CentOS7和RHEL7在 /etc/fstab中不包含/dev/shm
作者：互联网
Linux OL7/RHEL7: PRVE-0421 : No entry exists in /etc/fstab for mounting /dev/shm (文档 ID 2065603.1)
CentOS7和RHEL7在 /etc/fstab中不包含/dev/shm ，可以手动加进去，或者忽略都可以。
In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |
| References |
APPLIES TO:
Oracle Database - Standard Edition - Version 12.1.0.2 and later
Oracle Database - Enterprise Edition - Version 12.2.0.1 to 12.2.0.1 [Release 12.2]
Generic Linux
SYMPTOMS
Installing Grid infrastructure 12.1.0.2 on OL 7.1,cluvfy pre crsinst stage fails checking /dev/shm on both nodes.
PRVE-0421 : No entry exists in /etc/fstab for mounting /dev/shm
PRVE-0421 : No entry exists in /etc/fstab for mounting /dev/shm
CHANGES
CAUSE
This is due to below bugs:
OL7 - BUG 21441387 - 12.2/MAIN/OL7.1: CVU REPORTS /DEV/SHM NOT MOUNTED WHEN IT IS MOUNTED
RHEL 7 - Bug 25907259 : RHEL7.2: CVU REPORTS /DEV/SHM NOT MOUNTED WHEN IT IS MOUNTED
SOLUTION
This issue is fixed in 12.2.0.2, request for one-off patch if necessary.
As a work-around in OL7:
In OL7, the /dev/shm is not mounted in /etc/fstab on a fresh system, it is done in:
[root@testc140 u02]# ll /usr/lib/dracut/modules.d/99base/init.sh
-rwxr-xr-x. 1 root root 11379 Mar 26 10:14
vi /usr/lib/dracut/modules.d/99base/init.sh and comment the below lines
62 if ! ismounted /dev/shm; then
63 mkdir -m 0755 /dev/shm
64 mount -t tmpfs -o mode=1777,nosuid,nodev,strictatime tmpfs /dev/shm >/dev/null
65 fi
so, this validation is not really valid for OL7.
标签：RHEL7,12.2,fstab,dev,etc,OL7,shm 来源： https://blog.51cto.com/lhrbest/2703487