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Tue, 20 Feb 2024 19:37:03 -0800 (PST) From: Hyman Huang To: qemu-devel@nongnu.org Cc: Markus Armbruster , Kevin Wolf , Hanna Reitz , Eric Blake , yong.huang@smartx.com Subject: [PATCH] qapi: Craft the BlockdevCreateOptionsLUKS comment Date: Wed, 21 Feb 2024 11:36:58 +0800 Message-Id: <91c52e03e46ff0a96559b4e7d66ded582b2ec4e1.1708486450.git.yong.huang@smartx.com> X-Mailer: git-send-email 2.39.3 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: none client-ip=2607:f8b0:4864:20::42d; envelope-from=yong.huang@smartx.com; helo=mail-pf1-x42d.google.com 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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001, T_SCC_BODY_TEXT_LINE=-0.01 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: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @smartx-com.20230601.gappssmtp.com) X-ZM-MESSAGEID: 1708486797826100003 Content-Type: text/plain; charset="utf-8" Add comment in detail for commit 433957bb7f (qapi: Make parameter 'file' optional for BlockdevCreateOptionsLUKS). Signed-off-by: Hyman Huang --- qapi/block-core.json | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/qapi/block-core.json b/qapi/block-core.json index ab5a93a966..42b0840d43 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -4973,7 +4973,25 @@ ## # @BlockdevCreateOptionsLUKS: # -# Driver specific image creation options for LUKS. +# Driver specific image creation options for LUKS. Note that +# @file is required if @preallocation is specified and equals +# PREALLOC_MODE_ON. The following three scenarios determine how +# creation logic behaves when @preallocation is either equal to +# PREALLOC_MODE_OFF or is not given: +# +# 1) When @file is given only, format the block device referenced +# by @file as the LUKS specification and trunk it to the @size. +# In this case, the @size should reflect amount of space made +# available to the guest, so the trunk size must take account +# of that which will be used by the crypto header. +# +# 2) When @header is given only, just format the block device +# referenced by @header as the LUKS specification. +# +# 3) When both @file and @header are given, block device +# referenced by @file should be trunked to @size, and block +# device referenced by @header should be formatted as the LUKS +# specification. # # @file: Node to create the image format on, mandatory except when # 'preallocation' is not requested --=20 2.39.3