`<div dir="ltr"><div><div>For things that require that, we've just been going with dual-head controller boxes.<br><br></div>One such example is Seagate (nee Xyratex) which has a dual head box and then you can use something like pacemaker to fail over by force pool import/export. You might need to combine this with something like tcpkill to trigger linux NFS clients to failover soon-ish, but it works. previously I've managed to get as low as 30 second failover under the right circumstances. the SMB stuff just seems to work.<br><br></div>Another dual head thing includes stuff with dual attached SAS (e.g. old school Sun J4400s), or echo-streams boxes with dual heads. Just about anything with dual attached back end should work. You do have to force import the zpool, so the setup and reliability of your back end connectivity is rather important.<br><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Jun 29, 2015 at 1:40 PM, Felix Nielsen <span dir="ltr"><<a href="mailto:felix.nielsen@gmail.com" target="_blank">felix.nielsen@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Saso did some great work on that -> <a href="http://zfs-create.blogspot.dk/2013/06/building-zfs-storage-appliance-part-1.html" target="_blank">http://zfs-create.blogspot.dk/2013/06/building-zfs-storage-appliance-part-1.html</a><div><br></div><div>I have not tried it myself, but please post any learning's.</div><div><br></div><div>Thanks</div><div>Felix</div></div><div class="gmail_extra"><br><div class="gmail_quote"><span class="">On Mon, Jun 29, 2015 at 7:29 PM, Michael Carruthers <span dir="ltr"><<a href="mailto:michael.carruthers@wildbit.com" target="_blank">michael.carruthers@wildbit.com</a>></span> wrote:<br></span><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class=""><div dir="ltr">Looking into some options for highly available ZFS. So far all signs point to proprietary products, however I am curious if you fine people have any open source recommendations? <br></div>
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