From: Ryan Harper <ryanh@us.ibm.com>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: qemu-devel <qemu-devel@nongnu.org>, kvm <kvm@vger.kernel.org>,
Juan Quintela <quintela@redhat.com>,
Pierre Riteau <Pierre.Riteau@irisa.fr>,
Liran Schour <LIRANS@il.ibm.com>
Subject: Re: Live migration of x86-64 kvm guests broken?
Date: Wed, 2 Dec 2009 10:44:08 -0600 [thread overview]
Message-ID: <20091202164408.GQ27346@us.ibm.com> (raw)
In-Reply-To: <4B1686AB.4020206@siemens.com>
* Jan Kiszka <jan.kiszka@siemens.com> [2009-12-02 09:28]:
> Hi,
>
> I'm facing stalled x86-64 guests after live migration when using kvm
> (share disk images). This does not happen with x86-32 guests or when
> disabling kvm. Both qemu and qemu-kvm git heads are affected (recent
> vmstate fixes applied). Running I/O load during the migration (e.g. a
> simple "ls -R /") seems to trigger it reliably.
>
> Can anyone confirm / comment on this? Do we fail to restore some magic
> state that only long mode cares about?
Just tested upstream qemu.git (with vmstate fixes) and I could migrate
RHEL 5.3 64-bit guest with your light io load over localhost. I'll try
remote hosts next.
--
Ryan Harper
Software Engineer; Linux Technology Center
IBM Corp., Austin, Tx
ryanh@us.ibm.com
WARNING: multiple messages have this Message-ID (diff)
From: Ryan Harper <ryanh@us.ibm.com>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Liran Schour <LIRANS@il.ibm.com>,
Pierre Riteau <Pierre.Riteau@irisa.fr>,
qemu-devel <qemu-devel@nongnu.org>, kvm <kvm@vger.kernel.org>,
Juan Quintela <quintela@redhat.com>
Subject: [Qemu-devel] Re: Live migration of x86-64 kvm guests broken?
Date: Wed, 2 Dec 2009 10:44:08 -0600 [thread overview]
Message-ID: <20091202164408.GQ27346@us.ibm.com> (raw)
In-Reply-To: <4B1686AB.4020206@siemens.com>
* Jan Kiszka <jan.kiszka@siemens.com> [2009-12-02 09:28]:
> Hi,
>
> I'm facing stalled x86-64 guests after live migration when using kvm
> (share disk images). This does not happen with x86-32 guests or when
> disabling kvm. Both qemu and qemu-kvm git heads are affected (recent
> vmstate fixes applied). Running I/O load during the migration (e.g. a
> simple "ls -R /") seems to trigger it reliably.
>
> Can anyone confirm / comment on this? Do we fail to restore some magic
> state that only long mode cares about?
Just tested upstream qemu.git (with vmstate fixes) and I could migrate
RHEL 5.3 64-bit guest with your light io load over localhost. I'll try
remote hosts next.
--
Ryan Harper
Software Engineer; Linux Technology Center
IBM Corp., Austin, Tx
ryanh@us.ibm.com
next prev parent reply other threads:[~2009-12-02 16:44 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-02 15:24 Live migration of x86-64 kvm guests broken? Jan Kiszka
2009-12-02 15:24 ` [Qemu-devel] " Jan Kiszka
2009-12-02 16:44 ` Ryan Harper [this message]
2009-12-02 16:44 ` [Qemu-devel] " Ryan Harper
2009-12-02 18:05 ` Jan Kiszka
2009-12-02 18:05 ` [Qemu-devel] " Jan Kiszka
2009-12-02 18:10 ` Ryan Harper
2009-12-02 18:10 ` [Qemu-devel] " Ryan Harper
2009-12-02 18:16 ` Jan Kiszka
2009-12-02 18:16 ` [Qemu-devel] " Jan Kiszka
2009-12-02 18:35 ` Ryan Harper
2009-12-02 18:35 ` [Qemu-devel] " Ryan Harper
2009-12-02 18:44 ` Jan Kiszka
2009-12-02 18:44 ` [Qemu-devel] " Jan Kiszka
2009-12-02 19:10 ` Ryan Harper
2009-12-02 19:10 ` [Qemu-devel] " Ryan Harper
2009-12-02 19:24 ` Ryan Harper
2009-12-02 19:24 ` [Qemu-devel] " Ryan Harper
2009-12-02 19:26 ` Jan Kiszka
2009-12-02 19:26 ` [Qemu-devel] " Jan Kiszka
2009-12-02 18:16 ` Juan Quintela
2009-12-02 18:16 ` [Qemu-devel] " Juan Quintela
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