[Bug 203864] ZFS deadlock between zfs send, zfs rename and ctrl-C

[K. Macy]

On Saturday, July 9, 2016, <bugzilla-noreply at freebsd.org> wrote:

> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203864
>
> --- Comment #17 from Andriy Gapon <avg at FreeBSD.org> ---
> Another observation is that the current code seems to be broken in a
> couple of
> places as well.
>
> 1. dsl_dataset_rename_snapshot_sync_impl() uses ddrsa_fsname to construct
> the
> old and new snapshot names, but this would be wrong in the case of a
> recursive
> snpashot rename (zfs rename -r x at snap1 x at snap2) as ddrsa_fsname always
> points
> to the name of the top level filesystem.
>
> 2. dsl_dataset_promote_sync(): as far as I can see, oldname is never
> populated,
> so the code can do arbitrary renames.


Have you tried enabling opensolaris witness?

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