see file system space

vucni45 · 08-20-2021, 04:08 AM

hi,
How is correct to see file system space in btrfs?
btrfs fi show /
Label: none uuid: 1e8488cf-bb5c-4f4c-86c6-b74e99c03bca
Total devices 1 FS bytes used 4.47GiB
devid 1 size 18.97GiB used 7.02GiB path /dev/sda2

or
linux-l9l8:~ # df -h /
Filesystem Size Used Avail Use% Mounted on
/dev/sda2 19G 4.7G 13G 27% /

used space is 7.02GiB or 4.7G?

frankbell · 08-20-2021, 08:02 PM

This should answer your question: https://www.geeksforgeeks.org/df-com...with-examples/

Per the link, the normal output (without the "-h" argument) is

Quote:

Filesystem 1K-blocks Used Available Use% Mounted on

mrmazda · 08-21-2021, 01:56 AM

Using only df might leave one mislead. A more appropriate reference is on opensuse.org:

Code:

# inxi -Sy
System:    Host: ta205 Kernel: 5.3.18-lp152.78-default x86_64 bits: 64
  Console: tty pts/0 (vt 2) Distro: openSUSE Leap 15.2 
# df -h /
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda2        47G  9.3G   37G  21% /
# btrfs filesystem df -h /
Data, single: total=12.01GiB, used=8.98GiB
System, single: total=32.00MiB, used=16.00KiB
Metadata, single: total=776.00MiB, used=237.19MiB
GlobalReserve, single: total=24.44MiB, used=0.00B
# btrfs fi df -h /
Data, single: total=12.01GiB, used=8.98GiB
System, single: total=32.00MiB, used=16.00KiB
Metadata, single: total=776.00MiB, used=237.34MiB
GlobalReserve, single: total=24.44MiB, used=0.00B
# parted -l
Model: ATA SanDisk SDSSDA12 (scsi)
Disk /dev/sda: 120GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: pmbr_boot

Number  Start   End     Size    File system     Name  Flags
 1      1049kB  9437kB  8389kB                        bios_grub
 2      9437kB  50.0GB  50.0GB  btrfs                 legacy_boot
 3      50.0GB  118GB   67.8GB  ext4
 4      118GB   120GB   2148MB  linux-swap(v1)        swap