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authorMichal Sekletar <msekleta@redhat.com>2016-02-09 09:57:45 +0100
committerMichal Sekletar <msekleta@redhat.com>2016-02-09 12:25:42 +0100
commitf073b1b3c0f4f0df1b0bd61042ce85fb5d27d407 (patch)
tree0a849ee98e45e1c3ec8328d3636b3600f02fbdb9 /units/systemd-journal-gatewayd.service.in
parent70b65964d7ef03621f5d4abd23150c1b121989b4 (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
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