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Tsirkin" , Jason Wang , Alex Williamson , Cedric Le Goater , Gerd Hoffmann , Marc-Andre Lureau , David Hildenbrand Subject: Re: [PATCH V4 14/14] migration: options incompatible with cpr In-Reply-To: <2089875c-17fd-4148-ba3b-6a0283d4ea3f@oracle.com> (Steven Sistare's message of "Wed, 28 Feb 2024 11:31:49 -0500") References: <1708622920-68779-1-git-send-email-steven.sistare@oracle.com> <1708622920-68779-15-git-send-email-steven.sistare@oracle.com> <87cysh3vg0.fsf@pond.sub.org> <87il28vajw.fsf@pond.sub.org> <2089875c-17fd-4148-ba3b-6a0283d4ea3f@oracle.com> Date: Thu, 29 Feb 2024 06:31:26 +0100 Message-ID: <87il27u98x.fsf@pond.sub.org> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.6 Received-SPF: pass client-ip=170.10.133.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.102, 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, 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Steven Sistare writes: > On 2/28/2024 11:05 AM, Markus Armbruster wrote: >> Steven Sistare writes: >> >>> On 2/28/2024 2:21 AM, Markus Armbruster wrote: >>>> Steve Sistare writes: >>>> >>>>> Fail the migration request if options are set that are incompatible >>>>> with cpr. >>>>> >>>>> Signed-off-by: Steve Sistare >> >> [...] >> >>>>> diff --git a/qapi/migration.json b/qapi/migration.json >>>>> index 0990297..c6bfe2e 100644 >>>>> --- a/qapi/migration.json >>>>> +++ b/qapi/migration.json >>>>> @@ -657,6 +657,8 @@ >>>>> # shared backend must be be non-volatile across reboot, such as by backing >>>>> # it with a dax device. >>>>> # >>>>> +# cpr-reboot may not be used with postcopy, colo, or background-snapshot. >>>>> +# >>>> >>>> @cpr-reboot >>>> >>>> COLO >>>> >>>> Wrap the line: >>>> >>>> # @cpr-reboot may not be used with postcopy, COLO, or >>>> # background-snapshot. >>>> >>>> This doesn't tell the reader what settings exactly do not work with >>>> @cpr-reboot. >>>> >>>> For instance "background-snapshot" is about enabling migration >>>> capability @background-snapshot. We could write something like "is >>>> incompatible with enabling migration capability @background-snapshot". >>>> >>>> Same for the other two. Worthwhile? >>> >>> I initially was more precise exactly as you suggest, but I realized that >>> postcopy encompasses multiple capabilities, and I did not want to enumerate >>> them, nor require new capabilities related to these 3 to be listed here >>> if/when they are created, so I generalized. A keyword search in this file >>> gives unambiguous matches. >>> >>> Peter pushed the patch a few hours before you sent this. >> >> Okay. >> >> A followup patch to correct @cpr-reboot, COLO and line wrapping would be >> nice. > > Will do - steve Hmm, perhaps Peter can still squash in the corrections before posting his PR. Peter?