I am trying to use dm-ioband to control the per process IO bandwidth. I had some problems create the ioband device mapper on my disk. The following is the system info
OS: CentOS kernel 2.6.32.15
dm-ioand: v1.14.0
I followed the dm-ioand installation instructions to create ioband1:
echo "0 $(blockdev --getsize /dev/sdb) ioband /dev/sdb 1 0 0 none weight 0:100" | dmsetup create ioband1
There was an error: device-mapper: reload ioctl failed: Invalid argument
I umounted the partition first, still got the same error.
One thing I want to mention is that, /dev/sdb is a device from a iSCSI protocol from a storage server.
Does it matter?
I also tried to create ioband1 on local partitions, same error.
Any ideas?
Thanks in advance.
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