From nobody Fri Jul 9 11:16:26 2021 X-Original-To: freebsd-stable@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 91E9E12760AF for ; Fri, 9 Jul 2021 11:16:30 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from smtp.freebsd.org (smtp.freebsd.org [96.47.72.83]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "smtp.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4GLrFp3qyVz4fvQ; Fri, 9 Jul 2021 11:16:30 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from [192.168.0.88] (unknown [195.64.148.76]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client did not present a certificate) (Authenticated sender: avg/mail) by smtp.freebsd.org (Postfix) with ESMTPSA id 15B4794CC; Fri, 9 Jul 2021 11:16:29 +0000 (UTC) (envelope-from avg@FreeBSD.org) Subject: Re: CPU hot-plug and RAM hot-add in virtual machines To: Miroslav Lachman <000.fbsd@quip.cz>, FreeBSD Stable Mailing List References: <4336a1bf-d826-dba3-9ec1-9b48cf7cd177@quip.cz> From: Andriy Gapon Message-ID: <70033628-bc3a-24d2-4c65-9a3b9c1c66d5@FreeBSD.org> Date: Fri, 9 Jul 2021 14:16:26 +0300 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:78.0) Gecko/20100101 Firefox/78.0 Thunderbird/78.11.0 List-Id: Production branch of FreeBSD source code List-Archive: https://lists.freebsd.org/archives/freebsd-stable List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-stable@freebsd.org X-BeenThere: freebsd-stable@freebsd.org MIME-Version: 1.0 In-Reply-To: <4336a1bf-d826-dba3-9ec1-9b48cf7cd177@quip.cz> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-ThisMailContainsUnwantedMimeParts: N On 08/07/2021 00:34, Miroslav Lachman wrote: > The question is simple but I cannot find answer - Does FreeBSD support hot-plug > vCPU and hot-add RAM? > Current virtualization platforms support adding CPU cores or additional RAM > without the need to reboot the guest OS. Some of our clients need to add > additional vCPUs or RAM so often that hot-plug and hot-add will be really > useful. If this is not supported on FreeBSD for now, is there any Work In > Progress? Or is there a plan to support it? I think that those features are not supported and I haven't heard of any WIP. -- Andriy Gapon