[systemd-devel] [PATCH 2/2] udev/path_id: improve and enhance bus detection for Linux on z Systems

[Lennart Poettering]

On Wed, 23.09.15 13:42, Hendrik Brueckner (brueckner at linux.vnet.ibm.com) wrote:

> From: Liu Yuan Yuan <bjyyliu at linux.vnet.ibm.com>
> 
> Improve and enhance the path_id udev builtin to correctly handle bus'
> available on Linux on z Systems (s390).
> 
> Previously, the CCW bus and, in particular, any FCP devices on it, have
> been treated separately.  This commit integrates the CCW bus into the
> device chain loop.  FCP devices and their associated SCSI disks are now
> handled through the common SCSI handling functions in path_id.
> 
> This implies also a change in the naming of the symbolic links created
> by udev.  So any backports of this commit to existing Linux distribution
> must be done with care.  If a backport is requires, a udev rule can be
> created to create the "old-style" symbolic links too.
> 
> Apart from the CCW bus, this commit adds bus support for the:
> 
> - ccwgroup bus which manages network devices, and
> - ap bus which manages cryptographic adapters
> - iucv bus which manages IUCV devices on z/VM
> 
> Signed-off-by: Liu Yuan Yuan <bjyyliu at linux.vnet.ibm.com>
> Signed-off-by: Hendrik Brueckner <brueckner at linux.vnet.ibm.com>

We do not use S-o-b in systemd, that's a kernel thing.

Please submit this via a github PR, thanks!

Lennart

-- 
Lennart Poettering, Red Hat