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avg
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2017-05-26T11:35:34.315618Z
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V 697
8063 verify that we do not attempt to access inactive txg

illumos/illumos-gate@b7b2590dd9f11b12a0b4878db3886068cce176af
https://github.com/illumos/illumos-gate/commit/b7b2590dd9f11b12a0b4878db3886068cce176af

https://www.illumos.org/issues/8063
  A standard practice in ZFS is to keep track of "per-txg" state. Any of
  the 3 active TXG's (open, quiescing, syncing) can have different values
  for this state. We should assert that we do not attempt to modify other
  (inactive) TXG's.

Reviewed by: Serapheim Dimitropoulos <serapheim@delphix.com>
Reviewed by: Pavel Zakharov <pavel.zakharov@delphix.com>
Approved by: Robert Mustacchi <rm@joyent.com>
Author: Matthew Ahrens <mahrens@delphix.com>

END