Date: Fri, 3 Jun 2016 13:40:54 +0500 From: "Eugene M. Zheganin" <emz@norma.perm.ru> To: stable@freebsd.org Subject: Re: HAST, zfs and local mirroring Message-ID: <57514296.7090906@norma.perm.ru> In-Reply-To: <20160602145028.GC75625@zxy.spb.ru> References: <bf4a004f-8c7f-1e2e-0c31-3de266975ae4@norma.perm.ru> <20160601132300.GA75625@zxy.spb.ru> <574FDC63.6090100@norma.perm.ru> <20160602145028.GC75625@zxy.spb.ru>
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Hi. On 02.06.16 19:50, Slawa Olhovchenkov wrote: > I am suggesting next setup: > > node0: > own pool zroot0: mirror-0: local_disk0 > remote-iscsi_disk1/1 > local_disk1: exported by iscsi as remote-iscsi_disk0/1 to node1 > > node1: > own pool zroot1: mirror-0: local_disk0 > remote-iscsi_disk0/1 > local_disk1: exported by iscsi as remote-iscsi_disk1/1 to node0 > > > No HAST. > Disks synced by ZFS over iSCSI. But this way I will get two independent zfs pools (or I still didn't get it), one half of each will be stored on another machine. And I need something different - a continuously replicated disk resource, that would be available on both machines in case either will crash. Cluster filesystem would be fine, but as far as I know there's no such thing on FreeBSD, so I accept it will be unavailable on slave while mounted as read-write on the master. HAST looks like a thing thats fits my requirement, only that I wank it to be redundant inside each host too, and all the documentation shows examples without local redundancy. Thanks. Eugene.
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