目前是由以下情况导致的：
1、同一个磁盘，被挂载到多个路径
比如autodl-202-2这个容器，/dev/sda是挂载到宿主机的/autodl2下，而/autodl2则被挂载到autodl-202-2容器的多个路径：/disk和/autodl-share-tmp
(base) mcj@SDAI202-PowerEdge-T630:~$ lxc config device show autodl-202-2 gpu: type: gpu sda: path: /dev/sda type: unix-block sharedisk: path: /disk source: /autodl2/lxd-autodl2 type: disk tmpdisk: path: /autodl-share-tmp source: /autodl2/autodl-share-tmp type: disk
这就会导致一个问题，就是project quota同时只会被其中一个路径启用，所以我们期望的/disk未能启用，而/autodl-share-tmp则启用了，可以通过下面这个命令来确认：
root@autodl-202-2:~# sudo quotaon /dev/sda quotaon: using . on /dev/sda [/autodl-share-tmp]: File exists
恢复方法也比较简单，在宿主机上先卸载/autodl-share-tmp再挂载即可：
lxc config device remove autodl-202-2 tmpdisk lxc config device add autodl-202-2 tmpdisk disk source=/autodl2/autodl-share-tmp path=/autodl-share-tmp
2、unix-block挂载的磁盘错误
这种情况比价少见，多见于服务器新增磁盘的情况。比如我们今天就是新增了一块磁盘，结果导致原本的/disk是/dev/sdc，结果变成了/dev/sdd，所以自然无法启用限额。
(base) mcj@SDAI202-PowerEdge-T630:~$ lxc config device show autodl-202-4 gpu: type: gpu sdc: path: /dev/sdc type: unix-block sharedisk: path: /disk source: /disk/lxd-autodl4 type: disk tmpdisk: path: /autodl-share-tmp source: /autodl2/autodl-share-tmp type: disk (base) mcj@SDAI202-PowerEdge-T630:~$ df -h Filesystem Size Used Avail Use% Mounted on tmpfs 26G 3.5M 26G 1% /run /dev/sdc2 187G 75G 103G 43% / tmpfs 126G 0 126G 0% /dev/shm tmpfs 5.0M 4.0K 5.0M 1% /run/lock efivarfs 304K 214K 85K 72% /sys/firmware/efi/efivars /dev/sdc3 691G 544G 112G 83% /home /dev/sdc1 487M 6.1M 480M 2% /boot/efi /dev/sdd 3.6T 3.2T 252G 93% /disk /dev/sde1 7.3T 5.9T 1006G 86% /disk1 /dev/sda 5.5T 942G 4.3T 18% /autodl2 tmpfs 1.0M 0 1.0M 0% /var/snap/lxd/common/ns tmpfs 26G 60K 26G 1% /run/user/1000 tmpfs 26G 64K 26G 1% /run/user/1017 tmpfs 26G 68K 26G 1% /run/user/1013 tmpfs 26G 64K 26G 1% /run/user/1010
这种情况恢复起来也很简单，只需要先卸载sdc，再挂载sdd即可。
(base) mcj@SDAI202-PowerEdge-T630:~$ lxc config device remove autodl-202-4 sdc Device sdc removed from autodl-202-4 (base) mcj@SDAI202-PowerEdge-T630:~$ lxc config device add autodl-202-4 sdd unix-block path=/dev/sdd Device sdd added to autodl-202-4 (base) mcj@SDAI202-PowerEdge-T630:~$ lxc exec autodl-202-4 -- quotaon -Ppv /disk project quota on /disk (/dev/sdd) is on (enforced) (base) mcj@SDAI202-PowerEdge-T630:~$