Introduction:
In the world of Linux system administration, encountering issues with Logical Volume Management (LVM) is not uncommon. One such issue that can arise is the "LV Status NOT available" message after a reboot. This error indicates that the Logical Volume (LV) is not accessible, leading to potential data loss or system instability. In this article, we will explore the possible causes of this problem and provide solutions to resolve it effectively.
Understanding LV Status Not Available:
When the LV Status shows as "NOT available" after a reboot, it signifies that the Logical Volume is not active or accessible in the system. This could be due to various reasons such as the Volume Group (VG) not being activated, the LV not being mounted, or the LVM subsystem encountering errors during the boot process.
Troubleshooting Steps:
To troubleshoot and resolve the "LV Status NOT available" issue, follow these steps:
1. Check LVM Subsystem Detection:
Ensure that the LVM subsystem is detected and initialized correctly during the system boot. Look for any error messages related to LVM in the boot logs (/var/log/messages or /var/log/syslog) to identify any potential issues.
2. Verify VG Activation:
Check if the Volume Group containing the LV is activated. Use the 'vgchange' command to activate the VG manually if it is inactive. For example:
vgchange -ay
3. Mount the LV:
If the LV is not mounted automatically after activation, you can manually mount it using the 'mount' command. Make sure to specify the correct mount point and filesystem type. For example:
mount /dev/
4. Create a Startup Script:
To automate the activation and mounting of LVs during system boot, create a custom startup script in the /etc/init.d directory. This script should include commands to activate the VG and mount the LV. Remember to set the script to start automatically at boot time.
5. Redirecting to chkconfig:
If you encounter the message "lvmmount.service is not a native service, redirecting to /sbin/chkconfig," it indicates that the service is not recognized as a native systemd service. Use the 'chkconfig' command to manage the service's startup configuration. For example:
chkconfig lvmmount on
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