Real-Time Monitoring

Linux Filesystem
Monitoring

Disk Space Tracking, Inode Usage & Mount Point Health

Never get caught by a silent 'Disk Full' error again. Monitor every filesystem, mount point, and inode table on your Linux servers to ensure data can always be written.

Start Free Trial Book Demo

Overview

What is Linux Filesystem Monitoring?

Linux filesystem monitoring is the process of tracking the capacity, utilization, and health of mounted storage volumes. This goes beyond simple byte capacity to include monitoring logical volumes, specific mount points (like /var/log or /data), and the inode table—which tracks the number of individual files that can be created on the disk.

Why Linux Filesystem Monitoring Matters

A 100% full filesystem is a catastrophic failure for a Linux server. When a disk fills up, applications crash, databases corrupt, and operating systems lock up because they can no longer write temp files or logs. Furthermore, Linux filesystem monitoring helps prevent 'Inode Exhaustion', a sneaky scenario where a disk has plenty of free gigabytes, but has run out of index nodes due to millions of tiny files, preventing any new files from being created.

✓Prevent catastrophic application crashes due to full disks
✓Catch runaway log files before they consume all space
✓Monitor network shares (NFS) and external mounts
✓Prevent silent failures from inode exhaustion

Core Use Cases

Vital for managing log servers where /var/log can fill up quickly, database servers requiring ample free space for backups and temp tables, and application servers that generate millions of small session files (which drain inodes rapidly).

Features

Complete Filesystem Monitoring Capabilities

💾

Per-Mount Point Usage

Track byte capacity and percentage used for every individual mounted filesystem (e.g., /, /home, /mnt/data).

🔢

Inode Tracking

Monitor inode usage percentages to ensure your server doesn't lose the ability to create new files despite having free disk space.

📈

Growth Trend Analysis

Analyze historical usage data to predict exactly when a drive will run out of space, allowing for proactive upgrades.

🔔

Tiered Alerts

Set a warning alert at 80% capacity for planning, and a critical alert at 95% for immediate intervention.

FAQ

Frequently Asked Questions

An inode is a data structure on a Linux filesystem that stores information about a file or directory. Every file consumes one inode. If you run out of inodes, you cannot create new files, even if the disk is mostly empty.

Yes, our agent can track usage across network-mounted filesystems (NFS, CIFS) as long as they are actively mounted on the host OS.

By setting a strict alert on your /var/log mount point using BigBell, you'll be notified the moment usage spikes, giving you time to configure logrotate or clear old logs.

Master Your Filesystem Metrics Today

Start monitoring filesystem performance in minutes. Prevent downtime before it happens.