From: Jan Pechek via pve-user <pve-user@lists.proxmox.com>
To: "DERUMIER, Alexandre" <alexandre.derumier@groupe-cyllene.com>
Cc: Jan Pechek <jan.pechek@daktela.com>,
"pve-user@lists.proxmox.com" <pve-user@lists.proxmox.com>
Subject: Re: [PVE-User] Hardcoded startup RAM for QEMU memory hotplug
Date: Tue, 13 Jan 2026 10:33:38 +0100 [thread overview]
Message-ID: <mailman.324.1768296838.353.pve-user@lists.proxmox.com> (raw)
In-Reply-To: <1b5536bef426ee07ef087fc76ec1a7ca196a5afa.camel@groupe-cyllene.com>
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From: Jan Pechek <jan.pechek@daktela.com>
To: "DERUMIER, Alexandre" <alexandre.derumier@groupe-cyllene.com>
Cc: "pve-user@lists.proxmox.com" <pve-user@lists.proxmox.com>
Subject: Re: [PVE-User] Hardcoded startup RAM for QEMU memory hotplug
Date: Tue, 13 Jan 2026 10:33:38 +0100
Message-ID: <CAHQqQDZkUi60z3CsHc5-WVtPEoBETZCHRtqhF197nbR50dQ5xQ@mail.gmail.com>
Hi,
Looking at the code, it's 1024MB * the number of sockets, so adding sockets
might be workaround. Thanks for the idea. Another workaround might be to
simply disable memory hotplug before leapp.
The kernel option "memhp_default_state=online" also works. However, I think
the ability to configure the startup RAM size in Proxmox would be nice.
On Thu, Jan 8, 2026 at 4:21 PM DERUMIER, Alexandre <
alexandre.derumier@groupe-cyllene.com> wrote:
> hi currently no, but it's related to the number of cpu sockets of the
> vm. (it's 512mb by socket if I remember correctly).
>
> so, you can try a vm with 4 sockets.
>
>
> you can also add "memhp_default_state=online" to kernel boot option, it
> should auto enable the hotplug memory dimm when kernel boot
>
>
> -------- Message initial --------
> De: Jan Pechek via pve-user <pve-user@lists.proxmox.com>
> Répondre à: Proxmox VE user list <pve-user@lists.proxmox.com>
> À: pve-user@lists.proxmox.com
> Cc: Jan Pechek <jan.pechek@daktela.com>
> Objet: [PVE-User] Hardcoded startup RAM for QEMU memory hotplug
> Date: 08/01/2026 14:43:34
>
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next prev parent reply other threads:[~2026-01-13 9:34 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-08 13:43 Jan Pechek via pve-user
2026-01-08 15:21 ` DERUMIER, Alexandre via pve-user
[not found] ` <1b5536bef426ee07ef087fc76ec1a7ca196a5afa.camel@groupe-cyllene.com>
2026-01-13 9:33 ` Jan Pechek via pve-user [this message]
[not found] ` <CAHQqQDZkUi60z3CsHc5-WVtPEoBETZCHRtqhF197nbR50dQ5xQ@mail.gmail.com>
2026-01-13 10:46 ` DERUMIER, Alexandre via pve-user
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