bug#6268: Suggestion: truncate should allow -r and -s options together (original) (raw)
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From: | Richard W.M. Jones |
---|---|
Subject: | bug#6268: Suggestion: truncate should allow -r and -s options together |
Date: | Tue, 25 May 2010 15:32:05 +0100 |
User-agent: | Mutt/1.5.18 (2008-05-17) |
The manpage for truncate says:
Note that the -r and -s options are mutually exclusive.
and indeed you cannot have both:
$ truncate -r /tmp/ref -s +10M /tmp/new
truncate: you must specify one of --size' or
--reference'
We suggest using the 'truncate' command in the 'virt-resize' documentation[1]. We want users to create a file which is the size of an existing file + some extra amount. Naturally this would be:
truncate -r old-disk.img -s +1G new-disk.img
but this does not work and we have to suggest that users use two separate 'truncate' commands[2].
Related to this feature request, it would be nice if you could suffix a size with a % sign to indicate that you want to increase a file by a certain percentage of the old or reference size, eg:
truncate -r old-disk.img -s +10% new-disk.img
truncate -r old-disk.img -s 110% new-disk.img
Neither of these forms work at the moment.
Rich.
[1] http://libguestfs.org/virt-resize.1.html#expanding_a_virtual_machine_disk [2] http://git.annexia.org/?p=libguestfs.git;a=commitdiff;h=0e28e4104d96bf0bf5b88fb07bb7e5f9f6e6f41f#patch1
-- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming blog: http://rwmj.wordpress.com Fedora now supports 80 OCaml packages (the OPEN alternative to F#) http://cocan.org/getting_started_with_ocaml_on_red_hat_and_fedora
- bug#6268: Suggestion: truncate should allow -r and -s options together,Richard W.M. Jones <=
- bug#6268: Suggestion: truncate should allow -r and -s options together, Pádraig Brady, 2010/05/25
* bug#6268: Suggestion: truncate should allow -r and -s options together, Pádraig Brady, 2010/05/26
* bug#6268: Suggestion: truncate should allow -r and -s options together, Richard W.M. Jones, 2010/05/26
* bug#6268: Suggestion: truncate should allow -r and -s options together, Jim Meyering, 2010/05/28
* bug#6268: Suggestion: truncate should allow -r and -s options together, Pádraig Brady, 2010/05/28
* bug#6268: Suggestion: truncate should allow -r and -s options together, Pádraig Brady, 2010/05/28
* bug#6268: Suggestion: truncate should allow -r and -s options together, Jim Meyering, 2010/05/29
* bug#6268: Suggestion: truncate should allow -r and -s options together, Pádraig Brady, 2010/05/29
* bug#6268: Suggestion: truncate should allow -r and -s options together, Voelker, Bernhard, 2010/05/31
* bug#6268: Suggestion: truncate should allow -r and -s options together, Pádraig Brady, 2010/05/31
- bug#6268: Suggestion: truncate should allow -r and -s options together, Pádraig Brady, 2010/05/25
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