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Initialization question

Posted in 1999

Topics: Installation, Setup & Upgrades, Storage & Space Management, Server Administration, Versions, Editions & End-of-Life

ainars ainars — — source: Informix-list mailing list archive (1991-1998)

Hi! I'm trying to install IDS 7.21 on UNIX. I created file, named it 'ol_chunk' and concatenated it to /dev/null (don't know why... just follow the manual). And I set the ONCONFIG parameter ROOTPATH to this file. IS it enough? Will the oninit command create primary dbspace itself? Thanks a lot! _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com

↪ replying to ainars ainars
Jonathan Leffler — — source: Informix-list mailing list archive (1991-1998)

ainars ainars wrote: > I'm trying to install IDS 7.21 on UNIX. > > I created file, named it 'ol_chunk' and concatenated it > to /dev/null (don't know why... > just follow the manual). It's best to use an empty file, or one which has a known contents which will not confuse OnLine. If you created the file as an empty file, then the cat /dev/null >ol_chunk will have done nothing. > And I set the > ONCONFIG parameter ROOTPATH to this file. IS it enough? > Will the oninit command create primary dbspace itself? Yes; it will allocate and scribble on the space you specify. It's what I (usually) do when using cooked files. When I don't do that, I use: dd if=/dev/zero of=servername.rootdbs.c0 bs=1k count=20480 (a) That means I use a very systematic naming convention for chunk files: using the DBSERVER parameter, the dbspace name, and the chunk number (c0 -- m0 for it's mirror). (b) It pre-creates the file of the correct size. OnLine still scribbles on the file, so it isn't really buying me anything. (c) Don't forget to set the permissions to informix/informix/660. -- Jonathan Leffler (jleffler@informix.com, jleffler@earthlink.net) Guardian of DBD::Informix v0.60 -- see http://www.perl.com/CPAN #include <disclaimer.h>

↪ replying to Jonathan Leffler
Art S. Kagel — — source: Informix-list mailing list archive (1991-1998)

Jonathan Leffler wrote: [Other matters SNIPPED] > dd if=/dev/zero of=servername.rootdbs.c0 bs=1k count=20480 > > (a) That means I use a very systematic naming convention for chunk > files: using the DBSERVER parameter, the dbspace name, and the > chunk number (c0 -- m0 for it's mirror). Just an asside. If you have several servers which are sisters, ie same data but not replicants, and you include the dbserver name as part of the chunk link names you will have trouble if you one day have to restore sister_1 and find it's backup has been trashed so you have to use the archive from sister_2! Been there done that. Art S. Kagel

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