This is one of the least used and known commands in Linux and can be very useful for Administrators when building or configuring monitoring of disk space and directory usage. The fallocate command is used for the pre-allocation of blocks to a File. lease refer to these related guides: How to fix CPU at 100% when nothing is running problem on Windows, and what are the advantage of using a 3rd party software for Backup (N2WS by Veeam) over AMI,
A team of Administrators are on a task to monitor specific directories in multiple servers. How do we test that? Fallocate command helps do this by allocating blocks requiring no I/O to the data blocks. In this article, you will learn “What the Fallocate command does”.
Also, see how to monitor Windows hosts via Nagios, how to Hide or Remove the Search Button from Windows 10 Taskbar, and how to prevent your computers from sending Diagnostics & feedback off via Windows Settings and Group Policy.
Linux Fallocate Command
NOTE: This command is supported on BTRFS, EXT4, OCTFS2, and XFS filesystems
fallocate --help
Shows the basic usage and command syntax.
To use this command lets check our current disk usage
df -hT
Test by creating a 20GB file
fallocate -l 20G testfile1
view the file size and disk usage
The Fallocate command is similar to the dd command, however, dd exists mostly for older versions of Linux. Top 10 communication software for Mac 2021.
I hope you found this blog post helpful on what the Fallocate command does? Please let me know in the comment section if you have any questions.
