Mikhail Lesyk created MESOS-7580:
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Summary: Use root fs as lower RO layer and container fs as upper
layer
Key: MESOS-7580
URL: https://issues.apache.org/jira/browse/MESOS-7580
Project: Mesos
Issue Type: Wish
Components: containerization
Reporter: Mikhail Lesyk
See example:
{code}
mkdir -p rootfs/{opt,container,workdir,result}
mount -t overlay -o
lowerdir=rootfs,upperdir=rootfs/container,workdir=rootfs/workdir none
rootfs/result
touch rootfs/result/opt/crap
umount rootfs/result
ls -a rootfs/opt/
. ..
{code}
Where rootfs - imaginary root filesystem
rootfs/opt - variable directory on that filesystem
rootfs/container - container work dir
rootfs/result - result overlayfs mountpoint(root fs from container point of
view)
So, any change under rootfs/result will be not visible from rootfs point of
view and it will remain clean, so every container could have own snapshot of
host's root filesystem, but changes would be individual.
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