When monitoring log output in livemedia-creator --no-virt it could get
stuck if the output from anaconda stops for some reason.
This changes execReadlines so that it will only read output when it is
available, will monitor the process state, and continue to call the
callback function.
It also adds a final timeout on proc.communicate() so that if Anaconda
becomes stuck and won't exit livemedia-creator will eventually exit.
When the no-virt callback terminates anaconda on an error it now sends a
TERM signal to all of the unshare process' children because just sending
it to unshare doesn't cause anaconda to exit.
(cherry picked from commit 6400515880)
startProgram is running in binary mode, so bufsize=1 is invalid. The
ExecLineReader class already breaks it up into lines using readline() so
there is no need to change the default buffering.
Remove `except` block which immediately raises the same exception again (it's
not a subclass of another caught exception, so this is safe).
Remove a false positive, because it is not emitted from the code base.
Disable subprocess-popen-preexec-fn in startProgram, which is not used
internally.
Some callers expect CalledProcessError.output to have the output, so
pass up the stdout + stderr output.
This means failed runcmd template commands will log to program.log and
lorax.log
Fix up 2to3 complaints. I've decided to do with wrapping list
comprehension inside list() to get the generators to run in several
places instead of list(map( or list(filter( which seem less readable to
me.
Previously if there was an error during a novirt installation that
didn't exit the process there was no way to detect it. This uses the new
--remotelog option for anaconda to monitor the logs for errors using the
same criteria as it does when monitoring a virt install. If there is an
error the anaconda process will be terminated and the logs will be
gathered up into ./anaconda/
Switch to using execWith* so that the command and its output can be
logged. To capture the output setup a logger named "program"
livemedia-creator captures all of this into program.log
The anaconda execWithRedirect and execWithCapture functions are too
useful not to include. They also allow you to log all the execuatable's
output to a logfile. Added them under executils.py module which uses
the pylorax and a new program logger.
Brian C. Lane
Lars Karlitski
David Shea