libvirt错误总结

最新推荐文章于 2021-10-26 11:00:18 发布

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virsh start vm1368544020451:

error: Failed to start domain vm1368544020451

error: internal error process exited while connecting to monitor: kvm: -drive file=/dev/sp1368155439693/v1368544020461,if=none,id=drive-virtio-disk0,format=qcow2: could not open disk image /dev/sp1368155439693/v1368544020461: Invalid argument

镜像格式错误，用qemu-img info 检查镜像和xml配置文件中指定的type是否一致。

error: Failed to start domain vm0

error: internal error process exited while connecting to monitor: Could not access KVM kernel module: No such file or directory
failed to initialize KVM: No such file or directory
No accelerator found!

上面的提示信息就是因为QEMU在初始化阶段因为无法找到kvm内核模块。

sudo modprobe kvm #载入指定的模块

重启电脑，进入bios界面，设置advance选项里面的virtualization标签为Enabled

通过命令 lsmod | grep kvm #显示已载入的模块

虚拟机迁移：

# virsh migrate --live 1 qemu+tcp://192.168.0.121 --p2p --tunnelled --unsafe

error: operation failed: Failed to connect to remote libvirt URI qemu+tcp://192.168.0.121（在URI后面加上/system，‘system’相当于root用户的访问权限)

#virsh migrate --live 2 qemu+tcp://192.168.0.121/system --p2p --tunnelled

error: Unsafe migration: Migration may lead to data corruption if disks use cache != none（加上--unsafe参数）

#virsh migrate --live 2 qemu+tcp://192.168.0.121/system --p2p --tunnelled --unsafe

error: Timed out during operation: cannot acquire state change lock (启动虚拟机有时也会遇此错误）,需要重启libvirtd进程

virsh：

error: Failed to connect socket to '/var/run/libvirt/libvirt-sock': Connection refused(libvirtd 进程没有启动，libvirtd是一个监听客户端请求的进程）

$ virsh -c qemu:///system list
error: Failed to connect socket to '/var/run/libvirt/libvirt-sock': Permission denied
error: failed to connect to the hypervisor

（当前用户没有权限，修改/etc/libvirt/libvirtd.conf,unix_sock_rw_perms = 0777,使所有用户都有权限读写）