size from df -kh vs size from fdisk -l

Jeff Voskamp javoskam at uwaterloo.ca
Tue Apr 21 14:57:19 UTC 2009


Andrew Parker wrote:
> On Tue, Apr 21, 2009 at 8:37 AM, jackson byers <byersjab at gmail.com> wrote:
>   
>> # fdisk -l
>>
>> Disk /dev/sda: 36.7 GB, 36703934464 bytes
>> 255 heads, 63 sectors/track, 4462 cylinders
>> Units = cylinders of 16065 * 512 = 8225280 bytes
>>
>>    Device Boot      Start         End      Blocks   Id  System
>> /dev/sda1   *           1        2676    21494938+  83  Linux
>> /dev/sda2            2677        3163     3911827+  82  Linux swap / Solaris
>> /dev/sda3            3164        4462    10434217+  83  Linux
>>
>> sda1 size  ~ 21.5 G
>>
>> but using df:
>> # df -kh
>> Filesystem            Size  Used Avail Use% Mounted on
>> /dev/sdb6             7.7G  5.6G  1.8G  77% /
>> tmpfs                1014M     0 1014M   0% /dev/shm
>> /dev/sda1             190M  5.6M  175M   4% /mnt/sda1
>>
>> sda1 size = 190M
>>     
>
> df comes from the file system rather than the partition.  is it
> possible that the sda1 partition was resized but not reformatted?
>
> if you can stand to lose the data, can you reformat the file system?
> do you then get the expected size?
>   
Or just try "resize2fs /dev/sda1" to resize the filesystem to the size 
of the underlying partition.

Jeff




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