我已经停止并再次启动我们的ec2实例，之前工作正常，但在该服务器无法正常启动之后。系统日志显示了很多错误：
Cannot get hvm parameter CONSOLE_EVTCHN (18): -22!
Cannot get hvm parameter CONSOLE_EVTCHN (18): -22!
systemd[1]: Failed to insert module 'autofs4'
OK Started Show Plymouth Boot Screen.
OK Reached target Paths.
OK Reached target Basic System.
dracut-initqueue[248]: Warning: dracut-initqueue timeout - starting timeout scripts
Buffer I/O error on device dm-2, logical block 10565616
Buffer I/O error on device dm-2, logical block 10565616
OK Found device /dev/mapper/ol-root.
Starting File System Check on /dev/mapper/ol-root...
Buffer I/O error on device dm-2, logical block 10565616
Buffer I/O error on device dm-2, logical block 10565616
OK Started File System Check on /dev/mapper/ol-root.
OK Started dracut initqueue hook.
Mounting /sysroot...
OK Reached target Remote File Systems (Pre).
OK Buffer I/O error on device dm-2, logical block 10565616
Reached target RBuffer I/O error on device dm-2, logical block 10565616
emote File Systems.
FAILED Failed to mount /sysroot.
See 'systemctl status sysroot.mount' for details.
DEPEND Dependency failed for Initrd Root File System.
DEPEND Dependency failed for Reload Configuration from the Real Root.
OK Stopped dracut pre-pivot and cleanup hook.
OK Stopped target Initrd Default Target.
OK Reached target Initrd File Systems.
OK Stopped dracut mount hook.
OK Stopped target Basic System.
OK Stopped target System Initialization.
Starting Emergency Shell...
Generating "/run/initramfs/rdsosreport.txt"
Buffer I/O error on device dm-2, logical block 10565616
Buffer I/O error on device dm-2, logical block 10565616
Buffer I/O error on device dm-2, logical block 10565616
Buffer I/O error on device dm-2, logical block 10565616
Entering emergency mode. Exit the shell to continue.
Type "journalctl" to view system logs.
You might want to save "/run/initramfs/rdsosreport.txt" to a USB stick or /boot
after mounting them and attach it to a bug report.
:/#
出了什么问题，我该如何修复？ AWS不支持kvm？