Re: cf cell's df result question

Lior Okman


Usually a certain percentage (5% by default) of the available disk space is
reserved for uid 0. You can check to see what that percentage amounts to in
bytes using the following command if the filesystem is ext{2,3,4}:

echo $(( $(tune2fs -l /dev/xvdb2 |grep "Reserved block count"|cut -f2 -d:
) * $(tune2fs -l /dev/xvdb2 | grep "Block size" |cut -f2 -d: ) ))

See tune2fs(8) for details.

For a 100G disk this would amount to your missing 5G.


On Thu, Sep 14, 2017 at 1:45 PM, 강경원 <kyungwon.kang(a)> wrote:

Hi, when I check the cell's disk, it's using 10G but df result reports
only 5G is used. Can I know why?

diego-cell/b3d42906-84f3-40db-8361-64232dac4ff8:/var/vcap/data# df -h
Filesystem Size Used Avail Use% Mounted on
udev 3.9G 4.0K 3.9G 1% /dev
tmpfs 799M 548K 798M 1% /run
/dev/xvda1 2.9G 1.9G 866M 69% /
none 4.0K 0 4.0K 0% /sys/fs/cgroup
none 5.0M 0 5.0M 0% /run/lock
none 3.9G 3.6M 3.9G 1% /run/shm
none 100M 0 100M 0% /run/user
/dev/xvdb2 91G 5.1G 81G 6% /var/vcap/data


Kyungwon Kang.

강경원(Kang, Kyungwon) Marcus Kang
RHCA/PMP/ITIL Master/OCP(Oracle/Solaris)
클라우드기술그룹(클라우드) M.P: 82-10-8998-2092

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