Re: Help: Create raw devices

Posted in 1999

Topics: Storage & Space Management, Platform-Specific Issues

David Williams — Wed, 3 Mar 1999 03:01:38 +0000 — source: Informix-list mailing list archive (1991-1998)

In article <7bhuh3$4l3$1@shell.accesscom.com>, Scott <yosemite@accesscom.com> writes >In article <7a0rtc$i7q$1@pthp35.telecom.pt>, >Nuno Brito <nuno_brito@hotmail.com> wrote: >>Hi, >> >>Does any one knows how can I create a raw device for a Informix 7.30 chunk, >>in RedHat 5.2 ? >> >>TIA > >Red Hat 5.2 does not support raw devices. (Maybe 6.0 will; I'm awaiting >the beta copy... if anybody knows for sure if 6.0 will or if the 2.2.X kernel >extension packages to 5.2 do, please drop me some email.) > Last I heard Linus (yes THE Linus) thinks raw I/O is evil and so it is not likely to appear soon. > >-- >Alan Denney yosemiteATaccesscom.com > >Not a spokesman for Yosemite Botanical Munitions Inc. or Access Compost Supply. > -- David Williams

↪ replying to David Williams

Anders Welen — Wed, 03 Mar 1999 14:40:34 +0100 — source: Informix-list mailing list archive (1991-1998)

> Last I heard Linus (yes THE Linus) thinks raw I/O is evil and so it is > not likely to appear soon. Hmm... Are you sure he said that!!! From the OS view is sure is "a hazard and evil". But modern RDMS uses their own handling of raw devices to increase their performance. It makes a big different between accessing a raw device and a regular filesystem. /Anders -- .~. Anders Welen, Mandator AB / V \\ Email: echo "anders.welen@no_spam.se" | /| |\\ sed 's/no_spam/mandator/' ^ ^ (In english: Replace "no_spam" with "mandator")