GNU bug report logs - #8380
"tar u" ignores files if archive modification time >= folder modification time

Previous Next

To add a comment to this bug, you must first unarchive it, by sending
a message to control AT debbugs.gnu.org, with unarchive 8380 in the body.
You can then email your comments to 8380 AT debbugs.gnu.org in the normal way.

Toggle the display of automated, internal messages from the tracker.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Karsten Loesing <karsten.loesing <at> gmx.net>
To: bug-coreutils <at> gnu.org
Subject: "tar u" ignores files if archive modification time >= folder
	modification time
Date: Wed, 30 Mar 2011 14:13:58 +0200

[Message part 1 (text/plain, inline)]

Hello list,

today I found that "tar u" doesn't update an archive unless the folder's
modification time is newer than the archive's modification time.

So, for example, creating a folder files/ with file-1, creating a test.tar
from it, creating another file files/file-2, and updating test.tar won't
add file-2 if this all happens in the same second.

Even touching files/file-2 a few seconds later won't add it to the tarball
if one tries to update it.

The only way to add files/file-2 is to touch the files/ folder before
updating the tarball.

Please find the attached shell script for an example.

I'm running "tar (GNU tar) 1.20", and I confirmed that "bsdtar 2.6.2 -
libarchive 2.6.2" on Mac OS X 10.6 behaves differently.  So, either this
is a bug, or at least a documentation/usability problem.

Thanks,
Karsten

[test-tar.sh (application/x-sh, attachment)]

Message #10 received at 8380-done <at> debbugs.gnu.org (full text, mbox):

From: Pádraig Brady <P <at> draigBrady.com>
To: 8380-done <at> debbugs.gnu.org
Subject: Re: bug#8380: "tar u" ignores files if archive modification time
	>=	folder modification time
Date: Wed, 30 Mar 2011 14:39:08 +0100

tags 8380 + notabug

I suggest you resend this to bug-tar <at> gnu.org

cheers,
Pádraig.

Message #13 received at 8380 <at> debbugs.gnu.org (full text, mbox):

From: Eric Blake <eblake <at> redhat.com>
To: Karsten Loesing <karsten.loesing <at> gmx.net>
Cc: 8380 <at> debbugs.gnu.org
Subject: Re: bug#8380: "tar u" ignores files if archive modification time
	>=	folder modification time
Date: Wed, 30 Mar 2011 07:41:24 -0600

[Message part 1 (text/plain, inline)]

On 03/30/2011 06:13 AM, Karsten Loesing wrote:
> Hello list,
> 
> today I found that "tar u" doesn't update an archive unless the folder's
> modification time is newer than the archive's modification time.

Thanks for the report; however, this would better be reported to the
bug-tar list, since tar is not part of GNU coreutils.

-- 
Eric Blake   eblake <at> redhat.com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

[signature.asc (application/pgp-signature, attachment)]

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.