From f1fd88c6c91dc9119d630bd48eb02c90ebb41e09 Mon Sep 17 00:00:00 2001 From: Tom Hughes Date: Fri, 31 May 2019 19:36:38 +0100 Subject: [PATCH 1/1] Increase readahead on virtio block devices --- cookbooks/devices/templates/default/udev.rules.erb | 3 +++ 1 file changed, 3 insertions(+) diff --git a/cookbooks/devices/templates/default/udev.rules.erb b/cookbooks/devices/templates/default/udev.rules.erb index 9c703409d..bc6f67eb4 100644 --- a/cookbooks/devices/templates/default/udev.rules.erb +++ b/cookbooks/devices/templates/default/udev.rules.erb @@ -55,3 +55,6 @@ ACTION=="add", SUBSYSTEM=="block", ENV{DEVTYPE}=="disk", ENV{ID_BUS}=="ata", ENV # Enable request merging for NVME devices ACTION=="add", SUBSYSTEM=="block", DRIVERS=="nvme", ATTR{queue/nomerges}="1" + +# Increase readahead on virtio block devices +ACTION=="add", SUBSYSTEM=="block", DRIVERS=="virtio_blk", ATTR{queue/read_ahead_kb}="512" -- 2.43.2