On 2018/12/21 下午10:22, c.mo...@web.de wrote: > Hi, > > I have defined a quota on home with these steps: > 1. btrfs quota enable /home > 2. btrfs qgroup limit 150G /home > > Now I can verify the corresponding setting: > btrfs qgroup show -reF /home > WARNING: Qgroup data inconsistent, rescan recommended > qgroupid rfer excl max_rfer max_excl > -------- ---- ---- -------- -------- > 0/279 1.79GiB 1.79GiB 150.00GiB none > 255/279 1.79GiB 1.79GiB none none > > However I don't understand the line with qgroupid 0/279?!?
0 is the qgroup level, 0 means the lowest qgroup level for subvolume. 279 is your subvolume id. 255/279 is strange, unless you manually created high level qgroup, it shouldn't be created automatically. > > I have created another quota earlier for /var/log, and there's no second line > in output of btrfs qgroup show: > btrfs qgroup show -reF /var/log > WARNING: Qgroup data inconsistent, rescan recommended > qgroupid rfer excl max_rfer max_excl > -------- ---- ---- -------- -------- > 0/275 56.52MiB 56.52MiB 5.00GiB none > > The following subvolumes do exist: > btrfs su li / > ID 257 gen 134 top level 5 path @ > ID 258 gen 36271 top level 257 path @/.snapshots > ID 259 gen 36312 top level 258 path @/.snapshots/1/snapshot > ID 260 gen 33772 top level 257 path @/boot/grub2/i386-pc > ID 261 gen 33772 top level 257 path @/boot/grub2/x86_64-efi > ID 262 gen 36311 top level 257 path @/opt > ID 263 gen 33772 top level 257 path @/srv > ID 264 gen 36312 top level 257 path @/tmp > ID 265 gen 35961 top level 257 path @/usr/local > ID 266 gen 36310 top level 257 path @/var/cache > ID 267 gen 33772 top level 257 path @/var/crash > ID 268 gen 33772 top level 257 path @/var/lib/libvirt/images > ID 269 gen 33772 top level 257 path @/var/lib/machines > ID 270 gen 33772 top level 257 path @/var/lib/mailman > ID 271 gen 33772 top level 257 path @/var/lib/mariadb > ID 272 gen 33772 top level 257 path @/var/lib/mysql > ID 273 gen 33772 top level 257 path @/var/lib/named > ID 274 gen 33772 top level 257 path @/var/lib/pgsql > ID 275 gen 36312 top level 257 path @/var/log > ID 276 gen 33772 top level 257 path @/var/opt > ID 277 gen 36312 top level 257 path @/var/spool > ID 278 gen 36309 top level 257 path @/var/tmp > ID 279 gen 36311 top level 257 path @/home > ID 280 gen 36311 top level 257 path @/usr/sap > ID 308 gen 17373 top level 258 path @/.snapshots/19/snapshot > ID 309 gen 17373 top level 258 path @/.snapshots/20/snapshot > ID 315 gen 17373 top level 258 path @/.snapshots/25/snapshot > > This is the additional information demanded when asking a support question: > > lvevm117:~ # uname -a > Linux lvevm117 4.4.162-94.72-default #1 SMP Mon Nov 12 18:57:45 UTC 2018 > (9de753f) x86_64 x86_64 x86_64 GNU/Linux This kernel version is very old, especially for qgroup. I won't be surprised if any qgroup related code went crazy. > > lvevm117:~ # btrfs --version > btrfs-progs v4.5.3+20160729 The same to btrfs-progs, it may be btrfs-progs initializing wrong ioctl parameters. Thanks, Qu > > lvevm117:~ # btrfs fi show > Label: none uuid: fbe2e4f1-2ccd-44df-bc35-790c5e019d66 > Total devices 1 FS bytes used 8.78GiB > devid 1 size 198.84GiB used 23.07GiB path /dev/sda3 > > lvevm117:~ # btrfs fi df / > Data, single: total=20.01GiB, used=8.37GiB > System, DUP: total=32.00MiB, used=16.00KiB > Metadata, DUP: total=1.50GiB, used=414.19MiB > GlobalReserve, single: total=27.38MiB, used=0.00B > > > THX >
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