[Libguestfs] libguestfs-tools failure that I can't figure out

Richard W.M. Jones rjones at redhat.com
Tue May 26 09:24:20 UTC 2020


On Tue, May 26, 2020 at 09:04:42AM +0200, Pino Toscano wrote:
> On Monday, 25 May 2020 04:15:23 CEST Ben Wellborn wrote:
> > I'm not sure of the history of the server's libpcap install.  Too many
> > chefs and only one pot.  I know, that doesn't help.  Your question did
> > prompt me to check versions and discover that there's a 1.9.0 version in
> > the BaseOS repo.  I removed the previous package and loaded the new one.
> > 
> > a quick ldd test
> > ~]# ldd /usr/lib/systemd/systemd | grep libpcap
> >     libpcap.so.1 => /lib64/libpcap.so.1 (0x00007fc395a38000)
> 
> This looks fine.
> 
> Also, looking at the libpcap-and-rebuild-testing.txt you provided
> previously, it looked like there is a package, pfring, that installs
> libpcap in /usr/local/lib:
> 
> supermin: rpm: multiple providers: requirement libpcap.so.1()(64bit): providers: libpcap pfring
> supermin: rpm: multiple providers: picked pfring
> 
> At least according to a quick search, it seems that this is the case:
> https://centos.pkgs.org/7/forensics-x86_64/pfring-7.6.0-2990.x86_64.rpm.html
> This is... bad: a package that:
> - installs a library in /usr/local
> - may override a system-critical library
> - even RPM-provides the system library (!)

And omits the /usr/local/lib/libpcap.so.1 symlink from the file list.

I think it would work if only it included this file, although still be
a bad, bad package for all the other reasons.

Rich.

> This is a scholar example of things that can go wrong when packaging
> local stuff :-/
> 
> Do you still have that package installed? Can you please try by
> temporarly removing it?
> 
> > but when I ran virt-sysprep it complains about libpcap again:
> > "systemd-tmpfiles: error while loading shared libraries: libpcap.so.1:
> > cannot open shared object file: No such file or directory"
> 
> Try to clean the cached libguestfs appliance before, using
> $ rm -rf /var/tmp/.guestfs-$(id -u)
> 
> -- 
> Pino Toscano



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