** Also affects: linux (Ubuntu Xenial)
Importance: Medium
Assignee: Canonical Kernel Team (canonical-kernel-team)
Status: Triaged
** Changed in: linux (Ubuntu Xenial)
Status: Triaged => Fix Committed
** Changed in: linux (Ubuntu Xenial)
Assignee: Canonical Kernel Team (canonical-kernel-team) => Tim Gardner
(timg-tpi)
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https://bugs.launchpad.net/bugs/1560514
Title:
Predictable naming mechanism is leading to issues in DLPAR operations
of NICs
Status in linux package in Ubuntu:
Fix Committed
Status in linux source package in Xenial:
Fix Committed
Bug description:
Recent kernels are using predictable naming for network interfaces, so
the network stack is more tied to PCI naming. This can be a problem in
hotplug scenarios, because PCI addresses will change if devices are
removed and then re-added. This situation seems unusual, but it can
happen if a user wants to replace a NIC without rebooting the machine,
for example.
The patch attached here should deal with this situation, since it makes
PHB/domain number fixed based on device-tree properties.
The problem can be reproduced by removing and re-adding a PCI network
adapter, so its address will change and, per predictable naming scheme, so is
the interface name.
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