On 10/28/14 9:19 PM, Chris Murphy wrote:
3.18.0-0.rc2.git1.1.fc22.x86_64
btrfs-progs-3.17-1.fc21.x86_64
# btrfs fi show /mnt
Label: 'btrfs1' uuid: 0f1c615f-30a0-4166-8a3c-987849551513
Total devices 2 FS bytes used 233.54GiB
devid1 size 465.76GiB used 236.03GiB path /dev/sdb
devid2 size 298.09GiB used 236.03GiB path /dev/sdc
# df -h /mnt
Filesystem Size Used Avail Use% Mounted on
/dev/sdb382G 234G 65G 79% /mnt
a. df -h should report Size as 298GiB rather than as 382GiB.
Because this is 2 device raid1, the limiting factor is devid 2 @ 298GiB.
b. df -h should report Avail as 62GiB or less, rather than as 65GiB.
298.09 - 236.03 = 62.06
Is there an fstest for btrfs disk space reporting?
ext2/3/4 used to keep getting overhead wrong for various filesystem
types ... until we wrote a regression test.
Just sayin' :)
-Eric
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