(In reply to zhen ren from comment #1) > percent.sh: > > somehow dm-snapshot module is not loaded. > === > [ 0:00] #percent.sh:24+ lvcreate -s -n snap @PREFIX@vg/foo -l 3 -c 4k > [ 0:00] snapshot: Required device-mapper target(s) not detected in your > kernel. > [ 0:00] Run `lvcreate --help' for more information. > === > > After manually loading these kernel module, this testcase is skipped. With the same lvm tool version, fedora26 has not this problem.