Bug 27626

Summary: df shows information that doesnt add up
Product: [Retired] Red Hat Linux Reporter: Dan Taylor <daniel_a_taylor>
Component: fileutilsAssignee: Bernhard Rosenkraenzer <bero>
Status: CLOSED NOTABUG QA Contact: Aaron Brown <abrown>
Severity: medium Docs Contact:
Priority: high    
Version: 7.1CC: fred_treasure, mick_tantasirikorn
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2001-02-14 16:09:59 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Dan Taylor 2001-02-14 16:09:47 UTC 
df seems to show information that does not add up. Available + used != 
total.  This seems to be more noticable the larger the drive.  /dev/sdd 
shows almost 2 gigs missing.

----------------Example------------------
Filesystem           1k-blocks      Used Available Use% Mounted on
/dev/sda6              4633076    157824   4239904   4% /
none                         0         0         0   -  /proc
usbdevfs                     0         0         0   -  /proc/bus/usb
/dev/sda2                23333     11977     10152  55% /boot
/dev/sda5              9218620   2123344   6626984  25% /usr
/dev/sdb1             17496684        20  16607872   1% /usr2
/dev/sdc1             17496684        20  16607872   1% /usr3
/dev/sdd1             35001508        20  33223496   1% /usr4
none                         0         0         0   -  /dev/pts
/dev/sda1              3099260      1404   2940424   1% /home
automount(pid534)            0         0         0   -  /misc
--------------------End-------------------
----------------Start /proc/partitions------------
major minor  #blocks  name     rio rmerge rsect ruse wio wmerge wsect wuse 
running use aveq

   8     0   17783239 sda 2137 6812 68448 12630 1031 160 9480 35530 0 
11520 48160
   8     1    3148708 sda1 11 3 46 60 1 0 8 0 0 60 60
   8     2      24097 sda2 24 477 1002 200 5 3 16 40 0 240 240
   8     3          1 sda3 0 0 0 0 0 0 0 0 0 0 0
   8     5    9365863 sda5 1140 4069 41606 4300 149 32 1448 18890 0 4680 
23190
   8     6    4707013 sda6 960 2263 25778 8050 876 125 8008 16600 0 8060 
24650
   8     7     530113 sda7 2 0 16 20 0 0 0 0 0 20 20
   8    16   17783239 sdb 14 62 176 20 1 0 8 0 0 20 20
   8    17   17775891 sdb1 13 62 174 10 1 0 8 0 0 10 10
   8    32   17783239 sdc 14 62 176 10 1 0 8 0 0 10 10
   8    33   17775891 sdc1 13 62 174 0 1 0 8 0 0 0 0
   8    48   35566479 sdd 15 62 184 10 1 0 8 0 0 10 10
   8    49   35559846 sdd1 14 62 182 10 1 0 8 0 0 10 10
------------------------------------------------------
# fdisk -l /dev/sdd
kernel version 132096

Disk /dev/sdd: 255 heads, 63 sectors, 4427 cylinders
Units = cylinders of 16065 * 512 bytes

   Device Boot    Start       End    Blocks   Id  System
/dev/sdd1   *         1      4427  35559846   83  Linux
Comment 1 Bill Nottingham 2001-02-14 17:44:32 UTC 
About 5% of the space on any normal filesystem is reserved for root, and is
not shown in the 'available' display.