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From: "Patrick M. Hausen" <hausen@punkt.de>
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Subject: What is /dev/zfs?
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Date: Thu, 29 Jun 2017 16:28:40 +0200
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Hi, folks

any pointer to an explanation would be nice,
there seems to be no zfs(4) manpage ...

Reason for asking: I have a piece of software
that uses 14,000 ioctl() calls on that device during
one execution and I'm asking myself what it tries
to do.

Thanks!
Patrick

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