Right, the kernel name is dm-0 in sysfs, and so your udev decides to
create /dev/dm-0. Either configure udev not to do that, or ignore
/dev/dm-0 and use the name in /dev/mapper.
James Olson wrote:
After looking around I think that /dev/dm-0 shows up due to the kernel block devices in the /sys filesystem showing up. I see a /sys/block/dm-0, dm-1, etc. Perhaps the kernel assumes that any device mapper device is another block device, not sure.
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