libvirt镜像目录无法读写

原创已于 2024-03-06 23:28:54 修改 · 577 阅读

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#linux #vim

于 2024-03-06 23:23:58 首次发布

文章讲述了在使用virt-install安装KVM时遇到的异常退出问题，主要原因是/lib/libvirt/images/目录下的img文件权限设置不正确。作者通过检查发现权限为root:root，应改为qemu:qemu，并提供了修改文件所有权和重启libvirtd服务的解决方案。

今天使用virt-install安装KVM时遭遇异常退出，经过检查发现/var/lib/libvirt/images/下生成的img为空，且img的所有者是 root:root，正确的应该是qemu:qemu

17:38:17 ERROR    internal error: process exited while connecting to monitor: qemu-kvm: -chardev socket,id=charmonitor,fd=43,server,nowait: warning: short-form boolean option 'server' deprecated
17:38:17 Please use server=on instead
17:38:17 qemu-kvm: -chardev socket,id=charmonitor,fd=43,server,nowait: warning: short-form boolean option 'nowait' deprecated
17:38:17 Please use wait=off instead
17:38:17 qemu-kvm: -no-hpet: warning: -no-hpet is deprecated, use '-machine hpet=off' instead
17:38:17 qemu-kvm: -chardev socket,id=charchannel0,fd=54,server,nowait: warning: short-form boolean option 'server' deprecated
17:38:17 Please use server=on instead
17:38:17 qemu-kvm: -chardev socket,id=charchannel0,fd=54,server,nowait: warning: short-form boolean option 'nowait' deprecated
17:38:17 Please use wait=off instead
17:38:17 2024-03-06T09:28:00.931133Z qemu-kvm: -blockdev {"node-name":"libvirt-5-format","read-only":false,"cache":{"direct":false,"no-flush":false},"driver":"qcow2","file":"libvirt-5-storage","backing":null}: Image is not in qcow2 format
17:38:17 Domain installation does not appear to have been successful.
17:38:17 If it was, you can restart your domain by running:
17:38:17   virsh --connect qemu:///system start nas_Prod2-preload-1
17:38:17 otherwise, please restart your installation.

经过检查，发现依旧是权限问题owner和group都是root,当然不对

# sudo getfacl -e /var/lib/libvirt/images/
getfacl: Removing leading '/' from absolute path names
# file: var/lib/libvirt/images/
# owner: root
# group: root
user::rwx
group::rwx
other::rwx

修改一下owner, group为qemu

# sudo setfacl -m u:qemu:rx /var/lib/libvirt/images/

修改后再查看一下，qemu:qemu已经正确了

# sudo getfacl -e /var/lib/libvirt/images/
getfacl: Removing leading '/' from absolute path names
# file: var/lib/libvirt/images/
# owner: root
# group: root
user::rwx
user:qemu:r-x #effective:r-x
group::rwx #effective:rwx
mask::rwx
other::rwx

然后重启服务libvirtd