From: Thomas Lamprecht <t.lamprecht@proxmox.com>
To: pve-devel@lists.proxmox.com, Fiona Ebner <f.ebner@proxmox.com>
Subject: [pve-devel] applied: [PATCH qemu-server master v2 1/4] migration: tell users to upgrade if nets-host-mtu is not supported
Date: Wed, 10 Sep 2025 13:11:35 +0200 [thread overview]
Message-ID: <175750269447.2442735.17213833793360376278.b4-ty@proxmox.com> (raw)
In-Reply-To: <20250909091918.32254-2-f.ebner@proxmox.com>
On Tue, 09 Sep 2025 11:16:57 +0200, Fiona Ebner wrote:
> In Proxmox VE 9, the default behavior for VirtIO network devices is to
> inherit the MTU from the bridge. This means that most migrations are
> potentially problematic when the nets-host-mtu parameter is not set,
> see commit 20c91f7f ("migration: preserve host_mtu for virtio-net
> devices"). While setting the parameter could be avoided in some cases,
> the information what MTU the target node bridges have is not readily
> available. Upgrading is already required to avoid actual problematic
> cases, so just tell people to upgrade when the target does not support
> preserving the VirtIO-net MTU yet in all cases.
>
> [...]
Applied, thanks!
[1/4] migration: tell users to upgrade if nets-host-mtu is not supported
commit: 67d8d092b11c9c8dbb071f705977858416584989
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next prev parent reply other threads:[~2025-09-10 11:12 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-09 9:16 [pve-devel] [PATCH-SERIES qemu-server v2 0/4] migration: reduce friction with nets-host-mtu Fiona Ebner
2025-09-09 9:16 ` [pve-devel] [PATCH qemu-server master v2 1/4] migration: tell users to upgrade if nets-host-mtu is not supported Fiona Ebner
2025-09-10 11:11 ` Thomas Lamprecht [this message]
2025-09-09 9:16 ` [pve-devel] [PATCH qemu-server master v2 2/4] migration: remove unused variable Fiona Ebner
2025-09-10 11:11 ` [pve-devel] applied: " Thomas Lamprecht
2025-09-09 9:16 ` [pve-devel] [PATCH qemu-server stable-bookworm v2 3/4] migration: only use nets-host-mtu for PVE 8 target if actually required Fiona Ebner
2025-09-10 11:38 ` [pve-devel] applied: " Thomas Lamprecht
2025-09-09 9:17 ` [pve-devel] [PATCH qemu-server stable-bookworm v2 4/4] migration: tell users to upgrade if nets-host-mtu is required but not supported Fiona Ebner
2025-09-10 11:38 ` [pve-devel] applied: " Thomas Lamprecht
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