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b=NHtAmdk6SQvuA54x2ASckITnvOq5KPXmfL5OoIfqffzXbxJryAwOfTUTWY2KecdQEhOXeT QaVz+NHiEuKODDkVs70SUt3Bb9MTSN3OEFrzo9k1diloRhdvwQzllcI9C7PMr3oeZds1Ou 6qtj9hNtXVofyPcy2hCCE0KSBnhDoxQ= X-MC-Unique: dZhGlFGmNECynAA-e42BGg-1 From: Peter Krempa To: devel@lists.libvirt.org Subject: [PATCH 2/2] NEWS: mention zero detection for non-shared-storage migration Date: Thu, 10 Oct 2024 10:38:44 +0200 Message-ID: <7b5c1a3c64bfa36952201cf131f35f69211816b8.1728549495.git.pkrempa@redhat.com> In-Reply-To: References: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Message-ID-Hash: F7EYUPPXDBNSDGBXFMCPIMGIFTNVAF4X X-Message-ID-Hash: F7EYUPPXDBNSDGBXFMCPIMGIFTNVAF4X X-MailFrom: pkrempa@redhat.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-config-1; header-match-config-2; header-match-config-3; header-match-devel.lists.libvirt.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; suspicious-header X-Mailman-Version: 3.2.2 Precedence: list List-Id: Development discussions about the libvirt library & tools Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1728549588686116600 Content-Type: text/plain; charset="utf-8" Signed-off-by: Peter Krempa --- NEWS.rst | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/NEWS.rst b/NEWS.rst index 7f4f33c8f8..7a4a0e1d1f 100644 --- a/NEWS.rst +++ b/NEWS.rst @@ -17,6 +17,17 @@ v10.9.0 (unreleased) * **New features** + * qemu: zero block detection for non-shared-storage migration + + Users can now request that all-zero blocks are not transferred when mi= grating + non-shared disk data without actually enabling zero detection on the d= isk + itself. This allows sparsifying images during migration where the sour= ce + has no access to the allocation state of blocks at the cost of CPU ove= rhead. + + This feature is avaliable via the ``--migrate-disks-detect-zeroes`` op= tion + for ``virsh migrate`` or ``VIR_MIGRATE_PARAM_MIGRATE_DISKS_DETECT_ZERO= ES_ZEROES`` + migration parameter. See the documentation for caveats. + * **Improvements** * qemu: internal snapshot improvements --=20 2.47.0