[rhn-users] Re: Informix on Linux

[Larry D Sorensen]

Fred,

I looked in the rawdevices file and it appeared that the setup is of the
/dev/raw/raw1 /dev/sdb2 format. Once I make an entry in the file, like
above, do I link to the /dev/sdb2 or to the /dev/raw/raw1? Also, is that
all the I need to do is edit the rawdevices file or do I need to do
something else in conjunction?

Larry

On Mon, 27 Mar 2006 09:15:01 +0200 "Hornain Frederic"
<Frederic.Hornain at GB.BE> writes:
I am going to run into problems down the road, not having edited the
/etc/sysconfig/rawdevices file?
Well, I do not think so however I would recommend you to use raw device
instead of this method.
Obviously it does the same cause in the both case the chunks is managed
by informix and not the OS.

Nonetheless the problem is situated at the kernel level cause with raw
devices you specify specificly to the system these device are managed by
the DB and nothing else whereas in the other case it does not know.

To conclude, use raw device even if the behaviour is the same.

Feel free to contact me if you need more information about that. 

Best Regards
Fred
Belgium Fedora Ambassador
-----Original Message-----
From: rhn-users-bounces at redhat.com
[mailto:rhn-users-bounces at redhat.com]On Behalf Of Larry D Sorensen
Sent: Sunday, March 26, 2006 7:24 PM
To: rhn-users at redhat.com
Subject: [rhn-users] Re: Informix on Linux


Fred,

Thank you for the response. I am running RedHat ES 4. I wasn't able to
get any help before your message, so I experimented. I ran fdisk and
created some partitions. Then I created a static link to each of the
created partitions. Then I just created chunks in Informix using the
links. It has appeared to work so far. Do you think I am going to run
into problems down the road, not having edited the
/etc/sysconfig/rawdevices file?


On Sun, 26 Mar 2006 03:53:54 +0200 "Hornain Frederic"
<Frederic.Hornain at GB.BE> writes:
Hi,

>Does anyone run Informix using raw partitions on Linux?
Yes , I have already done that. You have just to create logical or
physical hard disks dedicated to Informix. 
For instance "/dev/hdc"
Then open the raws configuration file situated on
/etc/sysconfig/rawdevices I think. BTW, I beleive that on one previous
fedora version, the raw device tricks was not fonctionning very well.
Fedora 1 or 2 ? Do not remember. 
Well...
Then add a line corresponding to you device either via the device number
"major and minor" or via the path I beleive.
Finally restart the service associated to the raw device, if I remember
well....
Then you should see you raw device running raw -qa I think.

BTW, do not forget to point your chunks on links pointing on specific raw
devices.

Is there a limit on the number that can be created, or is it fairly high?
On previous version, I think it was 255.
But now on RHEL4, I think it is more.

Feel free to contact me if you nees more information about that. 
Sorry but it's quite late here, and I am a little bit tired. 

Best Regards
Fred
Belgium Fedora Ambassador



-----Original Message-----
From: rhn-users-bounces at redhat.com
[mailto:rhn-users-bounces at redhat.com]On Behalf Of larry.sorensen at juno.com
Sent: Saturday, March 25, 2006 12:12 AM
To: rhn-users at redhat.com
Subject: [rhn-users] Re: Informix on Linux


Does anyone run Informix using raw partitions on Linux? I need to create
some raw partitions and need to know the Linux commands for creating them
for use with Informix. Is there a limit on the number that can be
created, or is it fairly high?
Thanks.
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