From: Fiona Ebner <f.ebner@proxmox.com>
To: pve-devel@lists.proxmox.com
Subject: Re: [pve-devel] [PATCH qemu-server v2 2/2] migration: conntrack: avoid crash when dbus-vmstate object cannot be added (quickly enough)
Date: Mon, 6 Oct 2025 13:59:26 +0200 [thread overview]
Message-ID: <b7534885-6eba-405e-b0d7-08e2d7f9d87f@proxmox.com> (raw)
In-Reply-To: <20251006115648.804286-3-f.ebner@proxmox.com>
Am 06.10.25 um 1:57 PM schrieb Fiona Ebner:
> As reported in the community forum [0], it might happen that the
> dbus-vmstate object is not added (quickly enough) to the target QEMU
> instance, before the migration state is loaded. This would result in
> a crash of the target instance:
>
>> kvm: Unknown savevm section or instance 'dbus-vmstate/dbus-vmstate'
>> 0. Make sure that your current VM setup matches your saved VM setup,
>> including any hotplugged devices
>> kvm: load of migration failed: Invalid argument
>
> This is after the configuration is already moved and thus there also
> is no source instance running anymore.
>
> Change the type of the 'pve-dbus-vmstate@' service to 'notify', so
> that starting the service returns success only after the
> 'dbus-vmstate' object has been added to the QEMU instance.
>
> [0]: https://forum.proxmox.com/threads/172588/
>
Sorry, forgot to add
Suggested-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
before sending.
> Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
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prev parent reply other threads:[~2025-10-06 11:59 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-06 11:55 [pve-devel] [PATCH-SERIES common/qemu-server v2 0/2] migration: conntrack: fix race adding dbus-vmstate object to QEMU Fiona Ebner
2025-10-06 11:55 ` [pve-devel] [PATCH common v2 1/2] systemd: add sd_notify() helper Fiona Ebner
2025-10-06 13:14 ` Thomas Lamprecht
2025-10-07 10:26 ` Fiona Ebner
2025-10-06 11:55 ` [pve-devel] [PATCH qemu-server v2 2/2] migration: conntrack: avoid crash when dbus-vmstate object cannot be added (quickly enough) Fiona Ebner
2025-10-06 11:59 ` Fiona Ebner [this message]
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