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Description of problem: When attempting to run mock, it sets up the chroot, does a yum checkout and then attempts to create a group with gid 498. However, this gid is already taken by the exim group. ===== BUILDING FEDORA 11 i586 ===== INFO: mock.py version 0.9.16 starting... State Changed: init plugins State Changed: start INFO: Start(sssd-2009082114-0.fc11.src.rpm) Config(fedora-11-i386) State Changed: lock buildroot State Changed: clean State Changed: init State Changed: lock buildroot Mock Version: 0.9.16 INFO: Mock Version: 0.9.16 INFO: enabled root cache INFO: enabled yum cache State Changed: cleaning yum metadata INFO: enabled ccache State Changed: running yum ERROR: Exception(sssd-2009082114-0.fc11.src.rpm) Config(fedora-11-i386) 0 minutes 55 seconds INFO: Results and/or logs in: /var/lib/mock/fedora-11-i386/result ERROR: Command failed. See logs for output. # ['/usr/sbin/groupadd', '-g', '498', 'mockbuild'] Version-Release number of selected component (if applicable): How reproducible: Every time Steps to Reproduce: 1. Run mock Actual results: Mock exits with the error listed above Expected results: Mock runs to completion Additional info: I manually changed the gid of the 'mock' group on the host to 200 and it completed successfully. Mock needs to ensure that no other package steals the mock gid during yum setup.
This is most likely a package in the F11 set that incorrectly allocates its group ID, and thus tramples on the one that mock needs. I'll need to know what package took that GID in the chroot.
As mentioned in the original summary, the "exim" package is taking over that GID.
Bingo. The exim package has UID/GID of 93 reserved, but doesn't actually create the exim group with ID 93 during package install, instead letting useradd pick one for it. This needs to be fixed in exim, both in F-11 and devel.
By just adding 'groupadd -g 93 exim' to the %pre script, then adding '-g exim' to the existing useradd command? Both of those commands are run unconditionally -- is that right? Other packages seem to do the same. @@ -329,7 +332,8 @@ touch $RPM_BUILD_ROOT/%_var/spool/exim/d rm -rf $RPM_BUILD_ROOT %pre -%{_sbindir}/useradd -d %{_var}/spool/exim -s /sbin/nologin -G mail -M -r -u 93 exim 2>/dev/null +%{_sbindir}/groupadd -g 93 exim 2>&1 +%{_sbindir}/useradd -d %{_var}/spool/exim -s /sbin/nologin -G mail -M -r -u 93 -g exim exim 2>/dev/null # Copy TLS certs from old location to new -- don't move them, because the # config file may be modified and may be pointing to the old location.
that seems like it would do it, although I would use the variables to detect if this is the initial install of exim vs an upgrade. You don't need to add users/groups on upgrades, just the first install.
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