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| author | Michal Sekletar <msekleta@redhat.com> | 2016-02-09 09:57:45 +0100 |
|---|---|---|
| committer | Michal Sekletar <msekleta@redhat.com> | 2016-02-09 12:25:42 +0100 |
| commit | f073b1b3c0f4f0df1b0bd61042ce85fb5d27d407 (patch) | |
| tree | 0a849ee98e45e1c3ec8328d3636b3600f02fbdb9 /docs | |
| parent | 70b65964d7ef03621f5d4abd23150c1b121989b4 (diff) | |
path_id: reintroduce by-path links for virtio block devices
Enumeration of virtio buses is global and hence
non-deterministic. However, we are guaranteed there is never going to be
more than one virtio bus per parent PCI device. While populating
ID_PATH we simply skip virtio part of the syspath and we extend the path
using the sysname of the parent PCI device.
With this patch udev creates following by-path links for virtio-blk
device /dev/vda which contains two partitions.
ls -l /dev/disk/by-path/
total 0
lrwxrwxrwx 1 root root 9 Feb 9 10:47 virtio-pci-0000:00:05.0 -> ../../vda
lrwxrwxrwx 1 root root 10 Feb 9 10:47 virtio-pci-0000:00:05.0-part1 -> ../../vda1
lrwxrwxrwx 1 root root 10 Feb 9 10:47 virtio-pci-0000:00:05.0-part2 -> ../../vda2
See:
http://lists.linuxfoundation.org/pipermail/virtualization/2015-August/030328.html
Fixes #2501
Diffstat (limited to 'docs')
0 files changed, 0 insertions, 0 deletions