Re: directio and async io on redhat linux 3 and oracle 9i

Noons <wizofoz2k_at_yahoo.com.au> wrote in message news:<4281db5a$0$26857$5a62ac22_at_per-qv1-newsreader-01.iinet.net.au>...
>
> I'd give Metaclick support a call. Looks like something
> seriously wrong with the patch? The module that gets patched
> is skgfr.o, within $ORACLE_HOME/lib/libgeneric9.a. Once the
> patch is in, the module changes size. Use "ar" to check.
> This is in my system:
>
> *before the patch*
> $ ar -tv libgeneric9.a skgfr.o
> rw-r--r-- XXXX/XXXXX 31381 Oct 18 23:54 2004 skgfr.o
>
> *after the patch*
> $ ar -tv libgeneric9.a skgfr.o
> rw-r--r-- XXXXX/XXXXX 30929 May 8 17:52 2005 skgfr.o
>
>
> The ext3 f/s are mounted with the
> following options:
> defaults,noatime,data=writeback
> Dunno if it makes any diff to your prob,
> but there you go. HTH

Turns out to be a bug. Direct I/O doesn't work with RHEL3 LVM.

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=131981 and Oracle reference bug : 3712769

It's supposed to be fixed in kernel version 2.4.21-27.8.EL

cheers
/M Received on Thu May 12 2005 - 13:05:45 CDT