Commits on Oct 20, 2020

1. core: fix unnecessary fallback to the rescue mode caused by initrd-sw… …

   …itch-root.service's exit status judgment error
   
   commit 1f0958f ("core: when determining whether a process exit
   status is clean, consider whether it is a command or a daemon")
   introduces a side effect that causes system falls into rescure mode
   due initrd-switch-root.service entered failed state, detailed
   information should refer to the redhat's doc, as follows:
   https://access.redhat.com/solutions/4973191
   https://bugzilla.redhat.com/show_bug.cgi?id=1414904
   
   As we know that in the cloud computing scenarios, some very critical
   services may run on the server, and the server may run continuously for
   several years without restarting.The initramfske may still maintain the
   original state many years ago without any changes. In addition, this
   server may have been installed a lot of user mode programs and kernel
   mode drivers due to various operations and maintenance over the years.
   
   If the initramfs is regenerated because of upgrading systemd, the user-mode
   programs or drivers previously installed may be inserted into the initramfs,
   introducing unknown risks, and may even cause the system to fail to start.
   So we hope that this patch may avoid the above issues.
   
   (cherry picked from commit ec8955e)
   (cherry picked from commit aa4bc7e)
   Resolves: #1889315

   

   w-simon authored and Jan Synacek committed Oct 20, 2020
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