From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1A11DF419A0 for ; Wed, 15 Apr 2026 12:46:13 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists1p.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1wCzd0-0005dj-PL; Wed, 15 Apr 2026 08:45:58 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wCzcw-0005bX-Tk for qemu-devel@nongnu.org; Wed, 15 Apr 2026 08:45:55 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wCzcu-00036t-LW for qemu-devel@nongnu.org; Wed, 15 Apr 2026 08:45:54 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1776257150; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=a4YL+q5AGi6nO3nCACP7fANYPbFkTFgwwCYem+atEJg=; b=e/Jn59gShPx4tf+IlHD0jgFhmKBtn4bA5FMNeUjykS7UjgFwqEeDATIN3tkcZt7zJAEr/y YatwugvDR+B9yPamabZXdu1XKCDMksHnRRGvq9TMuJlowd4nUpTWt63T7V7xwCawghvtVI pXQZ4b9g170H+cd+5d0LC1Mts8AMNxI= Received: from mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-584-a2cRu78sOGKSe834vI7MgA-1; Wed, 15 Apr 2026 08:45:47 -0400 X-MC-Unique: a2cRu78sOGKSe834vI7MgA-1 X-Mimecast-MFC-AGG-ID: a2cRu78sOGKSe834vI7MgA_1776257145 Received: from mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.111]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 3A989180049F; Wed, 15 Apr 2026 12:45:45 +0000 (UTC) Received: from localhost (unknown [10.44.34.70]) by mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 39558180044F; Wed, 15 Apr 2026 12:45:43 +0000 (UTC) Date: Wed, 15 Apr 2026 08:45:42 -0400 From: Stefan Hajnoczi To: Matthieu Rolla Cc: kbusch@kernel.org, Klaus Jensen , qemu-devel@nongnu.org, qemu-block@nongnu.org, mr-083 , John Meneghini Subject: Re: [PATCH 0/2] NVMe namespace hotplug and drive reconnection support Message-ID: <20260415124542.GB163810@fedora> References: <20260409060155.94704-1-matthieu@min.io> <20260414124221.GB111076@fedora> <20260414181030.GB136064@fedora> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="Ufh6uJhM4JmAAARw" Content-Disposition: inline In-Reply-To: X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 Received-SPF: pass client-ip=170.10.133.124; envelope-from=stefanha@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.54, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org --Ufh6uJhM4JmAAARw Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Tue, Apr 14, 2026 at 08:14:16PM +0200, Matthieu Rolla wrote: > To clarify, we're not swapping to a different backend. It's the same disk file being disconnected and reconnected, simulating a physical drive being pulled and reinserted. Is it necessary to drive_del to simulate PCIe Surprise Down? Can you perform just the PCIe actions without removing the drive from the NVMe device? That way the drive_insert command is not necessary. Stefan --Ufh6uJhM4JmAAARw Content-Type: application/pgp-signature; name=signature.asc -----BEGIN PGP SIGNATURE----- iQEzBAEBCgAdFiEEhpWov9P5fNqsNXdanKSrs4Grc8gFAmnfiHYACgkQnKSrs4Gr c8jrDwf9H3i0m9q3czqHQoZndwTwxuJrDSWxapf3Q4vMQgM+V32ZepdmfG0SKDWz 40OGwcfu1g0/ogdDmsJlLto1bcHayibNUg6Ez6x6ahzqGJbMyfpoDYETbOfjQ6gN sUUM53TumT/aBl0fuwfA7OmUJxBN2m/YWR1MQ68gQDYmoGVBHJO1PQlzvI3ZtfnK VdT5gqhDlQAoFCDE/oa3MPmSrEyxiVw6Mw7Wju9CZ6oiG7VSJz86t7SJ66zBGJdl 0C9qUYvMgMejRUJm7FqyxzrFLfd2vtxfsHiETYXiv06BAIU6Cth7zDJR3FAI8I9W t9Ht4OIqJB471pzrpHPirrnjlZ/CrA== =Cfbo -----END PGP SIGNATURE----- --Ufh6uJhM4JmAAARw--