Dear Miklos,
overlayfs works still in v4.8-rc4, but not longer in the newest kernel:
If the four directories test_lowerdir,test/upperd, test/workd,
test_mountdir exist, the command
mount -t overlay -o lowerdir=test_lowerdir,upperdir=test/upperd,workdir=test/workd,noatime overlay test_mountdir
does not produce a writable files system. The kernel says:
kernel: overlayfs: failed to create directory /root/test/workd/work (errno: 95); mounting read-only
I bisected between v4.8-rc4 and v4.8-rc4-359-g4b30b6d and found
c11b9fdd6a612f376a5e886505f1c54c16d8c380
Author: Miklos Szeredi <mszeredi@xxxxxxxxxx>
Date: Thu Sep 1 11:11:59 2016 +0200
ovl: remove posix_acl_default from workdir
responsible. Reverting this makes overlayfs work again.
Best regards
Martin
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