From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============0289663760467009470==" MIME-Version: 1.0 From: Walker, Benjamin Subject: Re: [SPDK] Adding Namespaces dynamically Date: Tue, 21 Feb 2017 18:08:34 +0000 Message-ID: <1487700509.38737.26.camel@intel.com> In-Reply-To: CAGYjvj1xpTS4ifuLqv9rsm49ByE7vTmfJabworpBUoz1QdmJvQ@mail.gmail.com List-ID: To: spdk@lists.01.org --===============0289663760467009470== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable On Sat, 2017-02-18 at 21:16 +0530, Sriram Popuri wrote: > Hi experts, > = > = > =C2=A0 I am exploring spdk and particularly nvmf_tgt app. I would like to > know how we can add namespaces dynamically. > The app is reading from a conf file during initialization and doesn't > seem to have an option to add namespaces dynamically. > There is a way to add Namespace (spdk_nvmf_subsystem_add_ns), however > that seems to be only during initialization (either through conf or > rpc). The NVMe-oF target currently has two distinct modes for its subsystems - Direct and Virtual. We're working to unify these and make life a bit simpler for everyone, but for now we'll need to treat them separately. For direct mode, the subsystem exported is identical to a physical NVMe subsystem attached to the target system. We're just exporting a physical device over the network exactly as it is, with the absolute minimum amount of virtualization required by the NVMe-oF specification. All commands from the initiator simply pass through the NVMe-oF layer and are forwarded directly to the backing SSD. In this case, adding namespaces dynamically requires the backing NVMe SSD to support dynamic namespaces. If the SSD supports it, then it should[1] work today. For virtual mode, the NVMe-oF target is exporting a virtualized NVMe subsystem that may be backed by any type of device. This requires our target to emulate lots of functionality that the backing device may or may not actually support. Adding namespaces through the config file is only for virtual mode. We could of course emulate all of namespace management in virtual mode, and we definitely should, but the code to do this has not been implemented yet. = > Even if I invoke this api somehow, there are no AER commands > implemented or the relevant log pages (in this case: 04h - Changed > namespace list) so the host can discover the new namespace. 1. AER isn't emulated in virtual mode today, which is a problem. Even in direct mode AER isn't fully set up today, although we have someone working on this part now. > = > Is this in plan and if so when can we expect to see this coming? > = > Regards, > ~Sriram > _______________________________________________ > SPDK mailing list > SPDK(a)lists.01.org > https://lists.01.org/mailman/listinfo/spdk --===============0289663760467009470== Content-Type: application/x-pkcs7-signature MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIKdTCCBOsw ggPToAMCAQICEFLpAsoR6ESdlGU4L6MaMLswDQYJKoZIhvcNAQEFBQAwbzELMAkGA1UEBhMCU0Ux FDASBgNVBAoTC0FkZFRydXN0IEFCMSYwJAYDVQQLEx1BZGRUcnVzdCBFeHRlcm5hbCBUVFAgTmV0 d29yazEiMCAGA1UEAxMZQWRkVHJ1c3QgRXh0ZXJuYWwgQ0EgUm9vdDAeFw0xMzAzMTkwMDAwMDBa Fw0yMDA1MzAxMDQ4MzhaMHkxCzAJBgNVBAYTAlVTMQswCQYDVQQIEwJDQTEUMBIGA1UEBxMLU2Fu dGEgQ2xhcmExGjAYBgNVBAoTEUludGVsIENvcnBvcmF0aW9uMSswKQYDVQQDEyJJbnRlbCBFeHRl cm5hbCBCYXNpYyBJc3N1aW5nIENBIDRBMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA 4LDMgJ3YSVX6A9sE+jjH3b+F3Xa86z3LLKu/6WvjIdvUbxnoz2qnvl9UKQI3sE1zURQxrfgvtP0b Pgt1uDwAfLc6H5eqnyi+7FrPsTGCR4gwDmq1WkTQgNDNXUgb71e9/6sfq+WfCDpi8ScaglyLCRp7 ph/V60cbitBvnZFelKCDBh332S6KG3bAdnNGB/vk86bwDlY6omDs6/RsfNwzQVwo/M3oPrux6y6z yIoRulfkVENbM0/9RrzQOlyK4W5Vk4EEsfW2jlCV4W83QKqRccAKIUxw2q/HoHVPbbETrrLmE6RR Z/+eWlkGWl+mtx42HOgOmX0BRdTRo9vH7yeBowIDAQABo4IBdzCCAXMwHwYDVR0jBBgwFoAUrb2Y ejS0Jvf6xCZU7wO94CTLVBowHQYDVR0OBBYEFB5pKrTcKP5HGE4hCz+8rBEv8Jj1MA4GA1UdDwEB /wQEAwIBhjASBgNVHRMBAf8ECDAGAQH/AgEAMDYGA1UdJQQvMC0GCCsGAQUFBwMEBgorBgEEAYI3 CgMEBgorBgEEAYI3CgMMBgkrBgEEAYI3FQUwFwYDVR0gBBAwDjAMBgoqhkiG+E0BBQFpMEkGA1Ud HwRCMEAwPqA8oDqGOGh0dHA6Ly9jcmwudHJ1c3QtcHJvdmlkZXIuY29tL0FkZFRydXN0RXh0ZXJu YWxDQVJvb3QuY3JsMDoGCCsGAQUFBwEBBC4wLDAqBggrBgEFBQcwAYYeaHR0cDovL29jc3AudHJ1 c3QtcHJvdmlkZXIuY29tMDUGA1UdHgQuMCygKjALgQlpbnRlbC5jb20wG6AZBgorBgEEAYI3FAID oAsMCWludGVsLmNvbTANBgkqhkiG9w0BAQUFAAOCAQEAKcLNo/2So1Jnoi8G7W5Q6FSPq1fmyKW3 sSDf1amvyHkjEgd25n7MKRHGEmRxxoziPKpcmbfXYU+J0g560nCo5gPF78Wd7ZmzcmCcm1UFFfIx fw6QA19bRpTC8bMMaSSEl8y39Pgwa+HENmoPZsM63DdZ6ziDnPqcSbcfYs8qd/m5d22rpXq5IGVU tX6LX7R/hSSw/3sfATnBLgiJtilVyY7OGGmYKCAS2I04itvSS1WtecXTt9OZDyNbl7LtObBrgMLh ZkpJW+pOR9f3h5VG2S5uKkA7Th9NC9EoScdwQCAIw+UWKbSQ0Isj2UFL7fHKvmqWKVTL98sRzvI3 seNC4DCCBYIwggRqoAMCAQICEzMAAIu5Kz5Fe8d0qN0AAAAAi7kwDQYJKoZIhvcNAQEFBQAweTEL MAkGA1UEBhMCVVMxCzAJBgNVBAgTAkNBMRQwEgYDVQQHEwtTYW50YSBDbGFyYTEaMBgGA1UEChMR SW50ZWwgQ29ycG9yYXRpb24xKzApBgNVBAMTIkludGVsIEV4dGVybmFsIEJhc2ljIElzc3Vpbmcg Q0EgNEEwHhcNMTcwMTA5MjEyMzU4WhcNMTgwMTA0MjEyMzU4WjBFMRkwFwYDVQQDExBXYWxrZXIs IEJlbmphbWluMSgwJgYJKoZIhvcNAQkBFhliZW5qYW1pbi53YWxrZXJAaW50ZWwuY29tMIIBIjAN BgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxFugJYk4Vd/Yvdmr8BdnGDdCkN1bc1KNCAQBhzC/ BWXw5nxpXWMYFBkTxahM78PtuwdtPDFqoHsMNEaX0miWeYjB6zKbKl7y0LEsSxlu9wjllEdWTYOP 9/m3UC0oITDn7L01adbsD5Sin6W1FMmjcBVrD51oy2orpwfvan3TNVRRQxt8dQz38hivXnona5tt toi+V8ved7o251HApvEwW7QtDfdML+RmBKBSf0MzGjZHPzoBfRrsBUZ0yRHJxlkYNeY99EAUUHwT npsySQSf0cxLmvA6/a4qPOUSitHit+cJQ58/EOt6PLrPGAbdu5sz9O+Iv+FUJakwUtg0sAY4RQID AQABo4ICNTCCAjEwHQYDVR0OBBYEFAU2hsr+3sx/M5e5WafmYD18VvX1MB8GA1UdIwQYMBaAFB5p KrTcKP5HGE4hCz+8rBEv8Jj1MGUGA1UdHwReMFwwWqBYoFaGVGh0dHA6Ly93d3cuaW50ZWwuY29t L3JlcG9zaXRvcnkvQ1JML0ludGVsJTIwRXh0ZXJuYWwlMjBCYXNpYyUyMElzc3VpbmclMjBDQSUy MDRBLmNybDCBnwYIKwYBBQUHAQEEgZIwgY8waQYIKwYBBQUHMAKGXWh0dHA6Ly93d3cuaW50ZWwu Y29tL3JlcG9zaXRvcnkvY2VydGlmaWNhdGVzL0ludGVsJTIwRXh0ZXJuYWwlMjBCYXNpYyUyMElz c3VpbmclMjBDQSUyMDRBLmNydDAiBggrBgEFBQcwAYYWaHR0cDovL29jc3AuaW50ZWwuY29tLzAL BgNVHQ8EBAMCB4AwPAYJKwYBBAGCNxUHBC8wLQYlKwYBBAGCNxUIhsOMdYSZ5VGD/YEohY6fU4KR wAlngd69OZXwQwIBZAIBCTAfBgNVHSUEGDAWBggrBgEFBQcDBAYKKwYBBAGCNwoDDDApBgkrBgEE AYI3FQoEHDAaMAoGCCsGAQUFBwMEMAwGCisGAQQBgjcKAwwwTwYDVR0RBEgwRqApBgorBgEEAYI3 FAIDoBsMGWJlbmphbWluLndhbGtlckBpbnRlbC5jb22BGWJlbmphbWluLndhbGtlckBpbnRlbC5j b20wDQYJKoZIhvcNAQEFBQADggEBAMQUzXgrfwDLl92M7wNqp24Xe1poeurJ8YVAy5a2UukwC/uX uXE8Duoz2jMJL90QETn17H7EQQu1J7kc059H6GyDU42MkzPA3mqZQimrTgOaalPXxWXoVl/UUoLB PJZXGF3Ef1p8b1UVdSnZZ8wTD/QTUw7UhgljKZ1td/raLV1h96x6lKCVkZ0UKU8be5M3FHQ/GZJ9 CgUjvN0m2mYOUHDkNzsUTJb4bsV7vZDa3zixm4Gxu2F/uq328AEJ6JJmXA+jjFOzQ0FI8sa7XOSR 1UPvZSrwyA00M/zFZaDTln+sFPFNseYYGYFU7P711D8Wj1Hv1V/C2G4rSRBJG5f1WF8xggIXMIIC EwIBATCBkDB5MQswCQYDVQQGEwJVUzELMAkGA1UECBMCQ0ExFDASBgNVBAcTC1NhbnRhIENsYXJh MRowGAYDVQQKExFJbnRlbCBDb3Jwb3JhdGlvbjErMCkGA1UEAxMiSW50ZWwgRXh0ZXJuYWwgQmFz aWMgSXNzdWluZyBDQSA0QQITMwAAi7krPkV7x3So3QAAAACLuTAJBgUrDgMCGgUAoF0wGAYJKoZI hvcNAQkDMQsGCSqGSIb3DQEHATAcBgkqhkiG9w0BCQUxDxcNMTcwMjIxMTgwODI5WjAjBgkqhkiG 9w0BCQQxFgQUu/fyL4eYfuTCcMEoEwcX9sQQCtUwDQYJKoZIhvcNAQEBBQAEggEAUb+GgvYSUMyn CZacrnBERW0W8YXOzhW3+kGuHrXWbJps6h6PfbcQuXEha6IefXC7+hO1EJtoYqn2hNqAHiajQ9mo 28uTCettHyBX6O/OyDDQIryUrVmYkUbMJriPSIwV9a+YwKK6w4hyIf7hm7ufFf5eCbBMzz6bwP4M JbnmBPzc9gwO0R76nmwtbYF5up6Q7C7YzCth6c/W2qgSaj/nDLy0p+m5bhqXolJahYiTigQGtBZY WYntrv/YmngLF4GCvO5YV/ROXFSgmvPy+pHRw1S6rqsQy4Tv3bP2jQNz3LQTl5a22sQ+TFcW7/zu qLHvX6I42MohaseTO3Beju5udAAAAAAAAA== --===============0289663760467009470==--