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Date:      Sun, 16 Nov 2014 15:57:11 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 195061] Reproducable kernel panic on 10.1-Release when creating a zfs pool
Message-ID:  <bug-195061-8-GHfLbxXIi9@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-195061-8@https.bugs.freebsd.org/bugzilla/>
References:  <bug-195061-8@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=195061

--- Comment #6 from Steven Hartland <smh@FreeBSD.org> ---
Created attachment 149484
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=149484&action=edit
Disable free on file backed vdevs

Looking at what vdev_file_io_start is doing (calling vn_rdwr) its not clear to
me why there should be any difference between in behaviour ZFS backed and UFS
backed as they would both end up doing a write, which is of course incorrect in
both cases.

The Disable free on file backed vdevs patch extends Xin's patch to ensure
ZIO_TYPE_FREE can never get through to a file backed vdev even if we're called
without checking vdev_notrim.

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