openstack/devstack
Code Issues Proposed changes

Merge "Enable direct-io on LVM loop devices"

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Zuul 2018-12-17 02:15:14 +00:00 committed by Gerrit Code Review
commit e812d284b8
1 changed files with 8 additions and 1 deletions

9
lib/lvm

@ -99,8 +99,15 @@ function _create_lvm_volume_group {
if ! sudo vgs $vg; then if ! sudo vgs $vg; then
# Only create if the file doesn't already exists # Only create if the file doesn't already exists
[[ -f $backing_file ]] || truncate -s $size $backing_file [[ -f $backing_file ]] || truncate -s $size $backing_file
local directio=""
# Check to see if we can do direct-io
if losetup -h | grep -q direct-io; then
directio="--direct-io=on"
fi
local vg_dev local vg_dev
vg_dev=`sudo losetup -f --show $backing_file` vg_dev=$(sudo losetup -f --show $directio $backing_file)
# Only create volume group if it doesn't already exist # Only create volume group if it doesn't already exist
if ! sudo vgs $vg; then if ! sudo vgs $vg; then