857a214d03
FreeBSD zfs_ioc_rename() has an option, not present upstream, that allows to rename snapshots without unmounting them first. I am not sure what is a rationale for that option, but its actual behavior was the opposite of the intended behavior. That is, by default the snapshots were not unmounted. The option was introduced as part of a large update from upstream in r248498. One of the consequences was a havoc under .zfs/snapshot after the rename. The snapshots got new names but were mounted on top of directories with old names, so readdir would list the new names, but lookup would still find the old mounts. PR: 209093 Reported by: Frédéric VANNIÈRE <f.vanniere@planet-work.com> MFC after: 5 days |
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dev |