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[Jonathan Rowley]

> On 9 May 2019, at 13:00, freebsd-virtualization-request at freebsd.org wrote:
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> Today's Topics:
> 
>   1. [Bug 237636] bhyve guest ZFS filesystem freezes in
>      zcw->zcw_cv state (bugzilla-noreply at freebsd.org)
>   2. [maybe OT] Strange behaviour when connecting to serial port
>      of a FreeBSD inside a VM (Joachim Durchholz)
>   3. [Bug 231117] bhyve: I/O lockups inside guests
>      (bugzilla-noreply at freebsd.org)
>   4. [Bug 231117] bhyve: I/O lockups inside guests
>      (bugzilla-noreply at freebsd.org)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Thu, 09 May 2019 01:53:57 +0000
> From: bugzilla-noreply at freebsd.org
> To: virtualization at FreeBSD.org
> Subject: [Bug 237636] bhyve guest ZFS filesystem freezes in
>    zcw->zcw_cv state
> Message-ID:
>    <bug-237636-27103-uuAaoXGoqC at https.bugs.freebsd.org/bugzilla/>
> Content-Type: text/plain; charset="UTF-8"
> 
> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=237636
> 
> Mark Linimon <linimon at FreeBSD.org> changed:
> 
>           What    |Removed                     |Added
> ----------------------------------------------------------------------------
>           Assignee|bugs at FreeBSD.org            |virtualization at FreeBSD.org
> 
> -- 
> You are receiving this mail because:
> You are the assignee for the bug.
> 
> ------------------------------
> 
> Message: 2
> Date: Thu, 9 May 2019 08:52:42 +0200
> From: Joachim Durchholz <jo at durchholz.org>
> To: freebsd-virtualization at freebsd.org
> Subject: [maybe OT] Strange behaviour when connecting to serial port
>    of a FreeBSD inside a VM
> Message-ID: <2c875da4-741b-3601-dd38-b191450497d7 at durchholz.org>
> Content-Type: text/plain; charset=utf-8; format=flowed
> 
> Sorry if this off-topic, please direct me to the correct list.
> 
> I have FreeBSD running inside a VirtualBox VM, and while FreeBSD boots 
> and works fine and I could successfully hook up a host's domain socket, 
> I don't see output on the socket.
> SOMETHING is working: Some boot messages are redirected, though to a 
> place that I do not see.
> 
> I have a shell script that recreates the entire situation from scratch, 
> I can describe everything in excruciating detail - where do I start?
> 
> Regards,
> Jo
> 
> 
> ------------------------------
> 
> Message: 3
> Date: Thu, 09 May 2019 07:31:01 +0000
> From: bugzilla-noreply at freebsd.org
> To: virtualization at FreeBSD.org
> Subject: [Bug 231117] bhyve: I/O lockups inside guests
> Message-ID:
>    <bug-231117-27103-uQWDRhbVjX at https.bugs.freebsd.org/bugzilla/>
> Content-Type: text/plain; charset="UTF-8"
> 
> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231117
> 
> --- Comment #24 from Mateusz Kwiatkowski <kwiat3k at panic.pl> ---
> (In reply to Rodney W. Grimes from comment #23)
> 
> Rodney, many thanks for your engagement in this matter. It seems that you were
> right suspecting that arc_max is the culprit. After reducing its size virtual
> machines are working stable for over a day. So, instead of stability issue this
> was more like user experience issue. As you see we both were tricked by top(1)
> output which looked fine and didn't indicate problem. Is it possible to have a
> notice printed in dmesg that happens (as we have for other kernel limits)?
> 
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> ------------------------------
> 
> Message: 4
> Date: Thu, 09 May 2019 09:58:01 +0000
> From: bugzilla-noreply at freebsd.org
> To: virtualization at FreeBSD.org
> Subject: [Bug 231117] bhyve: I/O lockups inside guests
> Message-ID:
>    <bug-231117-27103-mkuJ13R4sx at https.bugs.freebsd.org/bugzilla/>
> Content-Type: text/plain; charset="UTF-8"
> 
> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231117
> 
> --- Comment #25 from Mateusz Kwiatkowski <kwiat3k at panic.pl> ---
> (In reply to Mateusz Kwiatkowski from comment #24)
> I'm afraid I celebrated too soon. I/O in VM locked up - it just took more time.
> 
> Memory stats:
> Mem: 3846M Active, 4806M Inact, 26G Wired, 27G Free
> ARC: 7755M Total, 2419M MFU, 4208M MRU, 14M Anon, 478M Header, 635M Other
>     6145M Compressed, 10G Uncompressed, 1.68:1 Ratio 
> 
> I'll now test patch with virtio barriers.
> 
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> End of freebsd-virtualization Digest, Vol 441, Issue 4
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