`<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Tue, Jan 6, 2015 at 5:16 AM, Filip Marvan <span dir="ltr"><<a href="mailto:filip.marvan@aira.cz" target="_blank">filip.marvan@aira.cz</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div link="blue" vlink="purple" lang="CS"><div><p class="MsoNormal">Hi<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">as few guys before, I'm thinking again about High Availability storage with ZFS. I know, that there is great commercial RSF-1, but that's quite expensive for my needs.<u></u><u></u></p><p class="MsoNormal">I know, that Sašo did a great job about that on his blog <a href="http://zfs-create.blogspot.cz" target="_blank">http://zfs-create.blogspot.cz</a> but I never found the way, how to successfully configure that on current OmniOS versions.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">So I'm thinking about something more simple. Arrange two LUNs from two OmniOS ZFS storages in one software mirror through fibrechannel. Arrange that mirror in client, for example mdadm in Linux. I know, that it will have performance affect and I will lost some ZFS advantages, but I still can use snapshots, backups with send/receive and some other interesting ZFS things, so it could be usable for some projects. <u></u><u></u></p><p class="MsoNormal">Is there anyone, who tried that before? Any eperience with that?</p></div></div></blockquote><div><br></div><div>While this sounds technically possible, it is not HA. Your client is the single point of failure. I would wager that mdadm would create more availability issues than it would be solving. <br><br></div><div>I run RSF-1 and HA is still hard to achieve. I don't think I have gained any additional up-time overcoming failures, but it definitely helps with planned maintenance. Unfortunately, there are still too many ways a zfs pool can fail that having a second server connected does not help. <br><br></div><div>-Chip<br></div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div link="blue" vlink="purple" lang="CS"><div><p class="MsoNormal"><u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Thank you,<span class="HOEnZb"><font color="#888888"><u></u><u></u></font></span></p><span class="HOEnZb"><font color="#888888"><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Filip Marvan<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal"><u></u> <u></u></p></font></span></div></div><br>_______________________________________________<br>
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