mkdir /var/tmp/mdadm-old ; zcat $target/$base | ( cd /var/tmp/mdadm-old ; tar xf - )
mkdir /var/tmp/mdadm-new ; zcat /var/tmp/mdadm-new.tgz | ( cd /var/tmp/mdadm-new ; tar xf - )
diff -ru /var/tmp/mdadm-old /var/tmp/mdadm-new
mkdir /var/tmp/mdadm-old ; zcat $target/$base | ( cd /var/tmp/mdadm-old ; tar xf - )
mkdir /var/tmp/mdadm-new ; zcat /var/tmp/mdadm-new.tgz | ( cd /var/tmp/mdadm-new ; tar xf - )
diff -ru /var/tmp/mdadm-old /var/tmp/mdadm-new