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Old 05-26-2006
Mike
 
Posts: n/a
Default Re: "df" available space output

Chris F.A. Johnson wrote:
> On 2006-05-25, Mike wrote:
>> Hello,
>>
>> I'm administering some RH 7.3 boxes and noticed that the "Available
>> Space" output column is not a direct subtraction. For example, the output:
>>
>> """
>> Filesystem 1k-blocks Used Available Use% Mounted on
>> /dev/cciss/c0d0p1 248911 98858 137202 42% /
>> """
>>
>> Calculating "1k-blocks - Used": 248911 - 98858 = 150053
>>
>> Why doesn't it match the available space? I have been administering unix
>> based servers for a while, but this was something I never paid close
>> attention to because it was trivial. I'm assuming each file system has
>> some data structure that's accounted for in the Available space.

>
> On most systems, a portion of every file system is reserved for use
> by the superuser, and not included in the available space.
>


That would be a good thing for root to login :)

Thanks, Davide/Chris.

--
Mike
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