Description of problem:
command: yum check-update   

tail:

 yummain.user_main(sys.argv[1:], exit_code=True)
  File "/usr/share/yum-cli/yummain.py", line 367, in user_main
    errcode = main(args)
  File "/usr/share/yum-cli/yummain.py", line 174, in main
    result, resultmsgs = base.doCommands()
  File "/usr/share/yum-cli/cli.py", line 572, in doCommands
    return self.yum_cli_commands[self.basecmd].doCommand(self, self.basecmd, self.extcmds)
  File "/usr/share/yum-cli/yumcommands.py", line 1624, in doCommand
    ypl = base.returnPkgLists(extcmds, repoid=repoid)
  File "/usr/share/yum-cli/cli.py", line 1382, in returnPkgLists
    ignore_case=True, repoid=repoid)
  File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 2953, in doPackageLists
    for (n,a,e,v,r) in self.up.getUpdatesList():
  File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 1101, in <lambda>
    up = property(fget=lambda self: self._getUpdates(),
  File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 846, in _getUpdates
    self._up = rpmUtils.updates.Updates(self.rpmdb.simplePkgList(), self.pkgSack.simplePkgList())
  File "/usr/lib/python2.7/site-packages/yum/rpmsack.py", line 512, in simplePkgList
    return self.pkglist
  File "/usr/lib/python2.7/site-packages/yum/rpmsack.py", line 269, in _get_pkglist
    csumpkgtups = self.preloadPackageChecksums(load_packages=False)
  File "/usr/lib/python2.7/site-packages/yum/rpmsack.py", line 1066, in preloadPackageChecksums
    rpmdbv = self.simpleVersion(main_only=True)[0]
  File "/usr/lib/python2.7/site-packages/yum/rpmsack.py", line 1225, in simpleVersion
    if 'checksum_type' in ydbi and 'checksum_data' in ydbi:
  File "/usr/lib/python2.7/site-packages/yum/rpmsack.py", line 1918, in __contains__
    x = self.get(attr)
  File "/usr/lib/python2.7/site-packages/yum/rpmsack.py", line 1948, in get
    res = self._read(attr)
  File "/usr/lib/python2.7/site-packages/yum/rpmsack.py", line 1863, in _read
    info = misc.stat_f(fn, ignore_EACCES=True)
  File "/usr/lib/python2.7/site-packages/yum/misc.py", line 960, in stat_f
    return os.stat(filename)
OSError: [Errno 5] Input/output error: '/var/lib/yum/yumdb/P/83ae9298a8da8b416207b09ca94a619304a6470c-Perlbal-1.80-9.fc20-noarch/checksum_type'

Version-Release number of selected component:
yum-3.4.3-148.fc20

Additional info:
reporter:       libreport-2.2.2
cmdline:        /usr/bin/python /usr/bin/yum check-update
executable:     /usr/bin/yum
kernel:         3.14.6-200.fc20.x86_64
runlevel:       N 5
type:           Python
uid:            1000

Truncated backtrace:
misc.py:960:stat_f:OSError: [Errno 5] Input/output error: '/var/lib/yum/yumdb/P/83ae9298a8da8b416207b09ca94a619304a6470c-Perlbal-1.80-9.fc20-noarch/checksum_type'

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 367, in user_main
    errcode = main(args)
  File "/usr/share/yum-cli/yummain.py", line 174, in main
    result, resultmsgs = base.doCommands()
  File "/usr/share/yum-cli/cli.py", line 572, in doCommands
    return self.yum_cli_commands[self.basecmd].doCommand(self, self.basecmd, self.extcmds)
  File "/usr/share/yum-cli/yumcommands.py", line 1624, in doCommand
    ypl = base.returnPkgLists(extcmds, repoid=repoid)
  File "/usr/share/yum-cli/cli.py", line 1382, in returnPkgLists
    ignore_case=True, repoid=repoid)
  File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 2953, in doPackageLists
    for (n,a,e,v,r) in self.up.getUpdatesList():
  File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 1101, in <lambda>
    up = property(fget=lambda self: self._getUpdates(),
  File "/usr/lib/python2.7/site-packages/yum/__init__.py", line 846, in _getUpdates
    self._up = rpmUtils.updates.Updates(self.rpmdb.simplePkgList(), self.pkgSack.simplePkgList())
  File "/usr/lib/python2.7/site-packages/yum/rpmsack.py", line 512, in simplePkgList
    return self.pkglist
  File "/usr/lib/python2.7/site-packages/yum/rpmsack.py", line 269, in _get_pkglist
    csumpkgtups = self.preloadPackageChecksums(load_packages=False)
  File "/usr/lib/python2.7/site-packages/yum/rpmsack.py", line 1066, in preloadPackageChecksums
    rpmdbv = self.simpleVersion(main_only=True)[0]
  File "/usr/lib/python2.7/site-packages/yum/rpmsack.py", line 1225, in simpleVersion
    if 'checksum_type' in ydbi and 'checksum_data' in ydbi:
  File "/usr/lib/python2.7/site-packages/yum/rpmsack.py", line 1918, in __contains__
    x = self.get(attr)
  File "/usr/lib/python2.7/site-packages/yum/rpmsack.py", line 1948, in get
    res = self._read(attr)
  File "/usr/lib/python2.7/site-packages/yum/rpmsack.py", line 1863, in _read
    info = misc.stat_f(fn, ignore_EACCES=True)
  File "/usr/lib/python2.7/site-packages/yum/misc.py", line 960, in stat_f
    return os.stat(filename)
OSError: [Errno 5] Input/output error: '/var/lib/yum/yumdb/P/83ae9298a8da8b416207b09ca94a619304a6470c-Perlbal-1.80-9.fc20-noarch/checksum_type'

Local variables in innermost frame:
ignore_EACCES: True
e: OSError(5, 'Input/output error')
filename: '/var/lib/yum/yumdb/P/83ae9298a8da8b416207b09ca94a619304a6470c-Perlbal-1.80-9.fc20-noarch/checksum_type'