From owner-freebsd-hackers@freebsd.org Fri Jun 26 04:01:36 2020 Return-Path: Delivered-To: freebsd-hackers@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id A730634D08B for ; Fri, 26 Jun 2020 04:01:36 +0000 (UTC) (envelope-from ekraju@gmail.com) Received: from mail-yb1-xb34.google.com (mail-yb1-xb34.google.com [IPv6:2607:f8b0:4864:20::b34]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 49tNVS0B2Nz41mQ for ; Fri, 26 Jun 2020 04:01:35 +0000 (UTC) (envelope-from ekraju@gmail.com) Received: by mail-yb1-xb34.google.com with SMTP id o4so3845303ybp.0 for ; Thu, 25 Jun 2020 21:01:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=1mEzNkfOALgQf97AIhavpVqd6mi7skgR7v1hkZ7AP2U=; b=U/FCmMT7ie5lFMenVSVCKJSlR7rMGvvPW4WdrE9FhVV+soSsBnb5+ebh+U1rW5hME8 JxvqPMdx8wUmSM5nwsS/sBJYtSF/1fZIhzb9rGpb9TicRj+vHpBwYRYdwTim3XJ6awcY nGzv342yyoPTAUO7VZ0RmDMvgBHnpWnTgLKezqMpYnJ6YJr89hrSiciObsjmNBK3Y2LZ DpylcfzQ/mYR0KjdrRS9WIXJhg9eRPKEsxnIDCl17vFFzcGAVhnyPWWdzU1p/VnBH2Uk n/AHY39atOMJev0/AygnGMTnaRouhl2l7q9zBqhYHk+kcepNdkCYkWGL7ntUiEa94BpG vJYA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=1mEzNkfOALgQf97AIhavpVqd6mi7skgR7v1hkZ7AP2U=; b=He24VgRoj/PHmu+hqse110tNHNr3i0brANL2L0N6JRkYCuytA0EtXFN4SgDJZkVT0r 9PPlt9v/MJ3c+5P4MgWhIW3cZjaQeO6KOapY9cDF31urzB7hR8z5LGP+x3zbZjbcmKwo Qe7BSG2/A+VqUlODT8wDSJ8gL00bhGAN1XM1sTyl05a7oaohqY+qzQL0yS0SGIT2TLxz 8Ppik3x/ZRx1xrCUsCplKlQs0J76Zw+Anh+57393r+PGW2XiNg/9Gy4bfjsnN9Hawuwe KAWvxbKFPSur0n26s2CdNfWpeQM15loT4x9VUse6H3l34O6CWehVdZ3FbdPq2XUqm/6S VFwA== X-Gm-Message-State: AOAM5334C7LMs7Cy5OZPID03qF6bslWgbwL1hnEuonQ3z0tYGTC+GsIl KF9o/xSiNpCHRaDcAYjjv0X/ESxUy04pwEH0jtRrbaIg X-Google-Smtp-Source: ABdhPJww7BRkVSuPAy9CreKaB0utgrvpAG7OTqyxrcvPLVkCbDpj+YODeKAx6pdt1gqhSwdjyn4LWlso3i3/a4m2sDc= X-Received: by 2002:a5b:cc9:: with SMTP id e9mr1764298ybr.287.1593144094529; Thu, 25 Jun 2020 21:01:34 -0700 (PDT) MIME-Version: 1.0 From: Krishnamraju Eraparaju Date: Fri, 26 Jun 2020 09:31:23 +0530 Message-ID: Subject: how to set up a nvme target over RAMDISK backend To: freebsd-hackers@freebsd.org X-Rspamd-Queue-Id: 49tNVS0B2Nz41mQ X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=U/FCmMT7; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of ekraju@gmail.com designates 2607:f8b0:4864:20::b34 as permitted sender) smtp.mailfrom=ekraju@gmail.com X-Spamd-Result: default: False [-3.13 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.002]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36:c]; FREEMAIL_FROM(0.00)[gmail.com]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-hackers@freebsd.org]; TO_DN_NONE(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; NEURAL_HAM_LONG(-1.01)[-1.008]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::b34:from]; NEURAL_HAM_SHORT(-0.12)[-0.125]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim] Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.33 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 26 Jun 2020 04:01:36 -0000 Hi All, Could someone please help me in setting up a nvme target over RAMDISK backend(or any pseudo disk). Equivalent in Linux would be as below: modprobe null_blk modprobe nvmet modprobe nvmet_rdma mkdir /sys/kernel/config/nvmet/subsystems/nvme-ram0 mkdir /sys/kernel/config/nvmet/subsystems/nvme-ram0/namespaces/1 echo -n /dev/ram1 >/sys/kernel/config/nvmet/subsystems/nvme-ram0/namespaces/1/device_path echo 1 > /sys/kernel/config/nvmet/subsystems/nvme-ram0/attr_allow_any_host echo 1 > /sys/kernel/config/nvmet/subsystems/nvme-ram0/namespaces/1/enable Thanks.