** Changed in: systemd (Ubuntu)
Status: Confirmed => Fix Committed
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https://bugs.launchpad.net/bugs/1623003
Title:
udev-generated /dev/disk/by-path names broken for virtio disks
Status in systemd:
Unknown
Status in Ubuntu on IBM z Systems:
Confirmed
Status in systemd package in Ubuntu:
Fix Committed
Bug description:
The udev-generated /dev/disk/by-path names for virtio disks are broken on z
Systems as they have the format virtio-pci-h.h.hhhh[-partn], where h.h.hhhh is
the CCW devno of the virtio device representing the whole disk. Historically,
the standard CCW naming was applied, which was ccw-h.h.hhhh[-partn]
---uname output---
Linux ubuntu 4.4.0-36-generic #55-Ubuntu SMP Thu Aug 11 18:05:09 UTC 2016
s390x s390x s390x GNU/Linux
Machine Type = 2964-703 running KVM for IBM z Systems
---Debugger---
A debugger is not configured
---Steps to Reproduce---
1. Install Ubuntu LTS 16.04.1 on KVM for IBM z Systems 1.1.1
2. Issue ls -l /dev/disk/by-path
Userspace tool common name: udev
The userspace tool has the following bit modes: 64-bit
Userspace rpm: udev
Userspace tool obtained from project website: na
There are basically two problems with this:
1. The naming is technically incorrect, since the virtio devices on z are no
PCI devices but CCW devices
2. Then naming based on virtio- is backwards incompatible. This may seem not
to be an issue for Xenial but customers may be confused if they have been
running Linux on KVM for IBM z before.
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