ORG Subject: Re: If a disk is mounted read only is it possible to corrupt it? Message-ID: <3D3C47A0.F285FB8F@liwing.de> References: <20020719132123.F60588-100000@cypress.adhesivemedia.com> <3D3BDD27.8152AA0B@liwing.de> <200207220916.48028.bts@babbleon.org>
next in thread | previous in thread | raw e-mail | index | archive | help
"Brian T. Schellenberger" wrote: > > On Monday 22 July 2002 06:23 am, Jens Rehsack wrote: > | Philip Hallstrom wrote: > | > Hi all - > | > This seems like an obvious answer, but I didn't see anything in > | > the man pages or the FQ so... > | > > | > If I mount *all* of my partitions as read only (ignoring the problems of > | > needing to write log files, etc. for now) and then cut the power to the > | > server, is there any chance of corrupting the disk? It seems that > | > FreeBSD wouldn't do it, but would the disk itself do it? > | > | That depends on the disk you're using. If you have problem with your > | power supply, you should better think 'bout an uninterruptable power > | supply. > > Unless there is a power surge or physical trauma, a disk most certainly should > not be capable of "self-corrupting" unless a write has been issued, and if > they are mounted r/o then FreeBSD will never issue a write. I meant really old disks (we have some "gaming" machines with such disks) which are not able to do an auto park, etc. Such a disk could loose control over it's r/w head and physically corrupts magnetic particles on the disk surface. That's what I meant - sorry for to black writing. > -- > Brian, the man from Babble-On . . . . bts@babbleon.org (personal) > http://www.babbleon.org > > http://www.eff.org http://www.programming-freedom.org -- L i W W W i Jens Rehsack L W W W L i W W W W i nnn gggg LiWing IT-Services L i W W W W i n n g g LLLL i W W i n n g g Friesenstraße 2 gggg 06112 Halle g g g Tel.: +49 - 3 45 - 5 17 05 91 ggg e-Mail: <rehsack@liwing.de> Fax: +49 - 3 45 - 5 17 05 92 http://www.liwing.de/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?3D3C47A0.F285FB8F>