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diff --git a/health/guides/btrfs/btrfs_device_read_errors.md b/health/guides/btrfs/btrfs_device_read_errors.md deleted file mode 100644 index 684cd0be5..000000000 --- a/health/guides/btrfs/btrfs_device_read_errors.md +++ /dev/null @@ -1,50 +0,0 @@ -### Understand the alert - -This alert monitors the number of BTRFS read errors on a device. If you receive this alert, it means that your system has encountered at least one BTRFS read error in the last 10 minutes. - -### What are BTRFS read errors? - -BTRFS (B-Tree File System) is a modern file system designed for Linux. BTRFS read errors are instances where the file system fails to read data from a device. This can occur due to various reasons like hardware failure, file system corruption, or disk problems. - -### Troubleshoot the alert - -1. Check system logs for BTRFS errors - - Review the output from the following command to identify any BTRFS errors: - ``` - sudo journalctl -k | grep -i BTRFS - ``` - -2. Identify the affected BTRFS device and partition - - List all BTRFS devices with their respective information by running the following command: - ``` - sudo btrfs filesystem show - ``` - -3. Perform a BTRFS filesystem check - - To check the integrity of the BTRFS file system, run the following command, replacing `<device>` with the affected device path: - ``` - sudo btrfs check --readonly <device> - ``` - Note: Be careful when using the `--repair` option, as it may cause data loss. It is recommended to take a backup before attempting a repair. - -4. Verify the disk health - - Check the disk health using SMART tools to determine if there are any hardware issues. This can be done by first installing `smartmontools` if not already installed: - ``` - sudo apt install smartmontools - ``` - Then running a disk health check on the affected device: - ``` - sudo smartctl -a <device> - ``` - -5. Analyze the read error patterns - - If the read errors are happening consistently or increasing, consider replacing the affected device with a new one or adding redundancy to the system by using RAID or BTRFS built-in features. - -### Useful resources - -1. [smartmontools documentation](https://www.smartmontools.org/) |