in reply to Trying to get drive space info on remote Windows servers

It looks like the backslash before your dollar sign is causing the problem; being in single-quotes, there's nothing special about the dollar sign, so the resulting string is:

\\server01\c\$

instead of the more-likely-in-a-windows-environment:

\\server01\c$

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Re^2: Trying to get drive space info on remote Windows servers
by Cloudster (Novice) on Feb 18, 2010 at 18:13 UTC
    Still no joy. Here's the current code: 
    use Win32::DriveInfo;

use constant {
    SECTORS_PER_CLUSTER => 0,
    BYTES_PER_SECTOR    => 1,
    FREE_CLUSTERS       => 2,
    TOTAL_CLUSTERS      => 3,
    BYTES_FREE_4_CALLER => 4,
    TOTAL_BYTES         => 5,
    TOTAL_FREE          => 6,
};

#$sql = "\\\\server01\\d\$";
$sql = "c:";

print "$sql\n";
print "Drive    Free    Tot    PctFree\n";

my @info = Win32::DriveInfo::DriveSpace($sql) 
    or die "DriveSpace failed with error: $^E";

printf "%.3f GB free of total %.3f GB\n", 
     $info[ TOTAL_FREE ] / 1024**3, 
     $info[ TOTAL_BYTES ] / 1024**3;

    [download]
    If I run it against the server specified in the line that's commented out, it returns zeroes and no error. If I run it against my C:, it returns accurate numbers. So I don't think it's going out to the network, yet it isn't returning an error.

    Here's the output of two runs: 
    c:\Perl>drivelist.pl
\\server01\d$
Drive   Free    Tot     PctFree
0.000 GB free of total 0.000 GB

c:\Perl>drivelist.pl
c:
Drive   Free    Tot     PctFree
31.639 GB free of total 74.444 GB

    [download]
[reply]
[d/l]
[select]

      Try printing $^E unconditionally, immediately after call. It might show an error that the module is failing to act upon.

[reply]
[d/l]
        The thought plickens!

        Here's the latest generation of the code:
        use Win32::DriveInfo;

use constant {
    SECTORS_PER_CLUSTER => 0,
    BYTES_PER_SECTOR    => 1,
    FREE_CLUSTERS       => 2,
    TOTAL_CLUSTERS      => 3,
    BYTES_FREE_4_CALLER => 4,
    TOTAL_BYTES         => 5,
    TOTAL_FREE          => 6,
};

#$sql = "\\\\server01\\d\$";
$sql = "c:";

print "$sql\n";
print "Drive    Free    Tot    PctFree\n";

my @info = Win32::DriveInfo::DriveSpace($sql) ;
print "$^E\n";
#    or die "DriveSpace failed with error: $^E";

printf "%.3f GB free of total %.3f GB\n", 
     $info[ TOTAL_FREE ] / 1000**3, 
     $info[ TOTAL_BYTES ] / 1000**3;

        [download]
        And here's the output of two runs: 
        c:\Perl>drivelist.pl
\\sql-01\d$
Drive   Free    Tot     PctFree

0.000 GB free of total 0.000 GB

c:\Perl>drivelist.pl
c:
Drive   Free    Tot     PctFree
The specified procedure could not be found
31.283 GB free of total 74.444 GB

c:\Perl>dir
 Volume in drive C is cMore
 Volume Serial Number is A07E-ED9D

 Directory of c:\Perl

02/18/2010  10:59 PM    <DIR>          .
02/18/2010  10:59 PM    <DIR>          ..
05/30/2008  03:51 PM    <DIR>          bin
05/30/2008  03:51 PM    <DIR>          eg
05/30/2008  03:51 PM    <DIR>          etc
05/30/2008  03:52 PM    <DIR>          html
05/30/2008  03:51 PM    <DIR>          lib
05/30/2008  03:51 PM    <DIR>          man
05/30/2008  03:51 PM    <DIR>          site
02/18/2010  10:58 PM               629 drivelist.bak
02/18/2010  10:59 PM               628 drivelist.pl
               2 File(s)          1,257 bytes
               9 Dir(s)  33,590,083,584 bytes free

        [download]
        So if I point it to my local drive, I get an error condition but I get correct results. If I point it to a server $root share, I get no results but nothing in the error string. And I tried running it against my local machine as a \\pcname\c$ and got the same result as a remote server, zeroes for space and no error.

        I noticed the discrepency on disk space. Turns out I need to divide by 1000**3 rather than 1024**3. Easy fix there. I have a couple of thoughts that I'll try tomorrow when I'm in the office.

        I should have mentioned the Perl version that I'm running is:
        c:\Perl>perl -v

This is perl, v5.10.0 built for MSWin32-x86-multi-thread
(with 5 registered patches, see perl -V for more detail)

Copyright 1987-2007, Larry Wall

Binary build 1003 [285500] provided by ActiveState http://www.ActiveSt
+ate.com
Built May 13 2008 16:52:49

        [download]
        I should probably look at an update tomorrow, but I don't think that's the issue. My PC is XP Pro SP3. I'm logged on as a general user but running a command prompt session as my network admin login, so if I do a 'dir \\server01\d$', I see results just fine.
[reply]
[d/l]
[select]

      Strange; works fine here with all drives/shares I have access to.

      I don't know if it would a prove useful diagnostic, but have you tried checking your C: drive via \\yourpc\c$ instead of c:?

[reply]
[d/l]
[select]

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