From patchwork Wed Sep 30 12:11:00 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Blake X-Patchwork-Id: 272364 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=-3.8 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 BD51EC4727E for ; Wed, 30 Sep 2020 12:13:20 +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 1AA55206B7 for ; Wed, 30 Sep 2020 12:13:19 +0000 (UTC) Authentication-Results: mail.kernel.org; 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Wed, 30 Sep 2020 12:11:12 +0000 (UTC) Received: from blue.redhat.com (ovpn-112-208.phx2.redhat.com [10.3.112.208]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2613260C05; Wed, 30 Sep 2020 12:11:06 +0000 (UTC) From: Eric Blake To: qemu-devel@nongnu.org Subject: [PATCH v2 0/5] Exposing backing-chain allocation over NBD Date: Wed, 30 Sep 2020 07:11:00 -0500 Message-Id: <20200930121105.667049-1-eblake@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 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=63.128.21.124; envelope-from=eblake@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/30 00:31:59 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] 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=-0.469, 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_H5=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, pkrempa@redhat.com, qemu-block@nongnu.org, rjones@redhat.com, vsementsov@virtuozzo.com, stefanha@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" v1 was here: https://lists.gnu.org/archive/html/qemu-devel/2020-09/msg09623.htm l Based-on: <20200924152717.287415-1-kwolf@redhat.com> (block/export: Add infrastructure and QAPI for block exports) Also available at: https://repo.or.cz/qemu/ericb.git/shortlog/refs/tags/nbd-alloc-depth-v2 Since then: - rebase on Kevin's work - add new patch to fix qemu-nbd SIGINT (conflicts with Stefan's work, we can either rebase his on mine or drop mine if his goes in first) - split out fix for handling NUL bytes from client [Vladimir] - further cleanups of query parsing [Vladimir] - more documentation of how we could also expose actual depth in remaining bits of the context reply [Rich] 001/5:[down] 'qemu-nbd: Honor SIGINT and SIGHUP' 002/5:[down] 'nbd/server: Reject embedded NUL in NBD strings' 003/5:[0139] [FC] 'nbd: Simplify meta-context parsing' 004/5:[0035] [FC] 'nbd: Add new qemu:allocation-depth metacontext' 005/5:[0038] [FC] 'nbd: Add 'qemu-nbd -A' to expose allocation depth' Eric Blake (5): qemu-nbd: Honor SIGINT and SIGHUP nbd/server: Reject embedded NUL in NBD strings nbd: Simplify meta-context parsing nbd: Add new qemu:allocation-depth metacontext nbd: Add 'qemu-nbd -A' to expose allocation depth docs/interop/nbd.txt | 22 ++- docs/tools/qemu-nbd.rst | 6 + qapi/block-core.json | 7 +- qapi/block-export.json | 6 +- include/block/nbd.h | 8 +- blockdev-nbd.c | 2 + nbd/server.c | 324 +++++++++++++++++++++---------------- qemu-nbd.c | 20 ++- tests/qemu-iotests/309 | 73 +++++++++ tests/qemu-iotests/309.out | 22 +++ tests/qemu-iotests/group | 1 + 11 files changed, 342 insertions(+), 149 deletions(-) create mode 100755 tests/qemu-iotests/309 create mode 100644 tests/qemu-iotests/309.out Reviewed-by: Vladimir Sementsov-Ogievskiy