Comment # 27 on bug 1060551 from Martin Wilck

(In reply to Andrei Borzenkov from comment #21)

> Who am I to argue with SUSE?
> 
> * Fri Aug 11 2017 mwilck@suse.com
> - Dropped 67-kpartx-compat.rules (SUSE legacy).
>   * symlinks "/dev/mapper/${UUID}_part${X}" are not created any more,
>     only     "/dev/mapper/${UUID}-part${X}" (with "minus")
> - Dropped automatic kpartx invocation on dmraid devices (fate#323743)

Background: Official dmraid support has been dropped for SLE-15 (fate#323743).
In the wake of that, we also dropped the automatic creation of partition device
nodes on top of dmraid devices. AFAIK, SUSE had been the only major
distribution that would call kpartx for dmraid devices automatically.

That should only be a problem for fake RAID systems that don't work with MD
(IOW, fake RAID that uses neither DDF nor Intel Matrix meta data format).

If someone wants to reinstate the kpartx-on-dmraid behavior, simply add the old
rule again:

cat >/etc/udev/rules.d/66-kpartx-dmraid.rules <<\EOF
KERNEL!="dm-*", GOTO="kpartx_end"
ACTION!="add|change", GOTO="kpartx_end"

ENV{DM_STATE}!="SUSPENDED", ENV{DM_UUID}=="DMRAID-*|dmraid-*", \
        RUN+="/sbin/kpartx -u -p -part /dev/$name"

LABEL="kpartx_end"
EOF