2008/7/17 mcclnx mcc <mcclnx at yahoo.com.tw>: > We are set up CENTOS 5.2 (X86) as our database server. I created raw > partitions and also put definition on /etc/sysconfig/rawdevices. > > I can use "raw -qa" see raw partitions. The wield things is after reboot > /dev/raw is not exist any more. > > > > Does anyone know how to fix it? Raw partitions are deprecated. I recall from prior posts that you are using Informix, is that right? Recent versions of Informix implement the O_DIRECT flag for disk I/O so raw devices are not needed For our Informix installation, we point the server directly at the /dev/sd* devices. The one trick is to create a file in /etc/udev/permissions.d that sets the permissions for the disk devices at boot. # cat /etc/udev/permissions.d/40-informix.permissions sdb5:informix:informix:0660 sdb6:informix:informix:0660 sdb7:informix:informix:0660 # -- Jeff