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

[Ben Wellborn]

OK this is fantastic.   Removing the package and clearing the cached
appliances worked!  Note to self: avoid using the cert-forensics-tools
repository on servers running kvm.
Thanks so much for your help.

On 5/26/20 3:24 AM, Richard W.M. Jones wrote:
> 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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>