From mboxrd@z Thu Jan 1 00:00:00 1970 From: Doug Ledford Subject: Re: Reconnect on RDMA device reset Date: Tue, 30 Jan 2018 12:24:56 -0500 Message-ID: <1517333096.27592.281.camel@redhat.com> References: <77cef33e-a563-97fc-7ba6-69f220f1be84@grimberg.me> <1516904022.27592.187.camel@redhat.com> <26056a83-2f81-6b56-7bbf-fcecfc4518d6@grimberg.me> <1517264899.27592.277.camel@redhat.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-DuloOnT5pRviJPQFfjVg" Return-path: In-Reply-To: Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Oren Duer Cc: Sagi Grimberg , linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , Oren Duer List-Id: linux-rdma@vger.kernel.org --=-DuloOnT5pRviJPQFfjVg Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, 2018-01-30 at 17:03 +0200, Oren Duer wrote: > Not sure why we need to keep track whether it is the same device or not. > I fail to understand why we trust the system admin to create the connecti= ons > at the beginning, but we should not trust him anymore if the device was > removed, a new device was added in place of it, and it was configured wit= h the > same network IP/subnet. To me it looks like the admin wanted exactly that= : > for the connections to be restored over the new device. In my original email, I pointed out that I didn't know how the NVMe over Fabrics was doing addressing. If it were like SRP, then it wouldn't work because the device GUID is part of the addressing scheme, so a new device wouldn't automatically show as matching that address. If, however, you use IP like iSER, then yes, I agree fully you can just test the ability to route over the new device using the IP address and restore if it works. --=20 Doug Ledford GPG KeyID: B826A3330E572FDD Key fingerprint =3D AE6B 1BDA 122B 23B4 265B 1274 B826 A333 0E57 2FDD --=-DuloOnT5pRviJPQFfjVg Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEErmsb2hIrI7QmWxJ0uCajMw5XL90FAlpwqmgACgkQuCajMw5X L90yyQ//TmMaOY88J99fcbjqmLLCh2kIDz6nAiTeMNVSediNmKZPnqX3GX89fJRp JHugc2RmRp4vcKSK5Mwp4z32q0BV8tNQz0iKrPrIr/+maqbpt+8sQFdh469psCYX HYnjtur0dDkyk4kvkW5X2/cEoyuNdXV0GJIvU9v598lM/YhK9zwMT/4hzppU4q+S rCtKkxM1r6qHgGcFsgNL1VJqk0jiAxiUa4MzKka+BFaMSmgbDttEKbm6RPgdcFOq 1SgsESe+q0da/1PckCczoajr6bXZjPP9xAfGiSfqAzIg08kdXj6pFcmuFwDKFhy3 VyXTRRlDjrXOUjUByojngkmBzjwsy5MsyC1GRMq4OyyEymU2LCqJbyxKh+E073vb WJAvYsGJYBh26XlcyZETRLkd73hFLua6qRYVya1VhA/vAPiPoJhVzjvqh7KPoA7L D+i/KwlWWy4V77O1ERVmRNlx7tCwHSWo/4S2TZdtNZadkBAyhJY8qTosBrm4hHlx uBIKitt/h3Q20MQruMNCcDDcWixnQDfH6IxFoKA5XsEMVsdL5hkVE7FltRIBUCzF 4M+R9YXYb5qN82gbkBtm43JNtmbgQ76cdBGSlBXmH7eJ30UIHIFJYr6es0gQlQlj pNvRFib2wdi9tedjZgAA7oEKjonywJXnBIl0HhDwuqADWmLrgxE= =yr5E -----END PGP SIGNATURE----- --=-DuloOnT5pRviJPQFfjVg-- -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html