[libvirt] Bump tar format?

[Peter Krempa]

On Wed, Jul 22, 2015 at 09:57:02 -0600, Eric Blake wrote:
> On 07/22/2015 08:44 AM, Andrea Bolognani wrote:
> >   1. rename the test case, making it shorter;
> 
> Works if we can do it, but I agree we should add a syntax check to
> enforce it.
> 
> > 
> >   2. bump tar format from ustar, which has limitations on the length
> >      of file names, to posix/pax, which has no such limitations.
> 
> Might be doable, if RHEL 5 autoconf/automake/tar supports it.  Here's
> where we switched to ustar:

Do we actually really think that anybody would ever use a very recent
libvirt with a very old operating system? I think we should draw a line
at some point. </rant>

Also RHEL-5 tar can use --format=posix:

[root at rhel-5 ~]# cat /etc/redhat-release 
Red Hat Enterprise Linux Server release 5.11 (Tikanga)
[root at rhel-5 ~]# tar --format=posix -cvvf /tmp/garbage /etc/redhat-release      
tar: Removing leading `/' from member names
-rw-r--r-- root/root        55 2014-08-12 07:07:17 /etc/redhat-release
[root at rhel-5 ~]# tar --format=pax -cvvf /tmp/garbage /etc/redhat-release   
tar: Removing leading `/' from member names
-rw-r--r-- root/root        55 2014-08-12 07:07:17 /etc/redhat-release

Peter
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