From patchwork Fri Oct 9 02:07:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Blake X-Patchwork-Id: 303383 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6F65BC433DF for ; Fri, 9 Oct 2020 02:11:21 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CA8D122255 for ; Fri, 9 Oct 2020 02:11:20 +0000 (UTC) Authentication-Results: mail.kernel.org; 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Fri, 9 Oct 2020 02:07:18 +0000 (UTC) Received: from blue.redhat.com (ovpn-113-14.phx2.redhat.com [10.3.113.14]) by smtp.corp.redhat.com (Postfix) with ESMTP id 5756876651; Fri, 9 Oct 2020 02:07:15 +0000 (UTC) From: Eric Blake To: qemu-devel@nongnu.org Subject: [PATCH v3 0/6] Exposing backing-chain allocation over NBD Date: Thu, 8 Oct 2020 21:07:08 -0500 Message-Id: <20201009020714.1074061-1-eblake@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eblake@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=216.205.24.124; envelope-from=eblake@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/08 22:07:25 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, qemu-block@nongnu.org, vsementsov@virtuozzo.com, rjones@redhat.com, stefanha@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" v2 was here: https://lists.gnu.org/archive/html/qemu-devel/2020-09/msg10926.html Since then: rebase to master patches 1-3/5 of v2 are in pull request patch 4/5 in v2 (1/6 here) includes improvements from Vladimir patches 3-6/6 here are new (and I hope to have public patches to libnbd's 'nbdinfo --map' to take advantage of it posted soon...) Based-on: <20201008185951.1026052-1-eblake@redhat.com> ([PULL 0/8] NBD patches through 2020-10-08) Also available at: https://repo.or.cz/qemu/ericb.git/shortlog/refs/tags/nbd-alloc-depth-v3 001/6:[0056] [FC] 'nbd: Add new qemu:allocation-depth metacontext' 002/6:[0002] [FC] 'nbd: Add 'qemu-nbd -A' to expose allocation depth' 003/6:[down] 'nbd: Update qapi to support multiple bitmaps' 004/6:[down] 'nbd: Simplify qemu bitmap context name' 005/6:[down] 'nbd: Refactor counting of meta contexts' 006/6:[down] 'nbd: Allow export of multiple bitmaps for one device' Eric Blake (6): nbd: Add new qemu:allocation-depth metacontext nbd: Add 'qemu-nbd -A' to expose allocation depth nbd: Update qapi to support multiple bitmaps nbd: Simplify qemu bitmap context name nbd: Refactor counting of meta contexts nbd: Allow export of multiple bitmaps for one device docs/interop/nbd.txt | 23 +++- docs/tools/qemu-nbd.rst | 6 ++ qapi/block-core.json | 7 +- qapi/block-export.json | 20 +++- include/block/nbd.h | 8 +- blockdev-nbd.c | 20 +++- nbd/server.c | 210 +++++++++++++++++++++++++++++-------- qemu-nbd.c | 25 +++-- tests/qemu-iotests/291 | 6 +- tests/qemu-iotests/309 | 73 +++++++++++++ tests/qemu-iotests/309.out | 22 ++++ tests/qemu-iotests/group | 1 + 12 files changed, 350 insertions(+), 71 deletions(-) create mode 100755 tests/qemu-iotests/309 create mode 100644 tests/qemu-iotests/309.out