From nobody Wed Jul 7 21:34:42 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 0714D11F6E4A for ; Wed, 7 Jul 2021 21:34:47 +0000 (UTC) (envelope-from SRS0=EUh4=L7=quip.cz=000.fbsd@elsa.codelab.cz) Received: from elsa.codelab.cz (elsa.codelab.cz [94.124.105.4]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4GKt456N6dz3Qg9 for ; Wed, 7 Jul 2021 21:34:45 +0000 (UTC) (envelope-from SRS0=EUh4=L7=quip.cz=000.fbsd@elsa.codelab.cz) Received: from elsa.codelab.cz (localhost [127.0.0.1]) by elsa.codelab.cz (Postfix) with ESMTP id 8F87028417 for ; Wed, 7 Jul 2021 23:34:43 +0200 (CEST) Received: from illbsd.quip.test (ip-94-113-69-69.net.upcbroadband.cz [94.113.69.69]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by elsa.codelab.cz (Postfix) with ESMTPSA id C90BB28411 for ; Wed, 7 Jul 2021 23:34:42 +0200 (CEST) To: FreeBSD Stable Mailing List From: Miroslav Lachman <000.fbsd@quip.cz> Subject: CPU hot-plug and RAM hot-add in virtual machines Message-ID: <4336a1bf-d826-dba3-9ec1-9b48cf7cd177@quip.cz> Date: Wed, 7 Jul 2021 23:34:42 +0200 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 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 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4GKt456N6dz3Qg9 X-Spamd-Bar: ++ Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=none (mx1.freebsd.org: domain of SRS0=EUh4=L7=quip.cz=000.fbsd@elsa.codelab.cz has no SPF policy when checking 94.124.105.4) smtp.mailfrom=SRS0=EUh4=L7=quip.cz=000.fbsd@elsa.codelab.cz X-Spamd-Result: default: False [2.95 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; TO_DN_ALL(0.00)[]; FORGED_SENDER(0.30)[000.fbsd@quip.cz,SRS0=EUh4=L7=quip.cz=000.fbsd@elsa.codelab.cz]; RECEIVED_SPAMHAUS_PBL(0.00)[94.113.69.69:received]; RCVD_TLS_LAST(0.00)[]; R_DKIM_NA(0.00)[]; RBL_DBL_DONT_QUERY_IPS(0.00)[94.124.105.4:from]; MIME_TRACE(0.00)[0:+]; FROM_NEQ_ENVFROM(0.00)[000.fbsd@quip.cz,SRS0=EUh4=L7=quip.cz=000.fbsd@elsa.codelab.cz]; ASN(0.00)[asn:42000, ipnet:94.124.104.0/21, country:CZ]; MID_RHS_MATCH_FROM(0.00)[]; ARC_NA(0.00)[]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_SPAM_SHORT(0.85)[0.853]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-stable@freebsd.org]; AUTH_NA(1.00)[]; NEURAL_SPAM_MEDIUM(0.10)[0.103]; RCPT_COUNT_ONE(0.00)[1]; SPAMHAUS_ZRD(0.00)[94.124.105.4:from:127.0.2.255]; DMARC_NA(0.00)[quip.cz]; NEURAL_SPAM_LONG(0.79)[0.793]; R_SPF_NA(0.00)[no SPF record]; MAILMAN_DEST(0.00)[freebsd-stable] X-ThisMailContainsUnwantedMimeParts: N 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? Kind regards Miroslav Lachman