device-mapper: reload ioctl on cache1 failed: Device or resource busy

When I run the below command while setting up dm-cache on my CentOS system, I receive the error: device-mapper: reload ioctl on cache1 failed: Device or resource busy Command failed Command is: dmsetup create 'cache1' --table '0 195309568 cache /dev/sdb /dev/sda 512 1 writethrough default 0' Does anyone have idea about this error or have faced this error while setting up dm-cache? My dmesg output is [1907480.058991] device-mapper: table: 253:3: cache: Error opening metadata device [1907480.058996] device-mapper: ioctl: error adding target to table