Package: coreutils
Version: 5.97-5.3
Severity: wishlist

When setting up test environments (chroots and Xen domains) I often want to
duplicate one block device or large file to several others.

If I am creating three copies I don't want to read the data three times and
write it three times, I want to read it once and write it three times.

dd if=source of=dest1 of=dest2 of=dest3 bs=102400k

The ideal would be something like the above.  But a separate utility as part
of coreutils to perform the same task would be OK.

Ideally such a program would use asynchronous IO or threads to allow all
writes to be performed at the same time (when writing to a RAID array three
writes theoretically can potentially be completed in the same amount of time
as one write).

-- System Information:
Debian Release: 4.0
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.18-5-686
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=ANSI_X3.4-1968) 
(ignored: LC_ALL set to C)

Versions of packages coreutils depends on:
ii  libacl1                2.2.41-1          Access control list shared library
ii  libc6                  2.3.6.ds1-13etch5 GNU C Library: Shared libraries
ii  libselinux1            2.0.15-2.etch1    SELinux shared libraries

coreutils recommends no packages.

-- no debconf information



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