On 10/24/14 18:24, Pádraig Brady wrote:
> 
> Note /home doesn't seem to be accessible above
> which is another reason to prefer /data here.
> 

What do you mean by "not accessible"? Both /home and
/data work fine.

> In general I think df is behaving correctly here,
> showing what file system space is available on the system.
> If it showed both there would be an ambiguity as to
> whether there were two such file systems available.
> 
> If you want to see all nfs file systems you can do it explicitly like:
> 
>   df -a -t nfs
> 

Sure, unless I am on a "non-coreutils" system, e.g. on AIX:

bash-3.2# df
Filesystem    512-blocks      Free %Used    Iused %Iused Mounted on
/dev/hd4         4194304   3740000   11%    11555     3% /
/dev/hd2        12582912   6930544   45%    52597     7% /usr
/dev/hd9var      2097152   1111480   48%     9899     7% /var
/dev/hd3        16777216  10351952   39%  2782595    70% /tmp
/dev/fwdump      2097152   2096160    1%        5     1% /var/adm/ras/platform
/dev/hd1         2097152   2090592    1%       96     1% /_home
/dev/hd11admin    2097152   2096112    1%        5     1% /admin
/proc                  -         -    -         -     -  /proc
/dev/hd10opt    16777216  15234200   10%    21122     2% /opt
/dev/livedump    2097152   2096176    1%        4     1% /var/adm/ras/livedump
/dev/fslv00    268435456 268393504    1%        4     1% /usr/sys/inst.images
/dev/fslv01   1073741824 203972016   82%  2446798    10% /export
/dev/fslv02     16777216  16410968    3%     9267     1% /sample
/dev/fslv05   4194304000 3139006384   26%  3308821     1% /local
nfs-data:/space/data 26781332448 3661107344   87% 60070969     8% /data
nfs-home:/space/home 26781332448 3661107344   87% 60070969     8% /home

bash-3.2# df -a -t nfs
df: Not a recognized flag: a
Usage: df  [-P] | [-IMitv] [-gkm] [-s] [filesystem ...] [file ...]


Please note that both "nfs-data" and "nfs-home" are CNAMEs for
the same NFS server. /etc/fstab on Linux says

nfs-home:/space/home   /home  nfs   noatime
nfs-data:/space/data   /data  nfs   noatime

The AIX host from the example is setup similar to this.

Surely I am not asking you to support AIX' df flags. But it
would be nice if the central tools included in coreutils stay
in line with other systems.


BTW, the coreutils man page says about "-a": "include dummy file
systems". Sorry to say, but this is misleading. "/home" is not
dummy at all. Its a valid mount point, seperate from others. Esp.
there is no local partition mounted for "/home", hidden by the
NFS mount.


Regards
Harri


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