From nobody Wed Feb 7 11:25:27 2024 X-Original-To: fs@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4TVHpz4lncz599kl for ; Wed, 7 Feb 2024 11:25:31 +0000 (UTC) (envelope-from ben.rubson@gmx.com) Received: from mout.gmx.net (mout.gmx.net [212.227.17.21]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "mout.gmx.net", Issuer "Telekom Security ServerID OV Class 2 CA" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4TVHpy2TyBz55dy for ; Wed, 7 Feb 2024 11:25:30 +0000 (UTC) (envelope-from ben.rubson@gmx.com) Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmx.com header.s=s31663417 header.b=XAcZM8pl; dmarc=pass (policy=quarantine) header.from=gmx.com; spf=pass (mx1.freebsd.org: domain of ben.rubson@gmx.com designates 212.227.17.21 as permitted sender) smtp.mailfrom=ben.rubson@gmx.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.com; s=s31663417; t=1707305128; x=1707909928; i=ben.rubson@gmx.com; bh=ki6iHIENX+JOF5chFeTB4iOft2jRga38XFZ2S+B7k4E=; h=X-UI-Sender-Class:From:Subject:Date:References:To:In-Reply-To; b=XAcZM8plOxJDM8J8b2gR+dGhl3+d9i4qk/q3qyRBqxVKZ6X0xudUhGxQOPDBQ1Ys S7XPnpXB9aHW9zfPs16BJQwWwhqhU5QEov0Cq2DXg7YVG5Xy0PgwAGxE6iBt0ao36 BmIBF1xbtPxBbyyuzOpxMD6ZC/dqR+dckBx7w0xcb+H2WgdjPo/urXrf5YdgC6iI2 qEp9Pjmh/nrE7bQudnP8zrHEzTH+gcb7rhvLUZUXNSAo6QDSsuPKSN2YRoi700ryn MIoiB/1recud6vo8HVvbcd3EV4nYGXyaBztK9i/AWbPcUDp8zO2yq/HqBoLQtdrip sEQn7K1+o35efVQuRQ== X-UI-Sender-Class: 724b4f7f-cbec-4199-ad4e-598c01a50d3a Received: from smtpclient.apple ([45.13.49.129]) by mail.gmx.net (mrgmx104 [212.227.17.174]) with ESMTPSA (Nemesis) id 1MKKYx-1rIU3L0kdb-00Lkp8 for ; Wed, 07 Feb 2024 12:25:28 +0100 From: Ben RUBSON Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable List-Id: Filesystems List-Archive: https://lists.freebsd.org/archives/freebsd-fs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-fs@freebsd.org Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3731.700.6\)) Subject: Re: ZFS on a shared iSCSI Date: Wed, 7 Feb 2024 12:25:27 +0100 References: To: fs@freebsd.org In-Reply-To: Message-Id: X-Mailer: Apple Mail (2.3731.700.6) X-Provags-ID: V03:K1:wcaWF15g9IpPBoqDpJmd/XjbUYPbrAQlkBIApfBaY6VLKBTO2Ku CqnvTKo20uADgumSJeJZZ3BpOT6enqvLd/d210ST84QCI0+SWxO/9R7p2ytVppiDX5KTC0s 84N01CPUTPUGMlq9PzSDFSn4LaBw/MccbkOtE2dNRo6mIHyCCjf3mmPRGYIENVYfRj1cXoI TAI7BxM3wLFkadkB57KOg== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:yquS8lh6dF0=;aIEdA9RbiSctOtf8/71AlA9OKCn WRCFjAASdfiyqJHG0GNTGOWhHvbOAMai4IByGtIOcaO991dsGq8eDPDUgT+J4//tScj3lD8rQ 6MC/hpX+wPqCvmH9TEBXOMhQY6AqL0+vZDmteQw9LlCKmAf9xMOZO6QOPzeEicEknP3AvaK1l AggKdRO50cQbMhMVCCbn1Xmqz8Pxvn2jMN6MnOieL3IztSsxOwHYfKpzfb2GPBZ9+VHBRUInO rkakJLv/nH+A+wIhrLhkOwqlIcy7bgoGPm4CQ4+e3dDiHkkX4o+aW8EUQPp2wh5vVRJ2mGEYi mq+W3gOm/oCk9mn3s29xUuAKBB0wojQyvxrRQrTpiSNJFBxt9kwwNUVOZSckBAe/IGh8LZH8D l6OxFSFz6ZgTTZrHTgPyOSrsvo81RogHVr6U+TXN3mGR66AXwHZJmcz7aMQ1d3Zj4Iwj5Vv3f 07olakSVNAGZReXwVTAAPVwYK+KeWs5H26ppXk7bY+FgYrmDq5pn1dosfvhwcRXgA7nJOrZy0 ZeIO+fu5sm5jbX0rvpXZH8zZPnSQDRJ/1PkqORAsJGUFuCqQ8aTHQXhairpLSLDWsd30IHeeG vSRe18lqP+6vtSFhvMgM7/u8iJoJUpTofj49xpnGL3tBHoWqzWHdbMFv4Y5j50QWiSrKSNpVl rb+G/9BDdLK63Xwr0ZEbl7C2Jw4fDBtpezeL/r5QIDIQ7hom5KEDGgX2HSrG3wZkT5xKliOj4 jBM+GE/f2d//Xu0ozZ19O8V6z2HuYR+1dePvzKHIN01oYMSL/gQdfo01b+uicAC9Pxx0ohRrR aCnhH0qD4b2h0/brTfiqCUnXdxChiNjQq0DoN7dnCSBu8= X-Spamd-Bar: ---- X-Spamd-Result: default: False [-4.39 / 15.00]; DWL_DNSWL_LOW(-1.00)[gmx.com:dkim]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; DMARC_POLICY_ALLOW(-0.50)[gmx.com,quarantine]; NEURAL_HAM_SHORT(-0.29)[-0.292]; R_SPF_ALLOW(-0.20)[+a:mout.gmx.net]; R_DKIM_ALLOW(-0.20)[gmx.com:s=s31663417]; ONCE_RECEIVED(0.10)[]; RCVD_IN_DNSWL_LOW(-0.10)[212.227.17.21:from]; MIME_GOOD(-0.10)[text/plain]; RWL_MAILSPIKE_GOOD(-0.10)[212.227.17.21:from]; DKIM_TRACE(0.00)[gmx.com:+]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_ALL(0.00)[]; ARC_NA(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; RCVD_COUNT_ONE(0.00)[1]; PREVIOUSLY_DELIVERED(0.00)[fs@freebsd.org]; TO_DN_NONE(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; FREEMAIL_FROM(0.00)[gmx.com]; MLMMJ_DEST(0.00)[fs@freebsd.org]; APPLE_MAILER_COMMON(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; ASN(0.00)[asn:8560, ipnet:212.227.0.0/16, country:DE]; RCVD_VIA_SMTP_AUTH(0.00)[]; FREEMAIL_ENVFROM(0.00)[gmx.com] X-Rspamd-Queue-Id: 4TVHpy2TyBz55dy > On 7 Feb 2024, at 11:55, Andrea Brancatelli = wrote: >=20 > Would it be "easily possible" to have some (2?) iSCSI LUN exposed to = both servers and then activate the pool on one or the other server?=20 Hi Andrea, Yes, I have such configurations : 2 servers with same JBODs configuration. When zpool is mounted on server A, mirroring is done on both local disks = and iSCSI disks from server B. When zpool is mounted on server B, mirroring is done on both local disks = and iSCSI disks from server A. Works flawlessly. And you can have one of the 2 servers offline for some time, when it = will be back online, sync will restart. What you can't have is zpool online on both servers at the same time. So you can do the same with iSCSI disks only. Disks will have to be mounted on one server at a time only. You'll have to have a rather low network / iSCSI latency, or it will = fail / zpool will be unusable. If you have high latency, you'll have to go for ZFS send/receive. Ben