Upgrade attempt hosed yum

[Amy Kelly]

I was trying the pregrade install of F11 from F10 on my test box and
somewhere along the line, yum managed to hose itself completely.
Googling what seemed to me to be the most likely error got something
from FC6 that didn't quite work to fix this problem, I'm curious if
anyone else had this issue?

[root at toshiko ~]# yum clean all
Loaded plugins: refresh-packagekit
rpmdb: PANIC: fatal region error detected; run recovery
error: db4 error(-30975) from dbenv->open: DB_RUNRECOVERY: Fatal
error, run database recovery
error: cannot open Packages index using db3 -  (-30975)
error: cannot open Packages database in /var/lib/rpm
Traceback (most recent call last):
  File "/usr/bin/yum", line 29, in <module>
    yummain.user_main(sys.argv[1:], exit_code=True)
  File "/usr/share/yum-cli/yummain.py", line 229, in user_main
    errcode = main(args)
  File "/usr/share/yum-cli/yummain.py", line 84, in main
    base.getOptionsConfig(args)
  File "/usr/share/yum-cli/cli.py", line 184, in getOptionsConfig
    enabled_plugins=self.optparser._splitArg(opts.enableplugins))
  File "/usr/lib/python2.5/site-packages/yum/__init__.py", line 192,
in _getConfig
    self._conf = config.readMainConfig(startupconf)
  File "/usr/lib/python2.5/site-packages/yum/config.py", line 774, in
readMainConfig
    yumvars['releasever'] = _getsysver(startupconf.installroot,
startupconf.distroverpkg)
  File "/usr/lib/python2.5/site-packages/yum/config.py", line 844, in _getsysver
    idx = ts.dbMatch('provides', distroverpkg)
TypeError: rpmdb open failed


-- 
Amy Kelly // engagedtone at gmail.com