Bug 621100

Summary: Failed to install in anaconda
Product: [Fedora] Fedora Reporter: MingtaoNiu <mniu>
Component: anacondaAssignee: Brian Lane <bcl>
Status: CLOSED DUPLICATE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: 14CC: dmalcolm, ivazqueznet, james.antill, jonathan, jonathansteffan, rhe, vanmeeuwen+fedora
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Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2010-08-06 17:06:28 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description MingtaoNiu 2010-08-04 09:20:21 UTC 
Description of problem:
In stage 2 of anaconda, encountered an exception with errors about python 2.7 

Version-Release number of selected component (if applicable):
anaconda 14.14
F14-alpha-tc2

How reproducible:
100%

Steps to Reproduce:
1.Boot the system with DVD.iso
  
Actual results:
<report xmlns="http://www.redhat.com/gss/strata"><binding name="localhash">dd5d9121b3d09d62c51159d6dde2a7400f97d3cefe16fbc6f506624182844a89</binding><binding name="product" /><binding name="description">The following was filed automatically by anaconda:
anaconda 14.14 exception report
Traceback (most recent call first):
  File "/usr/lib/python2.7/site-packages/pyanaconda/upgrade.py", line 86, in findRootParts
    oldInstalls += " on ".join(info)
  File "/usr/lib/python2.7/site-packages/pyanaconda/dispatch.py", line 212, in moveStep
    rc = stepFunc(self.anaconda)
  File "/usr/lib/python2.7/site-packages/pyanaconda/dispatch.py", line 131, in gotoNext
    self.moveStep()
  File "/usr/lib/python2.7/site-packages/pyanaconda/gui.py", line 1262, in setScreen
    self.anaconda.dispatch.gotoNext()
  File "/usr/lib/python2.7/site-packages/pyanaconda/gui.py", line 1175, in nextClicked
    self.setScreen ()
TypeError: sequence item 0: expected string, NoneType found
</binding><binding fileName="/tmp/anaconda-tb-CkSL0m" name="pythonUnhandledException" type="text">anaconda 14.14 exception report
Traceback (most recent call first):
  File "/usr/lib/python2.7/site-packages/pyanaconda/upgrade.py", line 86, in findRootParts
    oldInstalls += " on ".join(info)
  File "/usr/lib/python2.7/site-packages/pyanaconda/dispatch.py", line 212, in moveStep
    rc = stepFunc(self.anaconda)
  File "/usr/lib/python2.7/site-packages/pyanaconda/dispatch.py", line 131, in gotoNext
    self.moveStep()
  File "/usr/lib/python2.7/site-packages/pyanaconda/gui.py", line 1262, in setScreen
    self.anaconda.dispatch.gotoNext()
  File "/usr/lib/python2.7/site-packages/pyanaconda/gui.py", line 1175, in nextClicked
    self.setScreen ()
TypeError: sequence item 0: expected string, NoneType found

Local variables in innermost frame:
info: (None, None, 'VolGroup-lv_root')
oldInstalls:
anaconda: &lt;pyanaconda.Anaconda object at 0xb70f650c&gt;
notUpgradable: [(None, None, 'VolGroup-lv_root')]


Expected results:
   1.  Graphical boot menu(isolinux or syslinux) is displayed for users to select install options. If no option is selected, the installer should load after a reasonable timeout
   2. Anaconda boots successfully from the DVD
   3. Anaconda transitions to stage2 without error 

Additional info:
Comment 1 Dave Malcolm 2010-08-04 20:04:42 UTC 
Thanks for filing this bug report.

I'm not familiar with the Anaconda code, but this appears to be happening in error handling: it is preparing this error message:
 "Your current installation cannot be upgraded. This "
 "is likely due to it being too old. Only the previous two "
 "release may be upgraded. To upgrade older releases "
 "you must first upgrade through all intermediate releases."

trying to list the older installs that aren't possible.

This looks like an anaconda bug; reassigning.

The exception:
  TypeError: sequence item 0: expected string, NoneType found
is from the join invocation in
    oldInstalls += " on ".join(info)
  File "/usr/lib/python2.7/site-packages/pyanaconda/upgrade.py", line 86, in
findRootParts

All elements of the input iterable must be strings or unicode, but the 0th element of info is None.

notUpgradeable seems to be initialized in storage/__init__.py, findExistingRootDevices, using getReleaseString (by opening /etc/redhat-release), and if that file can't be opened, relName and relVer will both be None; I believe this will trigger the exception you're seeing.

So I believe you'll see this if you have a pre-existing install that has a /etc/fstab but doesn't have a /etc/redhat-release.
Comment 2 Dave Malcolm 2010-08-04 20:09:25 UTC 
(I'm fairly sure that "".join didn't change behavior here between python 2.6 and 2.7, fwiw)
Comment 3 Chris Lumens 2010-08-04 20:14:33 UTC 
Please attach the complete exception report, preferably in a non-xml format, so we have more context on this error.  Also what OS do you have installed currently, and is there a /etc/fedora-release file?  If so, what are its contents?
Comment 4 He Rui 2010-08-05 06:11:36 UTC 
Created attachment 436760 [details]
Exception Log

Reproduced it in both i386 and x86_64 system after it examined the storage devices. Exception Log attached. And there's no /etc/fedora-release file in the system.
Comment 5 Chris Lumens 2010-08-05 13:24:13 UTC 
How did you end up in a situation where there's no /etc/fedora-release?
Comment 6 He Rui 2010-08-06 08:03:05 UTC 
*** Bug 621817 has been marked as a duplicate of this bug. ***
Comment 7 He Rui 2010-08-06 08:06:35 UTC 
(In reply to comment #5)
> How did you end up in a situation where there's no /etc/fedora-release?    

? What does that mean? I turned to console tty2 and found no /etc/fedora-release existed.
Comment 8 Chris Lumens 2010-08-06 13:30:50 UTC 
I meant on some previously (possibly corrupted) installed system.  I should have made that clear.  But we know what the problem is and Brian is already looking into it.  I'll reassign this to him so he can mark as a duplicate.
Comment 9 Brian Lane 2010-08-06 17:06:28 UTC 

*** This bug has been marked as a duplicate of bug 621685 ***