no error handling in Yum any more?

Tom Hughes tom at
Mon Dec 22 17:20:01 UTC 2014

On 22/12/14 17:07, Jan Kratochvil wrote:
> On Mon, 22 Dec 2014 05:59:50 +0100, Felix Miata wrote:
>> I started a yum upgrade process. When it reached 342/784 (@avahi) over half
>> an hour ago, the screen writing from the process simply halted.
> During F20->F21 upgrade I had to run along something like
> 	while sleep 1;do killall systemctl;done
> (the real command was longer) as many %post scripts tried to restart their
> daemon but during the upgrade each systemctl command was timing out with very
> long delay.

I had that as well - the cause is that systemd asserts and goes into 
panic mode which means it no longer responds to systemctl calls. It 
didn't happen to all my machines but it did to a couple of them.

The fix is to kill the dbus-daemon process - after that the systemctl 
calls will still fail but will do so quickly rather than slowly.

You will also won't be able to do a clean reboot so will have to resort 
to something like "sync; reboot -ff" to reboot after it completes.


Tom Hughes (tom at

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