Interesting. Yes, I think it’s something to do with the readdir API changes from 3.10 to 3.11. I’m curious what it is about ext4 that could cause this. Will investigate.
Thanks, Erez. On May 2, 2014, at 6:56 PM, Theodore Tso <[email protected]> wrote: > It looks like the incompatibility is ext4 specific. If the rw layer is > either tmpfs or xfs, the readdir of the union mount works fine. > > If the rw layer uses ext4, ls or readdir on the unionfs mount point shows > nothing, although as Vaibhav pointed out, you can stat files in the ro layer, > and if you copy files into the unionfs mountpoint, the file shows up in the > rw layer. It's just readdir which is apparently broken. > > I'm guessing the 3.10/3.11 era changes in how unionfs interfaces with readdir > somehow is broken with respect to how ext4 works..... > > -- Ted >
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