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Date:      Tue, 21 Apr 2015 16:23:28 +0100
From:      Will Green <will@sundivenetworks.com>
To:        freebsd-stable@freebsd.org
Subject:   File-Backed ZFS Kernel Panic still in 10.1-RELEASE (PR 195061)
Message-ID:  <2F473FFD-108D-428B-B2E1-511AA3F754B0@sundivenetworks.com>

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Hello,

I have been updating my ZFS tutorials for use on FreeBSD 10.1. To allow =
users to experiment with ZFS I use file-backed ZFS pools. On FreeBSD =
10.1 they cause a kernel panic.=20

For example a simple command like the following causes a panic: zpool =
create /tmp/zfstut/disk1

This issue was identified in PR 195061: =
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D195061=20
And fixed in r274619 (2014-11-17): =
https://svnweb.freebsd.org/base?view=3Drevision&revision=3D274619=20

However, even on 10.1-RELEASE-p9 the kernel panic still occurs (but =
doesn=E2=80=99t on 11-CURRENT).

Are there any plans to patch this in 10.1? I note it=E2=80=99s not in =
the errata.

My tutorials are not the only ones that use file-backed ZFS: new users =
experimenting with ZFS on FreeBSD are likely to encounter this issue.

Thanks,
Will=



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