From patchwork Fri Jun 12 00:04:54 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Shinkevich X-Patchwork-Id: 280660 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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham 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 6D814C433DF for ; Fri, 12 Jun 2020 00:06:24 +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 45D0A20878 for ; Fri, 12 Jun 2020 00:06:24 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 45D0A20878 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=virtuozzo.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:36882 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jjXDD-00023E-Eu for qemu-devel@archiver.kernel.org; Thu, 11 Jun 2020 20:06:23 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:56578) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jjXC2-0008Lj-8u; Thu, 11 Jun 2020 20:05:10 -0400 Received: from relay.sw.ru ([185.231.240.75]:52852 helo=relay3.sw.ru) by eggs.gnu.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jjXBy-0006IE-Jd; Thu, 11 Jun 2020 20:05:09 -0400 Received: from [172.16.25.136] (helo=localhost.sw.ru) by relay3.sw.ru with esmtp (Exim 4.93) (envelope-from ) id 1jjXBr-0002Yd-H4; Fri, 12 Jun 2020 03:04:59 +0300 From: Andrey Shinkevich To: qemu-block@nongnu.org Subject: [PATCH v7 1/9] iotests: Fix for magic hexadecimal output in 291 Date: Fri, 12 Jun 2020 03:04:54 +0300 Message-Id: <1591920302-1002219-2-git-send-email-andrey.shinkevich@virtuozzo.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1591920302-1002219-1-git-send-email-andrey.shinkevich@virtuozzo.com> References: <1591920302-1002219-1-git-send-email-andrey.shinkevich@virtuozzo.com> Received-SPF: pass client-ip=185.231.240.75; envelope-from=andrey.shinkevich@virtuozzo.com; helo=relay3.sw.ru X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/11 20:05:03 X-ACL-Warn: Detected OS = Linux 3.11 and newer X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN 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, vsementsov@virtuozzo.com, qemu-devel@nongnu.org, mreitz@redhat.com, andrey.shinkevich@virtuozzo.com, den@openvz.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This issue was introduced in the earlier patch: "qcow2_format: refactor QcowHeaderExtension as a subclass of Qcow2Struct". Signed-off-by: Andrey Shinkevich --- tests/qemu-iotests/291.out | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/tests/qemu-iotests/291.out b/tests/qemu-iotests/291.out index 1d4f9cd..ccfcdc5 100644 --- a/tests/qemu-iotests/291.out +++ b/tests/qemu-iotests/291.out @@ -16,17 +16,17 @@ wrote 1048576/1048576 bytes at offset 2097152 1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) Check resulting qcow2 header extensions: Header extension: -magic 3799591626 (Backing format) +magic 0xe2792aca (Backing format) length 5 data 'qcow2' Header extension: -magic 1745090647 (Feature table) +magic 0x6803f857 (Feature table) length 336 data Header extension: -magic 595929205 (Bitmaps) +magic 0x23852875 (Bitmaps) length 24 nb_bitmaps 2 reserved32 0 @@ -86,12 +86,12 @@ Format specific information: corrupt: false Check resulting qcow2 header extensions: Header extension: -magic 1745090647 (Feature table) +magic 0x6803f857 (Feature table) length 336 data Header extension: -magic 595929205 (Bitmaps) +magic 0x23852875 (Bitmaps) length 24 nb_bitmaps 3 reserved32 0 From patchwork Fri Jun 12 00:04:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Shinkevich X-Patchwork-Id: 280658 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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham 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 23430C433DF for ; Fri, 12 Jun 2020 00:08:40 +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 E2D6020835 for ; Fri, 12 Jun 2020 00:08:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E2D6020835 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=virtuozzo.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:46776 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jjXFO-0006ZB-Ts for qemu-devel@archiver.kernel.org; Thu, 11 Jun 2020 20:08:38 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:56638) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jjXC3-0008Mw-Hy; Thu, 11 Jun 2020 20:05:11 -0400 Received: from relay.sw.ru ([185.231.240.75]:52848 helo=relay3.sw.ru) by eggs.gnu.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jjXBy-0006I9-Oh; Thu, 11 Jun 2020 20:05:11 -0400 Received: from [172.16.25.136] (helo=localhost.sw.ru) by relay3.sw.ru with esmtp (Exim 4.93) (envelope-from ) id 1jjXBr-0002Yd-IP; Fri, 12 Jun 2020 03:04:59 +0300 From: Andrey Shinkevich To: qemu-block@nongnu.org Subject: [PATCH v7 2/9] qcow2: Fix capitalization of header extension constant. Date: Fri, 12 Jun 2020 03:04:55 +0300 Message-Id: <1591920302-1002219-3-git-send-email-andrey.shinkevich@virtuozzo.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1591920302-1002219-1-git-send-email-andrey.shinkevich@virtuozzo.com> References: <1591920302-1002219-1-git-send-email-andrey.shinkevich@virtuozzo.com> Received-SPF: pass client-ip=185.231.240.75; envelope-from=andrey.shinkevich@virtuozzo.com; helo=relay3.sw.ru X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/11 20:05:03 X-ACL-Warn: Detected OS = Linux 3.11 and newer X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN 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, vsementsov@virtuozzo.com, qemu-devel@nongnu.org, mreitz@redhat.com, andrey.shinkevich@virtuozzo.com, den@openvz.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Make the capitalization of the hexadecimal numbers consistent for the QCOW2 header extension constants in docs/interop/qcow2.txt. Suggested-by: Eric Blake Signed-off-by: Andrey Shinkevich --- block/qcow2.c | 2 +- docs/interop/qcow2.txt | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/block/qcow2.c b/block/qcow2.c index 0cd2e67..80dfe5f 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -66,7 +66,7 @@ typedef struct { } QEMU_PACKED QCowExtension; #define QCOW2_EXT_MAGIC_END 0 -#define QCOW2_EXT_MAGIC_BACKING_FORMAT 0xE2792ACA +#define QCOW2_EXT_MAGIC_BACKING_FORMAT 0xe2792aca #define QCOW2_EXT_MAGIC_FEATURE_TABLE 0x6803f857 #define QCOW2_EXT_MAGIC_CRYPTO_HEADER 0x0537be77 #define QCOW2_EXT_MAGIC_BITMAPS 0x23852875 diff --git a/docs/interop/qcow2.txt b/docs/interop/qcow2.txt index cb72346..f072e27 100644 --- a/docs/interop/qcow2.txt +++ b/docs/interop/qcow2.txt @@ -231,7 +231,7 @@ be stored. Each extension has a structure like the following: Byte 0 - 3: Header extension type: 0x00000000 - End of the header extension area - 0xE2792ACA - Backing file format name string + 0xe2792aca - Backing file format name string 0x6803f857 - Feature name table 0x23852875 - Bitmaps extension 0x0537be77 - Full disk encryption header pointer From patchwork Fri Jun 12 00:04:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Shinkevich X-Patchwork-Id: 280657 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=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 9F29FC433DF for ; Fri, 12 Jun 2020 00:09:57 +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 66C8D20835 for ; Fri, 12 Jun 2020 00:09:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 66C8D20835 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=virtuozzo.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:52106 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jjXGe-0000u1-MJ for qemu-devel@archiver.kernel.org; Thu, 11 Jun 2020 20:09:56 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:56648) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jjXC3-0008NP-Pg; Thu, 11 Jun 2020 20:05:11 -0400 Received: from relay.sw.ru ([185.231.240.75]:52838 helo=relay3.sw.ru) by eggs.gnu.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jjXBy-0006IB-Oy; Thu, 11 Jun 2020 20:05:11 -0400 Received: from [172.16.25.136] (helo=localhost.sw.ru) by relay3.sw.ru with esmtp (Exim 4.93) (envelope-from ) id 1jjXBr-0002Yd-Lz; Fri, 12 Jun 2020 03:04:59 +0300 From: Andrey Shinkevich To: qemu-block@nongnu.org Subject: [PATCH v7 5/9] qcow2_format.py: pass cluster size to substructures Date: Fri, 12 Jun 2020 03:04:58 +0300 Message-Id: <1591920302-1002219-6-git-send-email-andrey.shinkevich@virtuozzo.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1591920302-1002219-1-git-send-email-andrey.shinkevich@virtuozzo.com> References: <1591920302-1002219-1-git-send-email-andrey.shinkevich@virtuozzo.com> Received-SPF: pass client-ip=185.231.240.75; envelope-from=andrey.shinkevich@virtuozzo.com; helo=relay3.sw.ru X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/11 20:05:03 X-ACL-Warn: Detected OS = Linux 3.11 and newer X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN 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, vsementsov@virtuozzo.com, qemu-devel@nongnu.org, mreitz@redhat.com, andrey.shinkevich@virtuozzo.com, den@openvz.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The cluster size of an image is the QcowHeader class member and may be obtained by dependent extension structures such as Qcow2BitmapExt for further bitmap table details print. Signed-off-by: Andrey Shinkevich --- tests/qemu-iotests/qcow2_format.py | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/tests/qemu-iotests/qcow2_format.py b/tests/qemu-iotests/qcow2_format.py index 90eff92..eb99119 100644 --- a/tests/qemu-iotests/qcow2_format.py +++ b/tests/qemu-iotests/qcow2_format.py @@ -116,6 +116,10 @@ class Qcow2BitmapExt(Qcow2Struct): ('u64', '{:#x}', 'bitmap_directory_offset') ) + def __init__(self, data, cluster_size): + super().__init__(data=data) + self.cluster_size = cluster_size + def read_bitmap_directory(self, fd): self.bitmaps = [] fd.seek(self.bitmap_directory_offset) @@ -123,7 +127,8 @@ class Qcow2BitmapExt(Qcow2Struct): for n in range(self.nb_bitmaps): buf = fd.read(buf_size) - dir_entry = Qcow2BitmapDirEntry(data=buf) + dir_entry = Qcow2BitmapDirEntry(data=buf, + cluster_size=self.cluster_size) fd.seek(dir_entry.extra_data_size, FROM_CURRENT) bitmap_name = fd.read(dir_entry.name_size) dir_entry.name = bitmap_name.decode('ascii') @@ -159,8 +164,9 @@ class Qcow2BitmapDirEntry(Qcow2Struct): ('u32', '{}', 'extra_data_size') ) - def __init__(self, data): + def __init__(self, data, cluster_size): super().__init__(data=data) + self.cluster_size = cluster_size self.bitmap_table_bytes = self.bitmap_table_size \ * struct.calcsize('Q') @@ -205,11 +211,13 @@ class QcowHeaderExtension(Qcow2Struct): # then padding to next multiply of 8 ) - def __init__(self, magic=None, length=None, data=None, fd=None): + def __init__(self, magic=None, length=None, data=None, fd=None, + cluster_size=None): """ Support both loading from fd and creation from user data. For fd-based creation current position in a file will be used to read the data. + The cluster_size value may be obtained by dependent structures. This should be somehow refactored and functionality should be moved to superclass (to allow creation of any qcow2 struct), but then, fields @@ -243,7 +251,8 @@ class QcowHeaderExtension(Qcow2Struct): self.data_str = data_str if self.magic == QCOW2_EXT_MAGIC_BITMAPS: - self.obj = Qcow2BitmapExt(data=self.data) + self.obj = Qcow2BitmapExt(data=self.data, + cluster_size=cluster_size) else: self.obj = None @@ -318,7 +327,7 @@ class QcowHeader(Qcow2Struct): end = self.cluster_size while fd.tell() < end: - ext = QcowHeaderExtension(fd=fd) + ext = QcowHeaderExtension(fd=fd, cluster_size=self.cluster_size) if ext.magic == 0: break else: From patchwork Fri Jun 12 00:05:00 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Shinkevich X-Patchwork-Id: 280661 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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham 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 0BA6CC433E0 for ; Fri, 12 Jun 2020 00:06:23 +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 D2FE520835 for ; Fri, 12 Jun 2020 00:06:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D2FE520835 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=virtuozzo.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:36702 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jjXDB-0001yp-V1 for qemu-devel@archiver.kernel.org; Thu, 11 Jun 2020 20:06:22 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:56588) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jjXC2-0008Lr-ER; Thu, 11 Jun 2020 20:05:10 -0400 Received: from relay.sw.ru ([185.231.240.75]:52837 helo=relay3.sw.ru) by eggs.gnu.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jjXBy-0006IA-K0; Thu, 11 Jun 2020 20:05:10 -0400 Received: from [172.16.25.136] (helo=localhost.sw.ru) by relay3.sw.ru with esmtp (Exim 4.93) (envelope-from ) id 1jjXBr-0002Yd-OG; Fri, 12 Jun 2020 03:04:59 +0300 From: Andrey Shinkevich To: qemu-block@nongnu.org Subject: [PATCH v7 7/9] qcow2.py: Introduce '-j' key to dump in JSON format Date: Fri, 12 Jun 2020 03:05:00 +0300 Message-Id: <1591920302-1002219-8-git-send-email-andrey.shinkevich@virtuozzo.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1591920302-1002219-1-git-send-email-andrey.shinkevich@virtuozzo.com> References: <1591920302-1002219-1-git-send-email-andrey.shinkevich@virtuozzo.com> Received-SPF: pass client-ip=185.231.240.75; envelope-from=andrey.shinkevich@virtuozzo.com; helo=relay3.sw.ru X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/11 20:05:03 X-ACL-Warn: Detected OS = Linux 3.11 and newer X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN 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, vsementsov@virtuozzo.com, qemu-devel@nongnu.org, mreitz@redhat.com, andrey.shinkevich@virtuozzo.com, den@openvz.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Add the command key to the qcow2.py arguments list to dump QCOW2 metadata in JSON format. Here is the suggested way to do that. The implementation of the dump in JSON format is in the patch that follows. Signed-off-by: Andrey Shinkevich --- tests/qemu-iotests/qcow2.py | 20 +++++++++++++++----- tests/qemu-iotests/qcow2_format.py | 18 +++++++++--------- 2 files changed, 24 insertions(+), 14 deletions(-) diff --git a/tests/qemu-iotests/qcow2.py b/tests/qemu-iotests/qcow2.py index 8c187e9..b08d8fc 100755 --- a/tests/qemu-iotests/qcow2.py +++ b/tests/qemu-iotests/qcow2.py @@ -24,16 +24,19 @@ from qcow2_format import ( ) +dump_json = False + + def cmd_dump_header(fd): h = QcowHeader(fd) - h.dump() + h.dump(dump_json) print() - h.dump_extensions() + h.dump_extensions(dump_json) def cmd_dump_header_exts(fd): h = QcowHeader(fd) - h.dump_extensions() + h.dump_extensions(dump_json) def cmd_set_header(fd, name, value): @@ -132,6 +135,11 @@ cmds = [ def main(filename, cmd, args): + global dump_json + dump_json = '-j' in sys.argv + if dump_json: + sys.argv.remove('-j') + args.remove('-j') fd = open(filename, "r+b") try: for name, handler, num_args, desc in cmds: @@ -149,12 +157,14 @@ def main(filename, cmd, args): def usage(): - print("Usage: %s [, ...]" % sys.argv[0]) + print("Usage: %s [, ...] [, ...]" % sys.argv[0]) print("") print("Supported commands:") for name, handler, num_args, desc in cmds: print(" %-20s - %s" % (name, desc)) - + print("") + print("Supported keys:") + print(" %-20s - %s" % ('-j', 'Dump in JSON format')) if __name__ == '__main__': if len(sys.argv) < 3: diff --git a/tests/qemu-iotests/qcow2_format.py b/tests/qemu-iotests/qcow2_format.py index c1c2773..a19f3b3 100644 --- a/tests/qemu-iotests/qcow2_format.py +++ b/tests/qemu-iotests/qcow2_format.py @@ -92,7 +92,7 @@ class Qcow2Struct(metaclass=Qcow2StructMeta): self.__dict__ = dict((field[2], values[i]) for i, field in enumerate(self.fields)) - def dump(self): + def dump(self, dump_json=None): for f in self.fields: value = self.__dict__[f[2]] if isinstance(f[1], str): @@ -143,10 +143,10 @@ class Qcow2BitmapExt(Qcow2Struct): def load(self, fd): self.read_bitmap_directory(fd) - def dump(self): - super().dump() + def dump(self, dump_json=None): + super().dump(dump_json) for bm in self.bitmaps: - bm.dump_bitmap_dir_entry() + bm.dump_bitmap_dir_entry(dump_json) BME_FLAG_IN_USE = 1 << 0 @@ -190,7 +190,7 @@ class Qcow2BitmapDirEntry(Qcow2Struct): table = [e[0] for e in struct.iter_unpack('>Q', fd.read(table_size))] self.bitmap_table = Qcow2BitmapTable(table) - def dump_bitmap_dir_entry(self): + def dump_bitmap_dir_entry(self, dump_json=None): print() print(f'{"Bitmap name":<25} {self.name}') for fl in self.bitmap_flags: @@ -296,13 +296,13 @@ class QcowHeaderExtension(Qcow2Struct): else: self.obj = None - def dump(self): + def dump(self, dump_json=None): super().dump() if self.obj is None: print(f'{"data":<25} {self.data_str}') else: - self.obj.dump() + self.obj.dump(dump_json) @classmethod def create(cls, magic, data): @@ -405,8 +405,8 @@ class QcowHeader(Qcow2Struct): buf = buf[0:header_bytes-1] fd.write(buf) - def dump_extensions(self): + def dump_extensions(self, dump_json=None): for ex in self.extensions: print('Header extension:') - ex.dump() + ex.dump(dump_json) print()