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May 23, 2025
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Author: Rasool Cool

Mapping SAN LUN, Disk, LVM and FS in Linux
Bash Script / Linux / Linux Administration / Shell Script / shell-scripts

How to map LUN, Disk, LVM and FileSystem in Linux

July 9, 2023July 10, 2023 - by Rasool Cool - 1 Comment

There are situations where you want to map storage LUN (Logical Unit Number), Block Device, LVM (LV & VG names) and File System (FS) information for FS expansion or Disaster …

How to map LUN, Disk, LVM and FileSystem in Linux Read More
Changing default kernel in RHEL 8 and RHEL 9
Kernel / Red Hat / Red Hat Enterprise Linux / RHEL

How to Change the default kernel in RHEL 8 and 9

June 17, 2023June 17, 2023 - by Rasool Cool - Leave a Comment

Usually a Linux system boots with the latest installed kernel, which is set by default. It keeps maximum 3 recent versions of Linux Kernel boot entries. Let’s say you’ve done …

How to Change the default kernel in RHEL 8 and 9 Read More
Mapping SAN LUN to Physical Disk and FileSystem in Linux
Bash Script / Linux / Linux Administration / Linux Advanced Commands / Shell Script / shell-scripts

How to map SAN LUN, Disk and FileSystem in Linux

June 3, 2023June 3, 2023 - by Rasool Cool - Leave a Comment

For some requirements, you may need to find a block device mapped against a logical unit number (LUNs) and filesystem (FS) for FS expansion or disaster recovery (DR) activity. Similar …

How to map SAN LUN, Disk and FileSystem in Linux Read More
How to Resize an Online Multipath Device on Linux
Linux / Linux Administration / Linux Advanced Commands / Linux Commands

How to Resize an Online Multipath Device on Linux

September 25, 2022April 23, 2023 - by Rasool Cool - 2 Comments.

Disk space on Linux can be expanded by adding a new LUN or resizing an existing LUN on the system. In most cases, the online resizing of the multipath device …

How to Resize an Online Multipath Device on Linux Read More

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