Comment 0 for bug 1790788

Trying to use crashdump especially in a KVM machine.
Installation looks fine and the reboot is triggered.
But it does not work because the kernel does not have a 'crashkernel=' parameter.
Nothing in /proc/cmdline:
$ cat /proc/cmdline
root=LABEL=cloudimg-rootfs

Issue seems to be in adding the crashkernel line in this snippet:
# Customize crashkernel= value according to architecture
ARCH="$(arch)"
DEF_PRESET="384M-:128M"
case "$ARCH" in
   s390x)
      HAS_CRASHKERNEL="$(grep crashkernel /etc/zipl.conf)" || true
      if test -z "$HAS_CRASHKERNEL"; then
         sed -i "/parameters/{s|\"$| crashkernel=${DEF_PRESET}\"|}" /etc/zipl.conf
         zipl
      fi
         CIO_IGNORE="$(cio_ignore -u -k)"
         sed -i "s/\#KDUMP_CMDLINE_APPEND/KDUMP_CMDLINE_APPEND/" $INITCONFFILE
         sed -i "/KDUMP_CMDLINE_APPEND/{s|\"$| ${CIO_IGNORE}\"|}" $INITCONFFILE
    ;;
esac

(especially 1st sed stmt)