[LU-16947] Make multiop_bg_pause send the kill signal to the correct pid

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.16.0
• Severity: 3
• Assignee: Arshad Hussain
• Reporter: Arshad Hussain

Description

multiop_bg_pause under test-framework starts multiop in background and waits for signal if "_" option is provided. On 'verbose' mode the PAUSING string is printed on console which is checked and if not found error is reported by multiop_bg_pause function.

On error, it is required to kill the existing running multiop binary as if not done will eventually timeout and not exit the test. Currently on error multiop_bg_pause function incorrectly sends singlal to wrong PID.