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Full Discussion: 'total 0' in ls output
Top Forums UNIX for Advanced & Expert Users 'total 0' in ls output Post 302879965 by solaris_1977 on Monday 16th of December 2013 05:44:28 PM
Old 12-16-2013
This server is a linux virtual server and /dev/simfs is a NAS device, which is mounted as /export on this virtual server.
Code:
(tty/dev/pts/27): bash: 904 > df -h .
Filesystem            Size  Used Avail Use% Mounted on
/dev/simfs            4.9T  983G  3.9T  20% /export
tlifsp13: /export/home/pams/to-klvsp-12162013
(tty/dev/pts/27): bash: 904 > ls -l
total 0          -------> on NAS drive, same data shows zero
-rw------- 1 pams klvsp 3789 Dec 16 11:44 SA89766.TXT
-rw------- 1 pams klvsp 4124 Dec 16 11:44 SA89779.TXT
-rw------- 1 pams klvsp 4106 Dec 16 11:44 SA89785.TXT
-rw------- 1 pams klvsp 4010 Dec 16 11:49 SA89796.TXT
tlifsp13: /export/home/pams/to-klvsp-12162013
(tty/dev/pts/27): bash: 905 > mkdir /var/tmp/test_dir
tlifsp13: /export/home/pams/to-klvsp-12162013
(tty/dev/pts/27): bash: 906 > cp -p * /var/tmp/test_dir/
tlifsp13: /export/home/pams/to-klvsp-12162013
(tty/dev/pts/27): bash: 907 > ls -l /var/tmp/test_dir
total 24              -------> on local drive, same data shows some value
-rw------- 1 pams klvsp 3789 Dec 16 11:44 SA89766.TXT
-rw------- 1 pams klvsp 4124 Dec 16 11:44 SA89779.TXT
-rw------- 1 pams klvsp 4106 Dec 16 11:44 SA89785.TXT
-rw------- 1 pams klvsp 4010 Dec 16 11:49 SA89796.TXT
tlifsp13: /export/home/pams/to-klvsp-12162013
(tty/dev/pts/27): bash: 908 >

There is a script setup in cronjob developed by application team and it says, if total = 0 then do not proceed, if total = more than 1, that file should be sent to some ftp site. Script is not a problem for me, but I was concerned only for that total value. NAS is properly mounted and lot of other users are able to read/write on it, but is there anything else that can be changed from OS side ? I am getting in touch with Storage team also to understand its behavior.
 

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LEARN ABOUT POSIX

pty

PTY(4)							   BSD Kernel Interfaces Manual 						    PTY(4)

NAME

     pty -- BSD-style compatibility pseudo-terminal driver

SYNOPSIS

     device pty

DESCRIPTION

     The pty driver provides support for the traditional BSD naming scheme that was used for accessing pseudo-terminals.  When the device
     /dev/ptyXX is being opened, a new terminal shall be created with the pts(4) driver.  A device node for this terminal shall be created, which
     has the name /dev/ttyXX.

     New code should not try to allocate pseudo-terminals using this interface.  It is only provided for compatibility with older C libraries that
     tried to open such devices when posix_openpt(2) was being called.

FILES

     The BSD-style compatibility pseudo-terminal driver uses the following device names:

     /dev/pty[l-sL-S][0-9a-v]  Pseudo-terminal master devices.

     /dev/tty[l-sL-S][0-9a-v]  Pseudo-terminal slave devices.

DIAGNOSTICS

     None.

SEE ALSO

     posix_openpt(2), pts(4), tty(4)

HISTORY

     A pseudo-terminal driver appeared in 4.2BSD.

BUGS

     Unlike previous implementations, the master slave device nodes are destroyed when the PTY becomes unused.	A call to stat(2) on a nonexistent
     master device will already cause a new master device node to be created.  The master device can only be destroyed by opening and closing it.

     The pty driver cannot be unloaded, because it cannot determine if it is being used.

BSD
								  August 20, 2008							       BSD
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