From https://www.kernel.org/doc/Documentation/filesystems/overlayfs.txt:
mount -t overlay overlay -olowerdir=/lower1:/lower2:/lower3 /merged
How can I specify that I want e.g. lower2 to be mounted at merged/home?
If all lower* layers can only be mounted at /merged, then I don't see
any way at all that overlayfs would allow me to combine e.g.
Partition MountDir MergedDir
------------------------------
/dev/sda1 /root-fs /merged
/dev/sda2 /home-fs /merged/home
I even tried to create a fake directory structure like this:
/dev/sda2 /fakedir/home /merged
...so that I would mount /dev/sda2 to /fakedir/home, and then try to use
lower2=/fakedir, but then I got a different issue, that overlayfs
doesn't include submounts, so sda2 wasn't visible at all then.
So I was unable to combine the root and home partitions to the correct
paths using overlayfs (I'm planning to use a tmpfs as the upper dir
later on).
Any help? Thank you!
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