[PVE-User] EPYC ZEN gen1 migration success after installing amd64 microcode (FYI)

[PVE-User] EPYC ZEN gen1 migration success after installing amd64 microcode (FYI)

[Jan Vlach]

Hi proxmox users,

just a quick heads up:

I have cluster with  AMD EPYC 7551P 32-Core Processor (single socket) and AMD EPYC 7281 16-Core Processor (dual socket). Both are ZEN gen1.

I’m running 8-node PVE7 with ZFS underneath.

Without enabling 'non-free’ and installing amd64-microcode (& reboot) the migration completed successfully, but VM was frozen. No networking, no console.

After installing amd64-microcode, live migration works fine both ways.

This wasn’t obvious for me, so just FYI, maybe it saves some time for somebody :)

JV

Re: [PVE-User] EPYC ZEN gen1 migration success after installing amd64 microcode (FYI)

[DERUMIER, Alexandre]

Hi,

I known that amd have disable some buggy features in zen cpu recently.


I'm always using amd64-microde && intel-microcode on my proxmox
servers,

but maybe it could be great to install them by default in proxmox iso
installation?



Le vendredi 08 septembre 2023 à 15:44 +0200, Jan Vlach a écrit :
> Hi proxmox users,
> 
> just a quick heads up:
> 
> I have cluster with  AMD EPYC 7551P 32-Core Processor (single socket)
> and AMD EPYC 7281 16-Core Processor (dual socket). Both are ZEN gen1.
> 
> I’m running 8-node PVE7 with ZFS underneath.
> 
> Without enabling 'non-free’ and installing amd64-microcode (& reboot)
> the migration completed successfully, but VM was frozen. No
> networking, no console.
> 
> After installing amd64-microcode, live migration works fine both
> ways.
> 
> This wasn’t obvious for me, so just FYI, maybe it saves some time for
> somebody :)
> 
> JV
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