btrfs subvolume create songchengyuan-3ogg33
查看子卷
btrfs subvolume list /vol1
设置配额
btrfs qgroup limit 200G /vol1/NFSshare/mount/songchengyuan-3ogg33
查看配额：
(base) root@VPMS-Lab-NAS:/vol1/NFSshare/mount/mashibo-0beuwp# btrfs subvolume show /vol1/NFSshare/mount/songchengyuan-3ogg33 NFSshare/mount/mashibo-0beuwp Name: mashibo-0beuwp UUID: cbc128ea-d373-4647-b313-1f40ae28ecdf Parent UUID: - Received UUID: - Creation time: 2025-12-25 11:51:57 +0800 Subvolume ID: 259 Generation: 135507 Gen at creation: 135492 Parent ID: 5 Top level ID: 5 Flags: - Send transid: 0 Send time: 2025-12-25 11:51:57 +0800 Receive transid: 0 Receive time: - Snapshot(s): Quota group: 0/259 Limit referenced: 300.00GiB Limit exclusive: - Usage referenced: 16.00KiB Usage exclusive: 16.00KiB
修改配额：