e50b5217e7
Read all labels in parallel instead of sequentially. Originally committed as https://cgit.freebsd.org/src/commit/?id=b49e9abcf44cafaf5cfad7029c9a6adbb28346e8 Obtained from: FreeBSD Sponsored by: Spectra Logic, Axcient Reviewed-by: Jorgen Lundman <lundman@lundman.net> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Alek Pinchuk <apinchuk@axcient.com> Signed-off-by: Alan Somers <asomers@gmail.com> Closes #11467