mainframe · December 6, 2016 13:28
diff --git a/ceph-udev-disk-scheduler.rules b/ceph-udev-disk-scheduler.rules
 # udev rule to set disk schedulers for Ceph
 # For spinning disks we want the CFQ scheduler so that we can set
 # priorities on client and recovery I/O threads
 #
 # Author: Wido den Hollander <[email protected]>
 # Date: July 2015

 # Use deadline for SSDs
 ACTION=="add|change", KERNEL=="sd[a-z]*", ATTR{queue/rotational}=="0", ATTR{queue/scheduler}="deadline"

 # Use CFQ for HDDs
 ACTION=="add|change", KERNEL=="sd[a-z]*", ATTR{queue/rotational}=="1", ATTR{queue/scheduler}="cfq"
	# udev rule to set disk schedulers for Ceph
	# For spinning disks we want the CFQ scheduler so that we can set
	# priorities on client and recovery I/O threads
	#
	# Author: Wido den Hollander <[email protected]>
	# Date: July 2015

	# Use deadline for SSDs
	ACTION=="add\|change", KERNEL=="sd[a-z]*", ATTR{queue/rotational}=="0", ATTR{queue/scheduler}="deadline"

	# Use CFQ for HDDs
	ACTION=="add\|change", KERNEL=="sd[a-z]*", ATTR{queue/rotational}=="1", ATTR{queue/scheduler}="cfq"