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.
On some platforms (aarch64, ppc64le) toolchain limitations/optimizations
can break anaconda startup, as discussed in rhbz#1722181. The workaround
is to preload libgomp.so before starting anaconda.
This option will create an optionally compressed tarball containing a
disk image. This format is used by Google's Compute Engine.
This also adds a new option, tar_disk_name, to set the name of the disk
image that will be wrapped in the final tarball. opts.image_name
continues to be the final output file name.
In livemedia-creator's usage of this it can never pass in None, but if
someone were to import the library and use it, it would crash with
NoneType. So add the extra checks to make sure cancel_func isn't None,
just in case.
When using LMC to virt-install a system to an image, cancel_func is not
provided in run_creator, causing a TypeError (NoneType object is not
callable).
Signed-off-by: Yuval Turgeman <yturgema@redhat.com>
Anaconda can leave child processes and mounts around when it crashes or
is canceled before finishing. It also sometimes unmounts unrelated file
systems (https://github.com/rhinstaller/anaconda/issues/1791).
Run it in a mount and pid namespace to clean up after it.
After a novirt disk image install, we run `setfiles` in the
install root to ensure some SELinux contexts are correct. /dev
is currently excluded from this run. However, as reported and
discussed in https://bugzilla.redhat.com/show_bug.cgi?id=1663040
it seems that with a recent systemd change, startup of many
services will fail if /dev itself is incorrectly labelled, and
in current Rawhide live images, it *is* incorrectly labelled.
Including `/dev` in this setfiles command appears to resolve the
problem in my testing.
Resolves: rhbz#1663040
Signed-off-by: Adam Williamson <awilliam@redhat.com>
Drop running pkill. This causes problems if more than one is running on
a system (eg. in parallel using mock). It can kill off other processes
unrelated to this instance of anaconda.
This reverts commit 6b5c4df8b5.
It ends up that this isn't as easy as you'd think. Anaconda sets up some
signal handlers to handle cleanly exiting, but they are not being run
when sent a TERM after package installation has started. I think DNF
resets them causing it to get ignored.
When the cancel is sent it can take several minutes for it to have an
effect. In my testing it usually takes around 2 minutes for anaconda to
notice and exit.
This sends a TERM to the process and then waits for it to exit. When it
returns it then removed any device-mapper devices that were setup for
image installations, removes any hanging loop devices.
It then kills off any process with pyanaconda. in the cmdline, and
anaconda-bus.conf (because anaconda starts a bunch of helpers and if it
doesn't shut down cleanly they remain running).
Resolves: rhbz#1656691
In addition to monitoring the logs for errors, call a function (or
functions) that tell it to cancel the anaconda process and cleanup.
Also check for a cancel after creating the squashfs image for live-iso
since that's a long running process.
This required adding a new argument to a number of existing functions,
passing it down to QEMUInstall and novirt_install where the function is
called.
Resolves: rhbz#1656691
At the end of disk image installs, use fstrim on the generated filesystem to
discard any blocks that were allocated during the install and are now unused.
This will allow tools such as qemu-img to create images that do not include
deleted data.
For raw disk images that do not go through qemu-img, use fallocate --dig-holes
to create sparse holes in place of the unused blocks.
First is Anaconda uses 6k blocks per file for its estimate, and it
fudges by 10% so adjust for those with an extra 10% of headroom just in
case.
Second is an Anaconda bug that won't allow it to do a kickstart install
to a disk smaller than 3000 MB. There is a PR to fix it upstream, but
for now the minimum size has to be 3000e9
This moves everything except the cmdline checking into run_creator in
pylorax.creator
It also rearranges some functions to prevent import loops, and adds a
utility function to imgutils (mkfsimage_from_disk for copying a
partition into a filesystem image).
This reduces the amount of code in livemedia-creator to the cmdline
parsing and calling of the installer functions. Moving them into other
modules will allow them to be used by other projects, like the
lorax-composer API server.
