Chris Mason wrote:
;) The problem is the directory entry for the snapshot, but its a little more complex. Lets say subvolA has a directory entry for snapshotZ, and then someone wanders in and snapshots subvolA, creating snapshotA'. This means that both subvolA and snashotA' have a directory entry for snapshotZ. If we delete snapshotZ we have to deal with both directory entries.
I would've expected that, if we delete snapshotZ by IOCTL / rmdir / whatever from within snapshotA', then it still exists until it's also deleted from (the original) subvolA. But maybe I just don't get it.
Is there some end-user-oriented documentation on what the semantics of snapshots and subvolumes are supposed to be? I couldn't find it with a bit of Googling and wiki reading.
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