Date: Thu, 2 Jun 2016 12:12:35 +0500 From: "Eugene M. Zheganin" <emz@norma.perm.ru> To: stable@freebsd.org Subject: Re: HAST, zfs and local mirroring Message-ID: <574FDC63.6090100@norma.perm.ru> In-Reply-To: <20160601132300.GA75625@zxy.spb.ru> References: <bf4a004f-8c7f-1e2e-0c31-3de266975ae4@norma.perm.ru> <20160601132300.GA75625@zxy.spb.ru>
next in thread | previous in thread | raw e-mail | index | archive | help
Hi. On 01.06.16 18:23, Slawa Olhovchenkov wrote: > > Only FS support changed data bypass FS layer is Files-11 ODS-2 level, > may be hardware support required. > > Can you use ZFS mirror with one vdev local and other vdev by iSCSI? > Every node using separate ZFS pool in this case. If you mean that I should distribute the HAST one-disk device via iSCSI and then use it as a half of zfs mirrored pool on each node, then I should ask how the pool will decide which half is more recent - local or iSCSI, after I will import it and the kernel will found that it's vdevs differs a lot ? And why should I prefere this overcomplicated scheme over the geom_mirror, which seems rather simple when comparing. Seems like I can point HAST to /dev/mirror/whatever device, right ? Thanks. Eugene.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?574FDC63.6090100>