> ** mkfs failed with extra mkfs options added to "-m reflink=1,rmapbt=1 -i sparse=1,nrext64=1" by test 015 ** > ** attempting to mkfs using only test 015 options: -d size=268435456 -b size=4096 ** > mkfs.xfs: cannot open /dev/vdc: Device or resource busy > mkfs failed > > About half the xfstests fail this way (722 of 1387 tests) Thanks for the report. Can you please show me the kernel config and the xfstests config that was used for this?