Date: Fri, 3 Jun 2016 13:36:26 +0300 From: Slawa Olhovchenkov <slw@zxy.spb.ru> To: "Eugene M. Zheganin" <emz@norma.perm.ru> Cc: stable@freebsd.org Subject: Re: HAST, zfs and local mirroring Message-ID: <20160603103626.GE75625@zxy.spb.ru> In-Reply-To: <57514843.6010003@norma.perm.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> <57514843.6010003@norma.perm.ru>
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On Fri, Jun 03, 2016 at 02:05:07PM +0500, Eugene M. Zheganin wrote: > 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 > You message lead me to a though that I could use iSCSI to replicate the > zfs pool from node1 to both iSCSI-provided disk on a node2 in a 4-way > mirror, right ? Are there any obvious obstacles to this, that I don't > see, considering the bandwith will be enough ? No, just regular mirror. And yes, two independed pool. 10G link prefered. 1G link acts like old HDD, about 70MB/s transfer. Every transit switch degrade performance.
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