Re: raw device for voting disk RHEL5

On Wed, 14 Nov 2007 09:02:41 -0800, gerryt <lepsysinc_at_gmail.com> wrote:

>On Nov 14, 1:07 am, NetComrade <netcomradeNS..._at_bookexchange.net>
>wrote:
>> Posting to the oracle group, b/c all the googling points to only
>> Oracle folks using raw devices :)
>>
>> This is pretty much the problem, can't write to raw device.
>> BTW, this is RHEL5, and there is no more 'chkconfig restart
>> rawservice" or whatever it used to be. Need raw for Std Edition RAC
>> 10gr2.
>Or not - see below
>> [root_at_lsbcmdbp01 ~]# /bin/raw /dev/raw/raw10 /dev/sdi1
>> /dev/raw/raw10: bound to major 8, minor 129
>> [root_at_lsbcmdbp01 ~]# dd if=/dev/zero of=/dev/raw/raw10 bs=512 count=20
>> dd: opening `/dev/raw/raw10': Device or resource busy
>> [root_at_lsbcmdbp01 ~]# dd if=/dev/zero of=/dev/sdi1 bs=512 count=20
>> 20+0 records in
>> 20+0 records out
>> 10240 bytes (10 kB) copied, 0.00076 seconds, 13.5 MB/s
>> permissions (played with)
>> [root_at_lsbcmdbp01 ~]# ls -ltrh /dev/raw/raw10
>> crw-rw-rw- 1 root root 162, 10 Nov 14 03:31 /dev/raw/raw10
>> .......
>> We run Oracle 9iR2,10gR1/2 on RH4/RH3 and Solaris 10 (Sparc)
>
>Debateable. You DID read the docs about ownership of the slices in
>question right? On Solaris it is documented that the raw slices should
>be owned by
>oracle:oinstall so I assume that's the same for Lie-GN-ux. : >

You DO see that that i've been running all commands as root? I think we figured it out by binding raw to /dev/mapper/mpathX devices.

>FYI I saw no improvement over UFS cooked on Solaris 10 during several
>swingbench runs, but ASM definitely was better. Consider ASM usage
>instead??

We have'nt gotten to ASM yet, need voting and OCR disk, which need to be raw
http://download.oracle.com/docs/cd/B19306_01/license.102/b14199/options.htm#CJAHAGJE .......
We run Oracle 9iR2,10gR1/2 on RH4/RH3 and Solaris 10 (Sparc) remove NSPAM to email Received on Wed Nov 14 2007 - 13:58:07 CST