yum has lost it, rpms db is now corrupted.

[Jim Cromie <jim.cromie@xxxxxxxxx>]

a recent large update has gone badly wrong,
(the screen went into graphics mode, fixed by 'reset' cmd)
and now I get this on a re-invoke sanity test.


[jimc@harpo ~]$ sudo yum shell
Password:
Loading "installonlyn" plugin
rpmdb: PANIC: fatal region error detected; run recovery
error: db4 error(-30977) from dbenv->open: DB_RUNRECOVERY: Fatal error, 
run database recovery
error: cannot open Packages index using db3 -  (-30977)
error: cannot open Packages database in /var/lib/rpm
Traceback (most recent call last):
 File "/usr/bin/yum", line 29, in ?
   yummain.main(sys.argv[1:])
 File "/usr/share/yum-cli/yummain.py", line 85, in main
   base.getOptionsConfig(args)
 File "/usr/share/yum-cli/cli.py", line 199, in getOptionsConfig
   errorlevel=opts.errorlevel)
 File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 125, in 
doConfigSetup
   self.conf = config.readMainConfig(startupconf)
 File "/usr/lib/python2.4/site-packages/yum/config.py", line 597, in 
readMainConfig
   yumvars['releasever'] = _getsysver(startupconf.installroot, 
startupconf.distroverpkg)
 File "/usr/lib/python2.4/site-packages/yum/config.py", line 656, in 
_getsysver
   idx = ts.dbMatch('provides', distroverpkg)
TypeError: rpmdb open failed
[jimc@harpo ~]$ man rpm

rebuilding the db didnt help..

[jimc@harpo ~]$ sudo rpm --rebuilddb
rpmdb: PANIC: fatal region error detected; run recovery
error: db4 error(-30977) from dbenv->open: DB_RUNRECOVERY: Fatal error, 
run database recovery
error: cannot open Packages index using db3 -  (-30977)
[jimc@harpo ~]$

using --initdb didnt work either.

Oddly, basic rpm querying works..

[jimc@harpo ~]$ rpm -q yum
yum-3.0.1-2.fc6


Any suggestions ?