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bug#7355: coreutils df on OSX reports wrong sizes for large filesystems
From: |
Pádraig Brady |
Subject: |
bug#7355: coreutils df on OSX reports wrong sizes for large filesystems |
Date: |
Mon, 08 Nov 2010 23:13:30 +0000 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 |
On 08/11/10 20:37, Tim Spriggs wrote:
> Hello,
>
> I am running gentoo-prefix on OSX which builds coreutils. When I
> compare the output of the system df to the standard GNU df I get:
>
>
> $ /bin/df -h /data/hirise06
> Filesystem Size Used Avail Capacity Mounted on
> hiserve2:/vol/hirise06 7.9Ti 430Gi 7.5Ti 6% /data/hirise06
>
> $ df -h /data/hirise06
> Filesystem Size Used Avail Use% Mounted on
> hiserve2:/vol/hirise06
> 2.0T 431G -523G - /data/hirise06
>
> The 2.0T size looks suspicious to me. Maybe an integer is overflowing
> somewhere?
Well 2T is between 32 bit and 64 bit.
If I had to guess I'd say df was using a 32 bit statfs
that was returning 1024 blksize?
Could you compare the system calls made by both versions of df.
On GNU/Linux I can trace the statfs calls like:
strace -v -e statfs,statfs64 df /data/hirise06
If the trace for the above gives no output
for either command, then can you include the
full trace output.
thanks,
Pádraig.