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df cmd calculates wrong percent usage (FC6)


wondering about the df cmd output:

df -k

Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/hdb1             10078820   4932492   4634344  52% /
/dev/hdb3             14418352   1552904  12133036  12% /disk2
/dev/sda1            110871076   6906248  98332844   7% /usbdisk
/dev/sda2             30233928  12583336  16114780  44% /SYSTEM_BACKUP

In the first filesystem line e.g., there is a usage of 4932492 blocks against 10078820 number of blocks in the filesystem, this are rounded 49% and not 52%. It seems that the "use%" is taken from another data source than from "Used/1K-blocks".

How should i interprete this? Feature or bug?


Joachim Backes <joachim backes rhrk uni-kl de>
University of Kaiserslautern,Computer Center [RHRK],
Systems and Operations, High Performance Computing,
D-67653 Kaiserslautern, PO Box 3049, Germany
Phone: +49-631-205-2438, FAX: +49-631-205-3056

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