根据我的计算，btrfs通过总计 中的 Exclusive 组件，我的总大小应该为 153 GB btrfs qgroup show，但使用其他磁盘使用命令实际显示为 700 GB 左右。谁能给我一些关于如何识别各种子卷和快照的实际磁盘空间使用情况的指导？
btrfs qgroup show --raw /
Qgroupid Referenced Exclusive Path
-------- ---------- --------- ----
0/5 16384 16384 <toplevel>
0/256 43656376320 24752128 @
0/257 199570546688 58773504 @home
0/258 141635584 139149312 @log
0/259 19789303808 19789303808 @pkg
0/260 65536 65536 @.snapshots
0/261 16384 16384 @/var/lib/portables
0/262 16384 16384 @/var/lib/machines
0/263 16384 16384 @/config
0/264 16384 16384 @/config/.snapshots
0/524 16384 16384 @/config/.snapshots/260/snapshot
0/531 16384 16384 @/config/.snapshots/267/snapshot
0/543 16384 16384 @/config/.snapshots/279/snapshot
0/553 16384 16384 @/config/.snapshots/289/snapshot
0/554 16384 16384 @/config/.snapshots/290/snapshot
0/555 16384 16384 @/config/.snapshots/291/snapshot
0/556 16384 16384 @/config/.snapshots/292/snapshot
0/557 16384 16384 @/config/.snapshots/293/snapshot
0/558 16384 16384 @/.snapshots
0/559 16384 16384 @/config/.snapshots/294/snapshot
0/561 16384 16384 @/config/.snapshots/295/snapshot
0/563 16384 16384 @/config/.snapshots/296/snapshot
0/565 16384 16384 @/config/.snapshots/297/snapshot
0/568 77824 77824 @home/.snapshots
0/570 16384 16384 @/config/.snapshots/298/snapshot
0/571 394465181696 94642176 @home/.snapshots/1/snapshot
0/577 394902482944 522248192 @home/.snapshots/2/snapshot
0/597 44380700672 28607815680 @.snapshots/1/snapshot
0/1198 403471388672 7393017856 @home/.snapshots/313/snapshot
0/1199 43513024512 16787304448 @.snapshots/302/snapshot
0/2016 420993523712 9901699072 @home/.snapshots/722/snapshot
0/2017 41414443008 4527894528 @.snapshots/711/snapshot
0/2750 448229560320 12392017920 @home/.snapshots/1089/snapshot
0/2751 33841131520 6639910912 @.snapshots/1078/snapshot
0/3180 17179885568 17179885568 @/@swap
0/3697 257331318784 11361894400 @home/.snapshots/1547/snapshot
0/3698 42040500224 1002987520 @.snapshots/1536/snapshot
0/4121 197541814272 2328797184 @home/.snapshots/1746/snapshot
0/4122 42637578240 832200704 @.snapshots/1735/snapshot
0/4141 197536718848 1549631488 @home/.snapshots/1755/snapshot
0/4142 43396767744 44879872 @.snapshots/1744/snapshot
0/4181 197592567808 1761644544 @home/.snapshots/1773/snapshot
0/4182 43398729728 35799040 @.snapshots/1762/snapshot
0/4209 197790572544 1257037824 @home/.snapshots/1786/snapshot
0/4210 43392077824 131264512 @.snapshots/1775/snapshot
0/4261 197735538688 1545723904 @home/.snapshots/1811/snapshot
0/4262 43364900864 109977600 @.snapshots/1800/snapshot
0/4315 199007887360 2477486080 @home/.snapshots/1836/snapshot
0/4316 43392901120 60137472 @.snapshots/1825/snapshot
0/4365 199153360896 499658752 @home/.snapshots/1858/snapshot
0/4366 43373875200 3051520 @.snapshots/1847/snapshot
0/4381 199269126144 611155968 @home/.snapshots/1866/snapshot
0/4382 43373932544 3043328 @.snapshots/1855/snapshot
0/4429 199583887360 651161600 @home/.snapshots/1889/snapshot
0/4430 43374006272 26869760 @.snapshots/1878/snapshot
0/4517 199715659776 443428864 @home/.snapshots/1931/snapshot
0/4518 43463548928 2854912 @.snapshots/1920/snapshot
0/4521 199673978880 341987328 @home/.snapshots/1933/snapshot
0/4522 43463548928 1445888 @.snapshots/1922/snapshot
0/4525 199664271360 359690240 @home/.snapshots/1935/snapshot
0/4526 43463548928 1429504 @.snapshots/1924/snapshot
0/4529 199657545728 348688384 @home/.snapshots/1937/snapshot
0/4530 43463548928 2117632 @.snapshots/1926/snapshot
0/4533 199663243264 359550976 @home/.snapshots/1939/snapshot
0/4534 43464167424 5672960 @.snapshots/1928/snapshot
0/4537 199661416448 338726912 @home/.snapshots/1941/snapshot
0/4538 43464171520 3645440 @.snapshots/1930/snapshot
0/4541 199676805120 346292224 @home/.snapshots/1943/snapshot
0/4542 43464192000 5369856 @.snapshots/1932/snapshot
0/4545 199558840320 67620864 @home/.snapshots/1944/snapshot
0/4546 43656331264 28667904 @.snapshots/1933/snapshot
0/4549 199553486848 2633728 @home/.snapshots/1946/snapshot
0/4550 43656351744 4964352 @.snapshots/1935/snapshot
0/4551 199553486848 81920 @home/.snapshots/1947/snapshot
0/4552 43656368128 212992 @.snapshots/1936/snapshot
0/4553 199553486848 49152 @home/.snapshots/1948/snapshot
0/4554 43656368128 131072 @.snapshots/1937/snapshot
该Referenced列总计为 7897677631488 (7.9TB)，独占列总计为 153471860736 (153GB)，这两个列都与 1TB 驱动器实际报告的磁盘使用情况相差甚远。
df -h报告已使用 716G，可用 212G。
btrfs fi df -h /
Data, single: total=690.00GiB, used=687.40GiB
System, DUP: total=32.00MiB, used=112.00KiB
Metadata, DUP: total=16.00GiB, used=13.59GiB
GlobalReserve, single: total=512.00MiB, used=0.00B
我的主目录中只有一个目录，为了避免计算/home/.snapshots目录数，我只是在主目录上运行了以下命令：
btrfs fi du -s /home/user
Total Exclusive Set shared Filename
200.01GiB 13.20MiB 184.65GiB /home/user
@home如果您足够仔细地观察它，它几乎达到上面输出中的参考值 199570546688 qgroups，并且也接近 报告的 203G du -shc /home/user。
我已经尝试过的事情
我已经运行了以下清理命令并等待完成：
btrfs check（从 USB 记忆棒启动，然后在设备上执行）btrfs scrub /正常操作期间在已安装的根上，以及btrfs balance /btrfs quota disable /btrfs quota enable /以防配额误报。
他们在总数上都没有明显的差异。
非常感谢期待！