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Full Discussion: File system full, but not really.
Operating Systems Linux Red Hat File system full, but not really. Post 302521905 by pludi on Thursday 12th of May 2011 05:00:41 PM
Old 05-12-2011
Removing the inode pointing to a file doesn't mean the file is really removed. As long as a process still has an open handle to that file it can continue to read and write to that file. Only when that handle is closed too, the space is reclaimed.

The difference between df and du is also explained by this. df checks for used/unused inodes and blocks (asking the FS module for that data), while du just checks the directory indexes for files. If a file is removed but still in use, that space is marked used in the file system (seen by df), while du can't see it anymore.

Next time, check with lsof or fuser which process and user is accessing that file.
 

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LEARN ABOUT DEBIAN

rhn-channel

SPACEWALK-CHANNEL(8)						   Red Hat, Inc.					      SPACEWALK-CHANNEL(8)

NAME

       spacewalk-channel - Subscribe to or unsubscribe system from channel.

SYNOPSIS

       spacewalk-channel [options]

DESCRIPTION

       spacewalk-channel  allows  you to subscribe to and unsubscribe from specified channels via the command line. A visit to the Red Hat Network
       (or Spacewalk) website isn't required.

OPTIONS

       -l, --list
	      Print a list of channel(s) that you are currently subscribed to.

       -L, --available-channels
	      Print a list of all available child channels.

       -a, --add
	      You are subscribing system to given channel(s). You have to specify --user and --password.

       -r, --remove
	      You are unsubscribing system to given channel(s). You have to specify --user and --password.

       -u, --user
	      Your username used to register the system with and for Red Hat Network, RHN Satellite or Spacewalk.  If you do not enter this option
	      and it is required, you will be prompted.

       -p, --password
	      The  password  associated  with the username specified with the --user option. This is an unencrypted password.  If you do not enter
	      this option and it is required, you will be prompted.

       -c, --channel
	      Label of channel you want to subscribe to or unsubscribe from. Can be specified multiple times.

       -v, --verbose
	      Print out successfull action.

       -h, --help
	      Show a help message and exit.

NOTE

       The addition and removal of channels is mutually exclusive, please use the command twice.

EXAMPLES

       Subscribe to two channels:

	      spacewalk-channel --add -c rhn-tools-rhel-i386-server-5 -c rhel-i386-server-vt-5 --user username --password password

       Unsubscribe from channel:

	      spacewalk-channel --remove -c rhn-tools-rhel-i386-server-5 -c rhel-i386-server-vt-5 --user username --password password

       List subscribed channels:

	      spacewalk-channel --list

SEE ALSO

       rhnplugin(8), rhn_register(8), up2date(5).

AUTHORS

       Miroslav Suchy <msuchy@redhat.com>

BUGS

       Report bugs to <http://bugzilla.redhat.com>.

COPYRIGHT

       Copyright (C) 2009-2010 Red Hat, Inc.

       This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
       LAR PURPOSE.

Linux								  2010 August 30					      SPACEWALK-CHANNEL(8)
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