예를들어

/dev/sda1 과 /dev/sda2 에 대한 blktrace를 두개의 터미널에서 실행시키면

BLKTRACESETUP(2) /dev/sdc4 failed: 16/Device or resource busy

Thread 2 failed open /sys/kernel/debug/block/(null)/trace2: 2/No such file or directory

Thread 3 failed open /sys/kernel/debug/block/(null)/trace3: 2/No such file or directory

Thread 0 failed open /sys/kernel/debug/block/(null)/trace0: 2/No such file or directory

Thread 1 failed open /sys/kernel/debug/block/(null)/trace1: 2/No such file or directory

FAILED to start thread on CPU 0: 1/Operation not permitted

FAILED to start thread on CPU 1: 1/Operation not permitted

FAILED to start thread on CPU 2: 1/Operation not permitted

FAILED to start thread on CPU 3: 1/Operation not permitted

이런식의 에러가 나는데요 ㅠㅠ

같은 디바이스이지만 파티션되어있는 sda1 sda2 sda3 .. 에서 동시에 실행하거나, 혹은 구분할 수 있는 방법이 없을까요 8ㅅ8)