[OpenWrt-Devel] Overlayfs with tmpfs failed

[Jakub Jančo]

Hello,
I have problem with setting up OpenWRT to Overlafs with tmpfs upper layer.

$ mount -t overlay overlay -o
lowerdir=/test1,upperdir=/test2,workdir=/work /test3
mount: mounting overlay on /test3 failed: Invalid argument

Can someone help me, where problem can be?

Thanks.
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