Hi there, Is there an update with this bug?
I am hitting it, or something very similar with 16.04 on EC2 with Xen EBS volumes. root@ip-10-124-125-119:~# cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=16.04 DISTRIB_CODENAME=xenial DISTRIB_DESCRIPTION="Ubuntu 16.04.1 LTS" root@ip-10-124-125-119:~# uname -a Linux ip-10-124-124-125 4.4.0-34-generic #53-Ubuntu SMP Wed Jul 27 16:06:39 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux root@ip-10-124-125-119:~# cat /sys/block/xvdc/queue/nr_requests 32 root@ip-10-124-125-119:~# echo 64 > /sys/block/xvdc/queue/nr_requests -bash: echo: write error: Invalid argument I am not able to even set a queue size of below 128 now. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1436319 Title: Unable to increase nr_requests & change I/O scheduler ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1436319/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs