The nfsconf tool
CentOS/RHEL 8 introduces the nfsconf tool to manage the NFS client and server configuration files under NFSv4 and NFSv3. Configure the nfsconf tool using /etc/nfs.conf (the /etc/sysconfig/nfs file from earlier ve...
This post will help to configure Oracleasm disks using Udev rules in 2 node cluster.
On first node
1. List the disks:
[root@node01 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 2G 0 disk
sdb 8:16...
This post focuses on manually repairing the file-system configuration or corruption issues that stop the boot process.
Diagnosing and fixing file system issues
Errors in /etc/fstab and corrupt file systems can stop a system from boot...
TimeFinder SnapVX Overview
TimeFinder SnapVX provides a highly efficient mechanism for taking periodic point-in-time copies of source data without the need for target devices. Target devices are required only for presenting the point-...
This is a quick how-to post on checking the vendor of the installed rpms on a system. In some scenarios, a custom rpm package may not be compatible or supported on the specific system or environment. This post will help you identify th...
Question: How to find out how large a yum channel repository is, to know how much data the channel will sync to a local yum repository?
To see the actual size of the repository use either the ‘yum repolist -v‘ or ‘yum repoinfo‘ comman...
The default limit of maximum luns that can be presented in a CentOS/RHEL 6 is 512. But in many cases, you may want to increase this limit. There is a parameter of the SCSI core module to control the number of multiple LUNs.
View Curre...
From CentOS/RHEL 7, the default value of parameter max_report_luns has been increased from 512 to 16383. Consequently, CentOS/RHEL 7.x can now discover more than 511 LUNs when the system scans the SCSI interconnect using the Report LUN...
