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Thu, 7 May 2020 14:48:12 +0000 (UTC) Date: Thu, 7 May 2020 15:48:09 +0100 From: "Dr. David Alan Gilbert" To: =?iso-8859-1?Q?Marc-Andr=E9?= Lureau Subject: Re: [PATCH] docs/devel/migration: start a debugging section Message-ID: <20200507144809.GC17348@work-vm> References: <20200330174852.456148-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 In-Reply-To: <20200330174852.456148-1-marcandre.lureau@redhat.com> User-Agent: Mutt/1.13.4 (2020-02-15) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Received-SPF: pass client-ip=207.211.31.120; envelope-from=dgilbert@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/07 03:56:18 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=0.001, 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_H2=-0.001, SPF_PASS=-0.001, T_HK_NAME_DR=0.01, URIBL_BLOCKED=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: qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" * Marc-Andr=E9 Lureau (marcandre.lureau@redhat.com) wrote: > Explain how to use analyze-migration.py, this may help. >=20 > Signed-off-by: Marc-Andr=E9 Lureau Queued > --- > docs/devel/migration.rst | 20 ++++++++++++++++++++ > 1 file changed, 20 insertions(+) >=20 > diff --git a/docs/devel/migration.rst b/docs/devel/migration.rst > index e88918f7639..2eb08624fc3 100644 > --- a/docs/devel/migration.rst > +++ b/docs/devel/migration.rst > @@ -50,6 +50,26 @@ All these migration protocols use the same infrastruct= ure to > save/restore state devices. This infrastructure is shared with the > savevm/loadvm functionality. > =20 > +Debugging > +=3D=3D=3D=3D=3D=3D=3D=3D=3D > + > +The migration stream can be analyzed thanks to `scripts/analyze_migratio= n.py`. > + > +Example usage: > + > +.. code-block:: shell > + > + $ qemu-system-x86_64 > + (qemu) migrate "exec:cat > mig" > + $ ./scripts/analyze_migration.py -f mig > + { > + "ram (3)": { > + "section sizes": { > + "pc.ram": "0x0000000008000000", > + ... > + > +See also ``analyze_migration.py -h`` help for more options. > + > Common infrastructure > =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > =20 > --=20 > 2.26.0.rc2.42.g98cedd0233 >=20 >=20 -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK