Start the virtual machine sd 0:0:0:0: [sda] Assuming drive cache: write through error to solve my actual measurement!

1. Look at the error log first. According to the log error type "journalctl" to view system logs, enter journalctl on the command line to view the log

journalctl

2. Check the sda ​​that reported the error. My side is sda2, so execute the following command

xfs_repair -v -L /dev/sda2

3. Then restart the virtual machine, and you're done.