Bug 741722 - better chroot support
better chroot support
Product: Fedora
Classification: Fedora
Component: lorax (Show other bugs)
Unspecified Unspecified
unspecified Severity high
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Assigned To: Martin Gracik
Fedora Extras Quality Assurance
Depends On:
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Reported: 2011-09-27 14:24 EDT by Daniel Mach
Modified: 2013-07-04 08:59 EDT (History)
3 users (show)

See Also:
Fixed In Version: lorax-16.4.6-1.fc16
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2011-10-13 00:33:00 EDT
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RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Daniel Mach 2011-09-27 14:24:18 EDT
I ran lorax (as part of pungi) in mock chroot.

It failed with:
Traceback (most recent call last):
  File "/usr/bin/pungi", line 222, in <module>
  File "/usr/bin/pungi", line 124, in main
  File "/usr/lib/python2.7/site-packages/pypungi/__init__.py", line 845, in doBuildinstall
    workdir=workdir, outputdir=outputdir)
  File "/usr/lib/python2.7/site-packages/pylorax/__init__.py", line 438, in run
    self.installtree.yum.remove(package, pattern_list)
  File "/usr/lib/python2.7/site-packages/pylorax/yumhelper.py", line 120, in remove
  File "/usr/lib64/python2.7/shutil.py", line 244, in rmtree
    rmtree(fullname, ignore_errors, onerror)
  File "/usr/lib64/python2.7/shutil.py", line 253, in rmtree
    onerror(os.rmdir, path, sys.exc_info())
  File "/usr/lib64/python2.7/shutil.py", line 251, in rmtree
OSError: [Errno 39] Directory not empty: '.../work/x86_64/yumroot//var/lib/yum/history'

This is probably due to using a NFS storage.

Lorax also needs /proc mounted (since /etc/mtab is a symlink to /proc/mounts).

Touching /proc/mounts is not enough, because /proc is also needed when creating images (efiboot, I think):
/proc/devices: fopen failed: No such file or directory
Failure to communicate with kernel device-mapper driver.
Check that device-mapper is available in the kernel.
Command failed
unable to create efidisk image

if /proc is not mounted, it ends with various crashes and lorax should check whether /proc is mounted as soon as possible.

Proposed fixes:
 $ vim /usr/lib/python2.7/site-packages/pylorax/yumhelper.py +120
 add: ignore_errors=True to rmtree()
 (that's what mgracik proposed, seems to be working)

2) check if /proc is mounted when starting lorax
Comment 1 Fedora Update System 2011-10-03 10:03:42 EDT
lorax-16.4.5-1.fc16 has been submitted as an update for Fedora 16.
Comment 2 Fedora Update System 2011-10-03 13:44:20 EDT
Package lorax-16.4.5-1.fc16:
* should fix your issue,
* was pushed to the Fedora 16 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing lorax-16.4.5-1.fc16'
as soon as you are able to.
Please go to the following url:
then log in and leave karma (feedback).
Comment 3 Fedora Update System 2011-10-11 13:54:10 EDT
lorax-16.4.6-1.fc16 has been submitted as an update for Fedora 16.
Comment 4 Fedora Update System 2011-10-13 00:33:00 EDT
lorax-16.4.6-1.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.

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