Date: Wed, 18 Sep 2013 14:23:26 +0000 From: "Abhishek Gupta (LIS)" <abgupta@microsoft.com> To: Karl Pielorz <kpielorz_lst@tdx.co.uk>, "freebsd-virtualization@freebsd.org" <freebsd-virtualization@freebsd.org> Subject: RE: Hyper-V 2012 Cluster / Failover - supported? - Any known issues? Message-ID: <155969fa70a34e41a84649bf3cb81c21@BL2PR03MB210.namprd03.prod.outlook.com> In-Reply-To: <18D121A056145C32F0501114@Mail-PC.tdx.co.uk>
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Hi Karl,
Thanks for reporting the issue. Please give us some time to investigate and get back to you on this. In the meantime I wanted to ask if setting up a Hyper-V replica for the FreeBSD VM and then a manual failover reproduces the same symptoms? Please let me know.
Thanks,
Abhishek
________________________________________
From: owner-freebsd-virtualization@freebsd.org <owner-freebsd-virtualization@freebsd.org> on behalf of Karl Pielorz <kpielorz_lst@tdx.co.uk>
Sent: Wednesday, September 18, 2013 5:42 AM
To: freebsd-virtualization@freebsd.org
Subject: Hyper-V 2012 Cluster / Failover - supported? - Any known issues?
Hi,
As you've probably seen from my previous posts, we're looking at using
Hyper-V with FreeBSD.
We built a test system (2 node cluster) - and had 2 HA hosts running on it
(a Windows 7 install, and a FreeBSD install from base/projects/hyperv
r255634).
Live migration works for both hosts (i.e. to the other cluster node, and
back) - but a failure of the node [power pulled / non-graceful shutdown]
running the VM's - seems to trash the FreeBSD system.
Hyper-V correctly see's the node fail, and restarts both VM's on the
remaining node. Windows 7 boots fine (says it wasn't shut down correctly -
which is correct) - but FreeBSD doesn't survive.
At boot time we get a blank screen with "-" on it (i.e. the first part of
the boot 'spinner') - and nothing else.
Booting to a network copy of FreeBSD and looking at the underlying virtual
disk - it appears to be trashed. You can mount it (but it understandably
warns it's not clean) - however, any access leads to an instant panic ('bad
dir ino 2 at offset 0: mangled entry').
Trying to run fsck against the file system throws up an impressive amounts
of 'bad magic' errors and 'rebuild cylinder group?' prompts.
Should the current FreeBSD Hyper-V drivers support this? (like I said, live
migration worked without an issue - and Windows recovered fine from the
failure).
The Hyper-V is running under WS2012, with a Synology SAN - if you need any
more info, let me know,
Thanks,
-Karl
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