I have do all that <ServerHowTo> said, and then reboot my machine.
Next day, When i finish the http://fedoraproject.org/wiki/Koji/ServerBootstrap, i found i have not start up kojid and kojira, because "koji regen-repo" cmd don't return.
Then , i start them, and run "koji regen-repo" again , it return this Error !
Does that causing this problem ?
Help !

=========================================================

[eric@wenjia repos]$ koji list-tagged --latest --inherit dist-test-build
Build                                     Tag                   Built by
---------------------------------------- -------------------- ----------------
Ajaxterm-0.10-8.el5                       dist-test             kojiadmin
Cluster_Administration-5.2-1.ns5.3.02     dist-test             kojiadmin
Deployment_Guide-5.2-11.ns5.3.02          dist-test             kojiadmin
......
(Total:1198 lines)

=============================================================

[eric@wenjia repos]$ koji list-external-repos --tag dist-test-build
Pri External repo name        URL
--- ------------------------- ----------------------------------------
[eric@wenjia repos]$

2010/3/17 Mike McLean <mikem@redhat.com>

On 03/17/2010 03:25 AM, Eric Zhong wrote:
> "koji regen-repo dist-test-build" command fails,
>
> kojid, kojira, httpd, postgresql are all running.
> selinux is disabled
>
> I debug the kojid and create_local_repo() not be exe, because pkglist is
> empty.
> i can't find who create this file, and when it be created.

I suspect that your tag has neither builds nor external repos. In such a
case creating a repo for it makes no sense.

To see if your tag has any builds, run:
% koji list-tagged --latest --inherit dist-test-build
To see if your tag has any external repos, run:
% koji list-external-repos --tag dist-test-build
--
buildsys mailing list
buildsys@lists.fedoraproject.org
https://admin.fedoraproject.org/mailman/listinfo/buildsys