pve6 升级到7, 除了原有的国内源，需要添加pve的更新源，编辑/etc/apt/sources.list
deb https://mirrors.ustc.edu.cn/proxmox/debian/pve/ buster pve-no-subscription 然后保证系统最新
apt update && apt dist-upgrade备份各个虚拟机和容器后，执行
pve6to7 --full一般会有warning，主要是有运行的虚拟机和cgroup兼容问题，新版本要用cgroup2
确保备份完毕后，即可将源换成debian11的
sed -i 's/buster\/updates/bullseye-security/g;s/buster/bullseye/g' /etc/apt/sources.list然后cat下检查，可以用清华，163等，根据自己的速度
deb https://mirrors.tuna.tsinghua.edu.cn/debian/ bullseye main contrib non-free
deb https://mirrors.tuna.tsinghua.edu.cn/debian/ bullseye-updates main contrib non-free
deb https://mirrors.tuna.tsinghua.edu.cn/debian/ bullseye-backports main contrib non-free
deb https://mirrors.tuna.tsinghua.edu.cn/debian-security bullseye-security main contrib non-free
deb https://mirrors.ustc.edu.cn/proxmox/debian/pve/ bullseye pve-no-subscription确认无误后执行，当中会出现一部分交互，需要yes确认或者默认直接回车
apt update && apt dist-upgradeLXC启动报错问题解决
通过以上命令，顺利将pve6升级到7，但是我有特权lxc容器，涉及到一些网卡和显卡的调用，升级后lxc容器无法启动
提示， 以下所有2004应改为实际容器ID
cgfsng_setup_limits_legacy: 2764 Bad address - Failed to set
"devices.deny" to "a" cgroup_tree_create: 808 Failed to setup legacy
device limits cgfsng_payload_create: 1171 Numerical result out of
range - Failed to create container cgroup lxc_spawn: 1644 Failed
creating cgroups
__lxc_start: 2073 Failed to spawn container "2004" TASK ERROR: startup for container '2004' failed
检索后解决
编辑相关的容器conf文件，添加相关内容后， 启动
由于我是用zerotier，所有还有最后额外的2行用于设置tun
vi /etc/pve/lxc/2004.conf
systemd.unified_cgroup_hierarchy=0
lxc.cgroup.devices.allow =
lxc.cgroup.devices.deny =
lxc.cgroup2.devices.allow: c 10:200 rwm
lxc.hook.autodev: sh -c "modprobe tun; cd ${LXC_ROOTFS_MOUNT}/dev; mkdir net; mknod net/tun c 10 200; chmod 0666 net/tun"
