Re: raw devices redhat 7.1

"Marcin Jakubowski" <user_at_debian.pl> wrote in message news:slrnai8dve.1v8.user_at_rose.pil.pl...
> Hi all
>
> I have redhat 7.1 and oracle 8.1.7. I have tablespaces over 2 GB in few
> files on starndard linux ext filesystem. I woud like switch to
> rawdevices, and I have questions.
>
> 1. What patch for linux kernel I need, I use 2.4.18 linux kernel with
> some security and acl patches. What raw-io patch i need.

check if /usr/src/linux/drivers/char/raw.c exists for raw device support

>
> 2. How I should buidl this raw io
>
> /dev/raw/raw1 -> /dev/sdc1

• create your partitions
• create your special device files if necessary : example : mknod /dev/hda17 b 3 17
• for each raw device add the following to /etc/rc.local #-- rawdevice binding /usr/bin/raw /dev/raw/raw9 /dev/hda17

            #-- rawdevice ownership & access rights
            #   (oracle:dba) is our oracle account
            /bin/chmod 600 /dev/raw/raw9
            /bin/chown oracle /dev/raw/raw9

>
> and there is a limit for raw io size like in standard filesystems ?
>
> 3. How to make backup of raw-io datablocks ? using dd and
> off=/some/file ?

dd or RMAN !

>
> Marcin
Received on Thu Jul 04 2002 - 08:44:57 CDT