hwinfo --disk output shows that disk is not attached to any nvme pci controller.
The offending drives set the CMIC value to non-zero, causing it to be recognized as a multipath device.
Solution
When nvme_core.multipath=1 the device link in the SysFS's namespace entry points to nvme-subsys# and that causes some missing information, specificaly about PCI and namespace's parent device.
Here we go through the parent device withihn the nvme-subsys to gather complete information, and making the output's ompatible to the previously seen.
Problem
hwinfo --diskoutput shows that disk is not attached to any nvme pci controller.The offending drives set the CMIC value to non-zero, causing it to be recognized as a multipath device.
Solution
When
nvme_core.multipath=1the device link in the SysFS's namespace entry points to nvme-subsys# and that causes some missing information, specificaly about PCI and namespace's parent device.Here we go through the parent device withihn the nvme-subsys to gather complete information, and making the output's ompatible to the previously seen.
Signed-off-by: Mauro S. M. Rodrigues maurosr@linux.vnet.ibm.com