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- Path: sparky!uunet!paladin.american.edu!gatech!emory!emory!not-for-mail
- From: dave.snyder@snide.com (Dave Snyder)
- Newsgroups: comp.databases.informix
- Subject: Re: Slicing up big disk section
- Date: 10 Jan 1993 22:58:05 -0500
- Organization: Mailing List Gateway
- Lines: 51
- Sender: walt@mathcs.emory.edu
- Distribution: world
- Message-ID: <1iqr8dINNb1q@emory.mathcs.emory.edu>
- Reply-To: dave.snyder@snide.com (Dave Snyder)
- NNTP-Posting-Host: emory.mathcs.emory.edu
- X-Informix-List-ID: <list.1767>
-
- Quoting Helen C Payne...
- }
- } We have a HP827 running HP/UX 8.02, using Informix Online 4.0 and
- } several 1.3Gb disks, with a default section 5 of approx 900Mb.
- }
- } A particular application would like to live on a 200Mb partition.
- }
- } Informix will allow me to configure database chunks specifying a
- } raw disk device and an offset, so there shouldn't be a problem
- } there. (X-posting to comp.databases.informix in case someone
- } knows otherwise)
- }
- } I would like to configure a unix file system of roughly 200Mb
- } on the first part of section 5, and a couple informix database
- } chunks on the last part.
- }
- } I have tested this (in part) by using mkfs to make a "short" system
- } at the start of section 5. 'df' reported a file system of the
- } desired size.
- }
- I'm not all that familar with HP systems, but if the hard disks are set
- up similar to most other systems, I can give a simple suggestion. Why
- not make section 5 700Mb in size and create another section of 200Mb
- for informix? Doing it that way, you won't have to worry about filesystem
- offsets. This is how my harddisk is set up:
-
- +---------------+---------------+--------+---+-------------+------------+
- | Name | Type | New FS | # | First Block | Last Block |
- +---------------+---------------+--------+---+-------------+------------+
- | root | EAFS | yes | 0 | 0| 147604|
- | swap | NON FS | no | 1 | 180373| 196372|
- | ootdbs | NON FS | no | 2 | 147605| 180372|
- | | NOT USED | no | 3 | -| -|
- | | NOT USED | no | 4 | -| -|
- | | NOT USED | no | 5 | -| -|
- | recover | NON FS | no | 6 | 196373| 196382|
- | hd0a | WHOLE DISK | no | 7 | 0| 196991|
- +---------------+---------------+--------+---+-------------+------------+
-
- Because of the size of the harddisk, I have only a root filesystem. But
- what I also have is a section specifically set aside for Informix-ONLINE.
- The "ootdbs" is 32Mb in size and I don't have to do any offsetting because
- it is on a different slice of the harddisk than the root filesystem. BTW,
- the reason the slice is called "ootdbs" is because block devices have an
- 'r' prepended to reference the corresponding character device, ie. "rootdbs".
-
- DAS
- --
- David Snyder @ Snide Computer Services - Folcroft, PA Current Release
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