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 X-Spam-Level: X-Spam-Status: No, score=0.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,HTML_MESSAGE, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 26E62C2BA19 for ; Tue, 21 Apr 2020 05:07:43 +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 D12B7206D6 for ; Tue, 21 Apr 2020 05:07:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=qnap.com header.i=@qnap.com header.b="JSbXiSZ3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D12B7206D6 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=qnap.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:50962 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jQl8H-0007sb-Vd for qemu-devel@archiver.kernel.org; Tue, 21 Apr 2020 01:07:42 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:41362) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jQl7S-000771-Lx for qemu-devel@nongnu.org; Tue, 21 Apr 2020 01:06:51 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.90_1) (envelope-from ) id 1jQl7R-0000yy-5S for qemu-devel@nongnu.org; Tue, 21 Apr 2020 01:06:50 -0400 Received: from mail-pj1-x1043.google.com ([2607:f8b0:4864:20::1043]:33909) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jQl7Q-0000yA-Kb for qemu-devel@nongnu.org; Tue, 21 Apr 2020 01:06:48 -0400 Received: by mail-pj1-x1043.google.com with SMTP id my1so784994pjb.1 for ; Mon, 20 Apr 2020 22:06:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qnap.com; s=google; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language; bh=Q/PyavAXXeHM7QKDyTjIJSple0+Kg45NVgt9n3Q98GQ=; b=JSbXiSZ3bh+tuhtvDIlsu8p5HKAuRhGyzCXXZdchhy7Q5Pak5mufn0viwA/mzPLQxV U/stVUPkMUmRycS/wraNxAe0yFbwqRIdnTxJYyBN8lASkxoZJeOnQY+MQV8igtNmoH9d 9j2E4eZn4BwerPVoKKisz11hS5PCjBB6wTP1E= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language; bh=Q/PyavAXXeHM7QKDyTjIJSple0+Kg45NVgt9n3Q98GQ=; b=ijJkGwnFoTfIF6UJSnwEiaI3iXfJLHqv1yn2cdjjqSP6WdRATFpP7mKRRww/zlggvw oi3LqESwZDzDl1wJjUZRI7HW1IZemucjoKpoMeJ9XpmRE7tU+9QXnAsTcWnjr+X1xJha qNaeZR0TKqjyus2w+ZzqTMuD3d82lqdA7+VD3SlOTu+eI/844HFCMUgZRN/RXgnp2ATS 0sK3qss5zEomhEx9uS6n+HL70/yEiHLvBwpIeasbp1EuBz3vCVTI8YLosZJREKiPELPf 9bNRw0idoqv3/4tRUR61+N4ML1DUvmppmufPoXkIUI+HhcNSnZzs+RyQxsoqwyaqSrQS lvHQ== X-Gm-Message-State: AGi0PubHSFCyISxND6wBbsI/R/wDvaRPiMqOMS080kvlcIs86dmfICv8 B9JnqG+Eo+QoTy3HJFGPsd+YF6Vy0/ktEQ== X-Google-Smtp-Source: APiQypJFs1DAzVQNdThcciK9pCO1POxetrqxvmOaFES7YsMGWrdQJPzomYa4zyRDwaP5crZPNjs+dg== X-Received: by 2002:a17:90a:9b82:: with SMTP id g2mr3557984pjp.72.1587445605513; Mon, 20 Apr 2020 22:06:45 -0700 (PDT) Received: from Jing-Weide-MacBook-Pro-3.local (202-39-79-13.HINET-IP.hinet.net. [202.39.79.13]) by smtp.gmail.com with ESMTPSA id z23sm1196411pfr.136.2020.04.20.22.06.43 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 20 Apr 2020 22:06:44 -0700 (PDT) Subject: Re: [PATCH v4 00/30] Add subcluster allocation to qcow2 To: Alberto Garcia , qemu-devel@nongnu.org References: From: Derek Su Message-ID: Date: Tue, 21 Apr 2020 13:06:42 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/alternative; boundary="------------A5CF68F3F777D14038F772A9" Content-Language: en-US Received-SPF: pass client-ip=2607:f8b0:4864:20::1043; envelope-from=dereksu@qnap.com; helo=mail-pj1-x1043.google.com X-detected-operating-system: by eggs.gnu.org: Error: [-] PROGRAM ABORT : Malformed IPv6 address (bad octet value). Location : parse_addr6(), p0f-client.c:67 X-Received-From: 2607:f8b0:4864:20::1043 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This is a multi-part message in MIME format. --------------A5CF68F3F777D14038F772A9 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Hello, This work is promising and interesting. I'd like to try this new feature. Could you please export a branch because the patches cannot be applied to current master? Thanks. Regards, Derek On 2020/3/18 上午2:15, Alberto Garcia wrote: > Hi, > > here's the new version of the patches to add subcluster allocation > support to qcow2. > > Please refer to the cover letter of the first version for a full > description of the patches: > > https://lists.gnu.org/archive/html/qemu-block/2019-10/msg00983.html > > I think that this version fixes all the problems pointed out by Max > and Eric during the review a couple of weeks ago. I also dropped the > RFC tag. > > Berto > > v4: > - Patch 01: New patch > - Patch 02: New patch > - Patch 05: Documentation updates [Eric] > - Patch 06: Fix rebase conflicts > - Patch 07: Change bit order in the subcluster allocation bitmap. > Change incompatible bit number. [Max, Eric] > - Patch 09: Rename QCOW_MAX_SUBCLUSTERS_PER_CLUSTER to > QCOW_EXTL2_SUBCLUSTERS_PER_CLUSTER [Eric] > - Patch 13: Change bit order in the subcluster allocation bitmap [Max, Eric] > Add more documentation. > Ignore the subcluster bitmap in the L2 entries of > compressed clusters. > - Patch 14: New patch > - Patch 15: Update to work with the changes from patches 02 and 14. > - Patch 16: Update to work with the changes from patches 02 and 14. > - Patch 18: Update to work with the changes from patches 02 and 14. > Update documentation. > Fix return value on early exit. > - Patch 20: Make sure to clear the subcluster allocation bitmap when a > cluster is unallocated. > - Patch 26: Update to work with the changes from patch 14. > - Patch 27: New patch [Max] > - Patch 28: Update version number, incompatible bit number and test > expectations. > - Patch 30: Add new tests. > Make the test verify its own results. [Max] > > v3: https://lists.gnu.org/archive/html/qemu-block/2019-12/msg00587.html > - Patch 01: Rename host_offset to host_cluster_offset and make 'bytes' > an unsigned int [Max] > - Patch 03: Rename cluster_needs_cow to cluster_needs_new_alloc and > count_cow_clusters to count_single_write_clusters. Update > documentation and add more assertions and checks [Max] > - Patch 09: Update qcow2_co_truncate() to properly support extended L2 > entries [Max] > - Patch 10: Forbid calling set_l2_bitmap() if the image does not have > extended L2 entries [Max] > - Patch 11 (new): Add QCow2SubclusterType [Max] > - Patch 12 (new): Replace QCOW2_CLUSTER_* with QCOW2_SUBCLUSTER_* > - Patch 13 (new): Handle QCOW2_SUBCLUSTER_UNALLOCATED_ALLOC > - Patch 14: Use QCow2SubclusterType instead of QCow2ClusterType [Max] > - Patch 15: Use QCow2SubclusterType instead of QCow2ClusterType [Max] > - Patch 19: Don't call set_l2_bitmap() if the image does not have > extended L2 entries [Max] > - Patch 21: Use smaller data types. > - Patch 22: Don't call set_l2_bitmap() if the image does not have > extended L2 entries [Max] > - Patch 23: Use smaller data types. > - Patch 25: Update test results and documentation. Move the check for > the minimum subcluster size to validate_cluster_size(). > - Patch 26 (new): Add subcluster support to qcow2_measure() > - Patch 27: Add more tests > > v2: https://lists.gnu.org/archive/html/qemu-block/2019-10/msg01642.html > - Patch 12: Update after the changes in 88f468e546. > - Patch 21 (new): Clear the L2 bitmap when allocating a compressed > cluster. Compressed clusters should have the bitmap all set to 0. > - Patch 24: Document the new fields in the QAPI documentation [Eric]. > - Patch 25: Allow qcow2 preallocation with backing files. > - Patch 26: Add some tests for qcow2 images with extended L2 entries. > > v1: https://lists.gnu.org/archive/html/qemu-block/2019-10/msg00983.html > > Output of git backport-diff against v3: > > Key: > [----] : patches are identical > [####] : number of functional differences between upstream/downstream patch > [down] : patch is downstream-only > The flags [FC] indicate (F)unctional and (C)ontextual differences, respectively > > 001/30:[down] 'qcow2: Make Qcow2AioTask store the full host offset' > 002/30:[down] 'qcow2: Convert qcow2_get_cluster_offset() into qcow2_get_host_offset()' > 003/30:[----] [-C] 'qcow2: Add calculate_l2_meta()' > 004/30:[----] [--] 'qcow2: Split cluster_needs_cow() out of count_cow_clusters()' > 005/30:[0020] [FC] 'qcow2: Process QCOW2_CLUSTER_ZERO_ALLOC clusters in handle_copied()' > 006/30:[0010] [FC] 'qcow2: Add get_l2_entry() and set_l2_entry()' > 007/30:[0020] [FC] 'qcow2: Document the Extended L2 Entries feature' > 008/30:[----] [--] 'qcow2: Add dummy has_subclusters() function' > 009/30:[0004] [FC] 'qcow2: Add subcluster-related fields to BDRVQcow2State' > 010/30:[----] [--] 'qcow2: Add offset_to_sc_index()' > 011/30:[----] [-C] 'qcow2: Add l2_entry_size()' > 012/30:[----] [--] 'qcow2: Update get/set_l2_entry() and add get/set_l2_bitmap()' > 013/30:[0046] [FC] 'qcow2: Add QCow2SubclusterType and qcow2_get_subcluster_type()' > 014/30:[down] 'qcow2: Add cluster type parameter to qcow2_get_host_offset()' > 015/30:[0082] [FC] 'qcow2: Replace QCOW2_CLUSTER_* with QCOW2_SUBCLUSTER_*' > 016/30:[0002] [FC] 'qcow2: Handle QCOW2_SUBCLUSTER_UNALLOCATED_ALLOC' > 017/30:[----] [-C] 'qcow2: Add subcluster support to calculate_l2_meta()' > 018/30:[down] 'qcow2: Add subcluster support to qcow2_get_host_offset()' > 019/30:[----] [--] 'qcow2: Add subcluster support to zero_in_l2_slice()' > 020/30:[0012] [FC] 'qcow2: Add subcluster support to discard_in_l2_slice()' > 021/30:[----] [--] 'qcow2: Add subcluster support to check_refcounts_l2()' > 022/30:[----] [--] 'qcow2: Fix offset calculation in handle_dependencies()' > 023/30:[----] [-C] 'qcow2: Update L2 bitmap in qcow2_alloc_cluster_link_l2()' > 024/30:[----] [--] 'qcow2: Clear the L2 bitmap when allocating a compressed cluster' > 025/30:[----] [--] 'qcow2: Add subcluster support to handle_alloc_space()' > 026/30:[0006] [FC] 'qcow2: Restrict qcow2_co_pwrite_zeroes() to full clusters only' > 027/30:[down] 'qcow2: Assert that expand_zero_clusters_in_l1() does not support subclusters' > 028/30:[0019] [FC] 'qcow2: Add the 'extended_l2' option and the QCOW2_INCOMPAT_EXTL2 bit' > 029/30:[----] [--] 'qcow2: Add subcluster support to qcow2_measure()' > 030/30:[0313] [FC] 'iotests: Add tests for qcow2 images with extended L2 entries' > > Alberto Garcia (30): > qcow2: Make Qcow2AioTask store the full host offset > qcow2: Convert qcow2_get_cluster_offset() into qcow2_get_host_offset() > qcow2: Add calculate_l2_meta() > qcow2: Split cluster_needs_cow() out of count_cow_clusters() > qcow2: Process QCOW2_CLUSTER_ZERO_ALLOC clusters in handle_copied() > qcow2: Add get_l2_entry() and set_l2_entry() > qcow2: Document the Extended L2 Entries feature > qcow2: Add dummy has_subclusters() function > qcow2: Add subcluster-related fields to BDRVQcow2State > qcow2: Add offset_to_sc_index() > qcow2: Add l2_entry_size() > qcow2: Update get/set_l2_entry() and add get/set_l2_bitmap() > qcow2: Add QCow2SubclusterType and qcow2_get_subcluster_type() > qcow2: Add cluster type parameter to qcow2_get_host_offset() > qcow2: Replace QCOW2_CLUSTER_* with QCOW2_SUBCLUSTER_* > qcow2: Handle QCOW2_SUBCLUSTER_UNALLOCATED_ALLOC > qcow2: Add subcluster support to calculate_l2_meta() > qcow2: Add subcluster support to qcow2_get_host_offset() > qcow2: Add subcluster support to zero_in_l2_slice() > qcow2: Add subcluster support to discard_in_l2_slice() > qcow2: Add subcluster support to check_refcounts_l2() > qcow2: Fix offset calculation in handle_dependencies() > qcow2: Update L2 bitmap in qcow2_alloc_cluster_link_l2() > qcow2: Clear the L2 bitmap when allocating a compressed cluster > qcow2: Add subcluster support to handle_alloc_space() > qcow2: Restrict qcow2_co_pwrite_zeroes() to full clusters only > qcow2: Assert that expand_zero_clusters_in_l1() does not support > subclusters > qcow2: Add the 'extended_l2' option and the QCOW2_INCOMPAT_EXTL2 bit > qcow2: Add subcluster support to qcow2_measure() > iotests: Add tests for qcow2 images with extended L2 entries > > docs/interop/qcow2.txt | 68 ++- > docs/qcow2-cache.txt | 19 +- > qapi/block-core.json | 7 + > block/qcow2.h | 178 +++++++- > include/block/block_int.h | 1 + > block/qcow2-cluster.c | 696 ++++++++++++++++++++----------- > block/qcow2-refcount.c | 38 +- > block/qcow2.c | 257 +++++++----- > tests/qemu-iotests/031.out | 8 +- > tests/qemu-iotests/036.out | 4 +- > tests/qemu-iotests/049.out | 102 ++--- > tests/qemu-iotests/060.out | 1 + > tests/qemu-iotests/061 | 6 + > tests/qemu-iotests/061.out | 25 +- > tests/qemu-iotests/065 | 18 +- > tests/qemu-iotests/082.out | 48 ++- > tests/qemu-iotests/085.out | 38 +- > tests/qemu-iotests/144.out | 4 +- > tests/qemu-iotests/182.out | 2 +- > tests/qemu-iotests/185.out | 8 +- > tests/qemu-iotests/198.out | 2 + > tests/qemu-iotests/206.out | 4 + > tests/qemu-iotests/242.out | 5 + > tests/qemu-iotests/255.out | 8 +- > tests/qemu-iotests/271 | 359 ++++++++++++++++ > tests/qemu-iotests/271.out | 244 +++++++++++ > tests/qemu-iotests/280.out | 2 +- > tests/qemu-iotests/common.filter | 1 + > tests/qemu-iotests/group | 1 + > 29 files changed, 1682 insertions(+), 472 deletions(-) > create mode 100755 tests/qemu-iotests/271 > create mode 100644 tests/qemu-iotests/271.out > --------------A5CF68F3F777D14038F772A9 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit 
Hello,

This work is promising and interesting.
I'd like to try this new feature.
Could you please export a branch because the patches cannot be applied to current master?
Thanks.

Regards,
Derek

On 2020/3/18 上午2:15, Alberto Garcia wrote:
Hi,

here's the new version of the patches to add subcluster allocation
support to qcow2.

Please refer to the cover letter of the first version for a full
description of the patches:

   https://lists.gnu.org/archive/html/qemu-block/2019-10/msg00983.html

I think that this version fixes all the problems pointed out by Max
and Eric during the review a couple of weeks ago. I also dropped the
RFC tag.

Berto

v4:
- Patch 01: New patch
- Patch 02: New patch
- Patch 05: Documentation updates [Eric]
- Patch 06: Fix rebase conflicts
- Patch 07: Change bit order in the subcluster allocation bitmap.
            Change incompatible bit number. [Max, Eric]
- Patch 09: Rename QCOW_MAX_SUBCLUSTERS_PER_CLUSTER to
            QCOW_EXTL2_SUBCLUSTERS_PER_CLUSTER [Eric]
- Patch 13: Change bit order in the subcluster allocation bitmap [Max, Eric]
            Add more documentation.
            Ignore the subcluster bitmap in the L2 entries of
            compressed clusters.
- Patch 14: New patch
- Patch 15: Update to work with the changes from patches 02 and 14.
- Patch 16: Update to work with the changes from patches 02 and 14.
- Patch 18: Update to work with the changes from patches 02 and 14.
            Update documentation.
            Fix return value on early exit.
- Patch 20: Make sure to clear the subcluster allocation bitmap when a
            cluster is unallocated.
- Patch 26: Update to work with the changes from patch 14.
- Patch 27: New patch [Max]
- Patch 28: Update version number, incompatible bit number and test
            expectations.
- Patch 30: Add new tests.
            Make the test verify its own results. [Max]

v3: https://lists.gnu.org/archive/html/qemu-block/2019-12/msg00587.html
- Patch 01: Rename host_offset to host_cluster_offset and make 'bytes'
            an unsigned int [Max]
- Patch 03: Rename cluster_needs_cow to cluster_needs_new_alloc and
            count_cow_clusters to count_single_write_clusters. Update
            documentation and add more assertions and checks [Max]
- Patch 09: Update qcow2_co_truncate() to properly support extended L2
            entries [Max]
- Patch 10: Forbid calling set_l2_bitmap() if the image does not have
            extended L2 entries [Max]
- Patch 11 (new): Add QCow2SubclusterType [Max]
- Patch 12 (new): Replace QCOW2_CLUSTER_* with QCOW2_SUBCLUSTER_*
- Patch 13 (new): Handle QCOW2_SUBCLUSTER_UNALLOCATED_ALLOC
- Patch 14: Use QCow2SubclusterType instead of QCow2ClusterType [Max]
- Patch 15: Use QCow2SubclusterType instead of QCow2ClusterType [Max]
- Patch 19: Don't call set_l2_bitmap() if the image does not have
            extended L2 entries [Max]
- Patch 21: Use smaller data types.
- Patch 22: Don't call set_l2_bitmap() if the image does not have
            extended L2 entries [Max]
- Patch 23: Use smaller data types.
- Patch 25: Update test results and documentation. Move the check for
            the minimum subcluster size to validate_cluster_size().
- Patch 26 (new): Add subcluster support to qcow2_measure()
- Patch 27: Add more tests

v2: https://lists.gnu.org/archive/html/qemu-block/2019-10/msg01642.html
- Patch 12: Update after the changes in 88f468e546.
- Patch 21 (new): Clear the L2 bitmap when allocating a compressed
  cluster. Compressed clusters should have the bitmap all set to 0.
- Patch 24: Document the new fields in the QAPI documentation [Eric].
- Patch 25: Allow qcow2 preallocation with backing files.
- Patch 26: Add some tests for qcow2 images with extended L2 entries.

v1: https://lists.gnu.org/archive/html/qemu-block/2019-10/msg00983.html

Output of git backport-diff against v3:

Key:
[----] : patches are identical
[####] : number of functional differences between upstream/downstream patch
[down] : patch is downstream-only
The flags [FC] indicate (F)unctional and (C)ontextual differences, respectively

001/30:[down] 'qcow2: Make Qcow2AioTask store the full host offset'
002/30:[down] 'qcow2: Convert qcow2_get_cluster_offset() into qcow2_get_host_offset()'
003/30:[----] [-C] 'qcow2: Add calculate_l2_meta()'
004/30:[----] [--] 'qcow2: Split cluster_needs_cow() out of count_cow_clusters()'
005/30:[0020] [FC] 'qcow2: Process QCOW2_CLUSTER_ZERO_ALLOC clusters in handle_copied()'
006/30:[0010] [FC] 'qcow2: Add get_l2_entry() and set_l2_entry()'
007/30:[0020] [FC] 'qcow2: Document the Extended L2 Entries feature'
008/30:[----] [--] 'qcow2: Add dummy has_subclusters() function'
009/30:[0004] [FC] 'qcow2: Add subcluster-related fields to BDRVQcow2State'
010/30:[----] [--] 'qcow2: Add offset_to_sc_index()'
011/30:[----] [-C] 'qcow2: Add l2_entry_size()'
012/30:[----] [--] 'qcow2: Update get/set_l2_entry() and add get/set_l2_bitmap()'
013/30:[0046] [FC] 'qcow2: Add QCow2SubclusterType and qcow2_get_subcluster_type()'
014/30:[down] 'qcow2: Add cluster type parameter to qcow2_get_host_offset()'
015/30:[0082] [FC] 'qcow2: Replace QCOW2_CLUSTER_* with QCOW2_SUBCLUSTER_*'
016/30:[0002] [FC] 'qcow2: Handle QCOW2_SUBCLUSTER_UNALLOCATED_ALLOC'
017/30:[----] [-C] 'qcow2: Add subcluster support to calculate_l2_meta()'
018/30:[down] 'qcow2: Add subcluster support to qcow2_get_host_offset()'
019/30:[----] [--] 'qcow2: Add subcluster support to zero_in_l2_slice()'
020/30:[0012] [FC] 'qcow2: Add subcluster support to discard_in_l2_slice()'
021/30:[----] [--] 'qcow2: Add subcluster support to check_refcounts_l2()'
022/30:[----] [--] 'qcow2: Fix offset calculation in handle_dependencies()'
023/30:[----] [-C] 'qcow2: Update L2 bitmap in qcow2_alloc_cluster_link_l2()'
024/30:[----] [--] 'qcow2: Clear the L2 bitmap when allocating a compressed cluster'
025/30:[----] [--] 'qcow2: Add subcluster support to handle_alloc_space()'
026/30:[0006] [FC] 'qcow2: Restrict qcow2_co_pwrite_zeroes() to full clusters only'
027/30:[down] 'qcow2: Assert that expand_zero_clusters_in_l1() does not support subclusters'
028/30:[0019] [FC] 'qcow2: Add the 'extended_l2' option and the QCOW2_INCOMPAT_EXTL2 bit'
029/30:[----] [--] 'qcow2: Add subcluster support to qcow2_measure()'
030/30:[0313] [FC] 'iotests: Add tests for qcow2 images with extended L2 entries'

Alberto Garcia (30):
  qcow2: Make Qcow2AioTask store the full host offset
  qcow2: Convert qcow2_get_cluster_offset() into qcow2_get_host_offset()
  qcow2: Add calculate_l2_meta()
  qcow2: Split cluster_needs_cow() out of count_cow_clusters()
  qcow2: Process QCOW2_CLUSTER_ZERO_ALLOC clusters in handle_copied()
  qcow2: Add get_l2_entry() and set_l2_entry()
  qcow2: Document the Extended L2 Entries feature
  qcow2: Add dummy has_subclusters() function
  qcow2: Add subcluster-related fields to BDRVQcow2State
  qcow2: Add offset_to_sc_index()
  qcow2: Add l2_entry_size()
  qcow2: Update get/set_l2_entry() and add get/set_l2_bitmap()
  qcow2: Add QCow2SubclusterType and qcow2_get_subcluster_type()
  qcow2: Add cluster type parameter to qcow2_get_host_offset()
  qcow2: Replace QCOW2_CLUSTER_* with QCOW2_SUBCLUSTER_*
  qcow2: Handle QCOW2_SUBCLUSTER_UNALLOCATED_ALLOC
  qcow2: Add subcluster support to calculate_l2_meta()
  qcow2: Add subcluster support to qcow2_get_host_offset()
  qcow2: Add subcluster support to zero_in_l2_slice()
  qcow2: Add subcluster support to discard_in_l2_slice()
  qcow2: Add subcluster support to check_refcounts_l2()
  qcow2: Fix offset calculation in handle_dependencies()
  qcow2: Update L2 bitmap in qcow2_alloc_cluster_link_l2()
  qcow2: Clear the L2 bitmap when allocating a compressed cluster
  qcow2: Add subcluster support to handle_alloc_space()
  qcow2: Restrict qcow2_co_pwrite_zeroes() to full clusters only
  qcow2: Assert that expand_zero_clusters_in_l1() does not support
    subclusters
  qcow2: Add the 'extended_l2' option and the QCOW2_INCOMPAT_EXTL2 bit
  qcow2: Add subcluster support to qcow2_measure()
  iotests: Add tests for qcow2 images with extended L2 entries

 docs/interop/qcow2.txt           |  68 ++-
 docs/qcow2-cache.txt             |  19 +-
 qapi/block-core.json             |   7 +
 block/qcow2.h                    | 178 +++++++-
 include/block/block_int.h        |   1 +
 block/qcow2-cluster.c            | 696 ++++++++++++++++++++-----------
 block/qcow2-refcount.c           |  38 +-
 block/qcow2.c                    | 257 +++++++-----
 tests/qemu-iotests/031.out       |   8 +-
 tests/qemu-iotests/036.out       |   4 +-
 tests/qemu-iotests/049.out       | 102 ++---
 tests/qemu-iotests/060.out       |   1 +
 tests/qemu-iotests/061           |   6 +
 tests/qemu-iotests/061.out       |  25 +-
 tests/qemu-iotests/065           |  18 +-
 tests/qemu-iotests/082.out       |  48 ++-
 tests/qemu-iotests/085.out       |  38 +-
 tests/qemu-iotests/144.out       |   4 +-
 tests/qemu-iotests/182.out       |   2 +-
 tests/qemu-iotests/185.out       |   8 +-
 tests/qemu-iotests/198.out       |   2 +
 tests/qemu-iotests/206.out       |   4 +
 tests/qemu-iotests/242.out       |   5 +
 tests/qemu-iotests/255.out       |   8 +-
 tests/qemu-iotests/271           | 359 ++++++++++++++++
 tests/qemu-iotests/271.out       | 244 +++++++++++
 tests/qemu-iotests/280.out       |   2 +-
 tests/qemu-iotests/common.filter |   1 +
 tests/qemu-iotests/group         |   1 +
 29 files changed, 1682 insertions(+), 472 deletions(-)
 create mode 100755 tests/qemu-iotests/271
 create mode 100644 tests/qemu-iotests/271.out


--------------A5CF68F3F777D14038F772A9--