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Date: Tue, 26 Jun 2018 19:51:57 +0900 (JST)
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To: freebsd-net@freebsd.org
Subject: Re: usb ethernet adapter does not work after reboot
From: Masachika ISHIZUKA <ish@amail.plala.or.jp>
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> BTW, the triple "sync" is a waste of... well, not much except your time in
> typing it into your script. The rule to sync discs three times assumes that
> you are actually typing it. It is to allow enough time for the file
> system(s) to complete syncing before the system is halted (halt(8)) or
> power is removed. Both reboot(8) and shutdown(8) now take care of this.
> Only the first sync(8) really does anything. Typing it three times on a
> teletype takes long enough for metadata to be written.

  Thank you, Kevin.

  I want to sync nfs mounted disks before usb ethernet card is powered
down.
  I think that '/etc/rc.d/nfsuserd stop' may be better than '/bin/sync'.
-- 
Masachika ISHIZUKA