openstack/openstack-ansible-ops
Code Issues Proposed changes

MNAIO: Use discard option for all mount points

Browse Source 
Using the discard option for all mount points ensures
that the deletes actually release the blocks on the disk.
This ensures that SSD performance is optimised and that
file-backed images are kept as small as possible.

Change-Id: I648cbaca56d75e355cf6c8af01e2e3ad20dfc398
This commit is contained in:
Jesse Pretorius 2018-08-23 14:59:06 +01:00
parent f3575be76a
commit 42189e272f
3 changed files with 20 additions and 6 deletions
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2
multi-node-aio/playbooks/deploy-vms.yml
View File

@ -315,6 +315,7 @@
src: /dev/mapper/vmvg00-machines00
state: mounted
fstype: btrfs
opts: defaults,discard
- name: Setup cinder host volume
@ -381,6 +382,7 @@
src: "/dev/mapper/vmvg00-{{ item }}"
fstype: xfs
state: mounted
opts: defaults,discard
with_items:
- disk1
- disk2

12
multi-node-aio/playbooks/pxe/configs/debian/vm.config.j2
View File

@ -107,6 +107,8 @@ d-i partman-auto/expert_recipe string \
use_filesystem{ } filesystem{ ext2 } \
label{ boot } \
mountpoint{ /boot } \
options/defaults{ defaults } \
options/discard{ discard } \
. \
1024 1 100% ext4 \
$primary{ } \
@ -126,6 +128,8 @@ d-i partman-auto/expert_recipe string \
use_filesystem{ } filesystem{ ext4 } \
label{ root } \
mountpoint{ / } \
options/defaults{ defaults } \
options/discard{ discard } \
. \
16384 1 16384 ext4 \
$lvmok{ } in_vg{ vmvg00 } \
@ -134,6 +138,8 @@ d-i partman-auto/expert_recipe string \
use_filesystem{ } filesystem{ ext4 } \
label{ openstack } \
mountpoint{ /openstack } \
options/defaults{ defaults } \
options/discard{ discard } \
. \
{% if default_container_tech == 'nspawn' %}
8192 1 24576 btrfs \
@ -143,6 +149,8 @@ d-i partman-auto/expert_recipe string \
use_filesystem{ } filesystem{ btrfs } \
label{ machines } \
mountpoint{ /var/lib/machines } \
options/defaults{ defaults } \
options/discard{ discard } \
. \
{% elif default_container_tech == 'lxc' %}
4096 1 8192 btrfs \
@ -152,6 +160,8 @@ d-i partman-auto/expert_recipe string \
use_filesystem{ } filesystem{ btrfs } \
label{ machines } \
mountpoint{ /var/lib/machines } \
options/defaults{ defaults } \
options/discard{ discard } \
. \
8192 1 10240000 ext4 \
$lvmok{ } in_vg{ vmvg00 } \
@ -160,6 +170,8 @@ d-i partman-auto/expert_recipe string \
use_filesystem{ } filesystem{ ext4 } \
label{ lxc } \
mountpoint{ /var/lib/lxc } \
options/defaults{ defaults } \
options/discard{ discard } \
. \
{% endif %}

12
multi-node-aio/playbooks/pxe/configs/redhat/vm.config.j2
View File

@ -18,14 +18,14 @@ clearpart --all --initlabel
part /boot --fstype ext3 --size=512
part pv.01 --size=1 --grow
volgroup vmvg00 pv.01
logvol / --fstype ext4 --name=root00 --vgname=vmvg00 --size=8192
logvol / --fstype ext4 --name=root00 --vgname=vmvg00 --size=8192 --fsoptions=defaults,discard
logvol swap --fstype swap --name=swap00 --vgname=vmvg00 --size=2048
logvol /openstack --fstype ext4 --name=openstack00 --vgname=vmvg00 --size=16384
logvol /openstack --fstype ext4 --name=openstack00 --vgname=vmvg00 --size=16384 --fsoptions=defaults,discard
{% if default_container_tech == 'nspawn' %}
logvol /var/lib/machines --fstype ext4 --name=machines00 --vgname=vmvg00 --size=8192 --grow
logvol /var/lib/machines --fstype ext4 --name=machines00 --vgname=vmvg00 --size=8192 --grow --fsoptions=defaults,discard
{% elif default_container_tech == 'lxc' %}
logvol /var/lib/machines --fstype ext4 --name=machines00 --vgname=vmvg00 --size=4096
logvol /var/lib/lxc --fstype ext4 --name=lxc00 --vgname=vmvg00 --size=8192 --grow
logvol /var/lib/machines --fstype ext4 --name=machines00 --vgname=vmvg00 --size=4096 --fsoptions=defaults,discard
logvol /var/lib/lxc --fstype ext4 --name=lxc00 --vgname=vmvg00 --size=8192 --grow --fsoptions=defaults,discard
{% endif %}
rootpw secrete
repo --name=base --baseurl={{ images[default_vm_image]['image_repo_base_url'] }}/os/x86_64/
@ -67,7 +67,7 @@ modprobe btrfs
umount /dev/vmvg00/machines00
btrfs-convert /dev/vmvg00/machines00
sed -i '/vmvg00-machines00/d' /etc/fstab
echo "/dev/mapper/vmvg00-machines00 /var/lib/machines btrfs defaults 1 2" >> /etc/fstab
echo "/dev/mapper/vmvg00-machines00 /var/lib/machines btrfs defaults,discard 1 2" >> /etc/fstab
wget --no-proxy http://{{ tftp_server }}/scripts/vm-post-install-redhat-script.sh -O /opt/vm-post-install-script.sh
chmod +x /opt/vm-post-install-script.sh