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Increase readahead on virtio block devices
author
Tom Hughes
<tom@compton.nu>
Fri, 31 May 2019 18:36:38 +0000
(19:36 +0100)
committer
Tom Hughes
<tom@compton.nu>
Fri, 31 May 2019 18:36:38 +0000
(19:36 +0100)
cookbooks/devices/templates/default/udev.rules.erb
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diff --git
a/cookbooks/devices/templates/default/udev.rules.erb
b/cookbooks/devices/templates/default/udev.rules.erb
index
9c70340
..
bc6f67e
100644
(file)
--- 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"