File-Backed ZFS Kernel Panic still in 10.1-RELEASE (PR 195061)

[Will Green]

Thanks Steven. I’ll hold off releasing the updated tutorials for now.

> On 21 Apr 2015, at 17:45, Steven Hartland <killing at multiplay.co.uk> wrote:
> 
> I did actually request this back in November, but I don't seem to have had a reply so I'll chase.
> 
> On 21/04/2015 16:23, Will Green wrote:
>> 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.
>> 
>> 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=195061
>> And fixed in r274619 (2014-11-17): https://svnweb.freebsd.org/base?view=revision&revision=274619
>> 
>> However, even on 10.1-RELEASE-p9 the kernel panic still occurs (but doesn’t on 11-CURRENT).
>> 
>> Are there any plans to patch this in 10.1? I note it’s 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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