fix(overlayfs): split overlayfs mount in two steps (bsc#1219778) #311
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This commit splits the creation of required overlayfs underlaying directories and the actual overlayfs mount. This way it is still possible to mount the overlayfs with the generated sysroot.mount that dmsquash-live creates.
The overlayfs tree is created in a pre-mount hook so it is executed before sysroot.mount is started. Otherwise sysroot.mount starts and fails before mount hooks are executed.
Signed-off-by: David Cassany dcassany@suse.com
(cherry picked from commit bddffed)