On Wed, 20 Aug 2025 at 12:29, Till Wegmüller <[email protected]> wrote:
> If there are zpools on it you will have to run zpool export $POOL before
> shutting the bay down. Do that instead of sync as ZFS is fully Async and
> ignores sync by default.

While I agree you should always export a pool before removing it from
the system, I would note that ZFS does not ignore sync(8) requests.
In fact, it actually blocks until dirty data is committed to disk,
which is not true of older file systems like UFS where sync(8) merely
starts the process but is not blocking.

-- 
Joshua M. Clulow
http://blog.sysmgr.org

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