LinuxQuestions.org - dm-ioband : limiting bandwidth for specifics jobs

Hello everybody,

This is my situation:
--I'm working with only one partiton so i made:

Code:

echo "0 $(blockdev --getsize /dev/sda3) ioband /dev/sda3 1 0 0 none weight 0 :100" | dmsetup create ioband1

mkfs.ext3 /dev/mapper/ioband1

mount /dev/mapper/ioband1 /mnt

2) Now I have two job to assign on the same partition:

---job_1: I want to assign to this job the 80% of bandwidth
---job_2: have the 20% of BW.

I've tried to get the PID of both the job and made:

Code:



arg="--size=30m --rw=randrw --numjobs=2 --group_reporting "



./fio $arg --name=$! --directory=/mnt --output=io1.log & 



pid_1=$!

dmsetup message ioband1 0 type user

dmsetup message ioband1 0 attach $pid_1

dmsetup message ioband1 0 weight $pid_1:80

echo $pid_1



./fio $arg --name=$! --directory=/mnt --output=io2.log &



pid_2=$!

dmsetup message ioband1 0 attach $pid_2

dmsetup message ioband1 0 weight $pid_2:20

echo $pid_2



wait

But I think that somethings doesn't work as I wish...
Anyone can help me please??

Thank you...