Thank you for answer. CENTOS 5.2 does not have "rawdevices" services and also NO "/etc/udev/permissions.d" file any more.
--- 08/7/17 (星期四)，Jeff jlar310@gmail.com 寫道：
寄件者: Jeff jlar310@gmail.com 主旨: Re: [CentOS] Raw device gone after reboot (Centos 5.2)!!! 收件者: "CentOS mailing list" centos@centos.org 日期: 2008 7 17 星期四 下午 5:45
2008/7/17 mcclnx mcc mcclnx@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 #