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devmapper: update to be functional, usable

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base_image_size is effectively the max size of the thinpool snapshot,
and this is static (does not resize).  If you are running containers
with larger individual layers, this will fail. (elastic is a good test
for this).

The thinpool should be 10GB, not 1GB (to align with the .img's defined
earlier in file).

Fixes: #266

Signed-off-by: Eric Ernst <eric.ernst@intel.com>
This commit is contained in:
Eric Ernst
2019-11-11 17:44:52 +00:00
committed by Ganesh Maharaj Mahalingam
parent 7efe99f139
commit b4e6813ed6
1 changed files with 3 additions and 3 deletions
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clr-k8s-examples/containerd_devmapper_setup.sh
+3 -3
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@@ -44,18 +44,18 @@ sudo systemctl enable --now containerd-devmapper
# no. of feature arguments
# Skip zeroing blocks for new volumes.
sudo dmsetup create contd-thin-pool \
--table "0 2097152 thin-pool /dev/loop21 /dev/loop20 512 32768 1 skip_block_zeroing"
--table "0 20971520 thin-pool /dev/loop21 /dev/loop20 512 32768 1 skip_block_zeroing"
sudo mkdir -p /etc/containerd/
if [ -f /etc/containerd/config.toml ]
then
sudo sed -i 's|^\(\[plugins\]\).*|\1\n \[plugins.devmapper\]\n pool_name = \"contd-thin-pool\"\n base_image_size = \"512MB\"|' /etc/containerd/config.toml
sudo sed -i 's|^\(\[plugins\]\).*|\1\n \[plugins.devmapper\]\n pool_name = \"contd-thin-pool\"\n base_image_size = \"4096MB\"|' /etc/containerd/config.toml
else
cat<<EOT | sudo tee /etc/containerd/config.toml
[plugins]
[plugins.devmapper]
pool_name = "contd-thin-pool"
base_image_size = "512MB"
base_image_size = "4096MB"
EOT
fi