uml_mkcow(1)



UML_MKCOW(1)                General Commands Manual               UML_MKCOW(1)

NAME
       uml_mkcow -- create a new COW file

SYNOPSIS
       uml_mkcow [-f]  [COW_file]  [backing_file]

DESCRIPTION
       This manual page documents briefly the uml_mkcow command.

       This  manual  page  was  written  for the Debian GNU/Linux distribution
       because the original program does not have a manual page.  Instead,  it
       has documentation in HTML format; see below.

       uml_mkcow  is a small utility to create COW (Copy-On-Write) files with-
       out the need to run the full UML kernel.

       NOTE: you can save a lot of disk space using COW files.  When  checking
       the  size of the COW file in order to see the gobs of space that you're
       saving, make sure you use 'ls -ls' to see the actual  disk  consumption
       rather  than  the  length  of  the file. The COW file is sparse, so the
       length will be very different from the disk usage.

OPTIONS
       -f        Force overwrite of an exsiting COW file.

EXAMPLES
       Create a new COW file:

       uml_mkcow rootfs_COW rootfs

       Overwrite (destroying) an existing COW file:

       uml_mkcow -f rootfs_COW rootfs

SEE ALSO
       The UserModeLinux-HOWTO  (link  to  URL  http://user-mode-linux.source-
       forge.net/UserModeLinux-HOWTO.html)

AUTHOR
       uml_mkcow was written by Steve Schnepp.

       This  manual page was written by Mattia Dongili malattia@debian.org for
       the Debian GNU/Linux system, based on material  in  the  UserModeLinux-
       HOWTO by Rusty Russell.

                                                                  UML_MKCOW(1)

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