If you are experiencing problems with KVM (Kernel-based Virtual Machine) virtualization on a Linux system and you want to use log files to troubleshoot the issue, there are several logs that you may want to review. These logs may be located in different directories, depending on your operating system and configuration. Some common log files to check include:
/var/log/libvirt/qemu/<vm_name>.log: This log file contains information about the virtual machines running on the system, including any errors or warnings that may have occurred. The <vm_name> in the file path is the name of the virtual machine.
/var/log/messages: This log file contains general system messages, including information about KVM-related events such as virtual machine startup and shutdown.
/var/log/dmesg: This log file contains the kernel ring buffer, which contains information about kernel events such as device driver initialization and system boot.
/var/log/syslog: This log file contains system messages and events, including information about KVM-related events such as virtual machine startup and shutdown.
To review these log files, you can use a command-line tool such as less or cat, or you can use a graphical text editor such as gedit or kate. You can also use the grep command to search for specific keywords or patterns in the log files.
If you are still unable to resolve the problem after reviewing the log files, it may be helpful to seek assistance from a qualified system administrator or to review the KVM documentation for additional troubleshooting steps.