Now where do we go?

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Post by grahamperrin » Fri Jul 19, 2013 10:21 pm

claunia wrote:I can confirm as of Mac OS X 10.9 DP3, ZEVO is not working.


Should ZEVO work ok with Mavericks?
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Re: Now where do we go?

Post by Kocoman » Mon Sep 30, 2013 1:16 pm

i get this error in 13a584

System extension excluded

The system extension “/System/Library/Extensions/ZFSFilesystem.kext” is in the kext exclude list.

The kext(s) will not be loaded. Contact vendor to resolve this issue.
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Re: Now where do we go?

Post by ylluminate » Mon Sep 30, 2013 2:34 pm

@Kocoman: https://twitter.com/GetGreenBytes/statu ... 4827849728 -- Feel free to keep tweeting them to let them know we need this SOONER than later...
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Re: Now where do we go?

Post by ilovezfs » Mon Sep 30, 2013 9:29 pm

ylluminate wrote:@Kocoman: https://twitter.com/GetGreenBytes/statu ... 4827849728 -- Feel free to keep tweeting them to let them know we need this SOONER than later...

Better just to let ZEVO die peacefully at home with its family.
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Re: Now where do we go?

Post by ylluminate » Mon Sep 30, 2013 9:59 pm

Well I would like to see Zevo live. I absolutely would not like to see it die if we can get the support needed. It's better than the other implementations at the moment yet still, so I'm pro keeping it going. Don is very talented and did a fantastic job. The other option is to release the source to the community so that we can pick up the torch.
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Re: Now where do we go?

Post by ilovezfs » Mon Sep 30, 2013 10:52 pm

ylluminate wrote:Well I would like to see Zevo live. I absolutely would not like to see it die if we can get the support needed. It's better than the other implementations at the moment yet still, so I'm pro keeping it going. Don is very talented and did a fantastic job. The other option is to release the source to the community so that we can pick up the torch.

It is not better than the OpenZFS based new MacZFS, and ZEVO is stuck at pool version 28, forever, because it is not tied in any way to the upstream ZFS work. Don himself has abandoned using ZEVO and moved to OpenZFS.

The OpenZFS based new MacZFS has pool version 5000, feature flags, zvols, lz4 compression, no pool size limitation, deduplication, no need for the afp liberate hack, as well as a separate repository with filesystem-level encryption. Oh, and did I mention it already works on Mavericks? You are kidding yourself.
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Questions about MacZFS

Post by grahamperrin » Mon Sep 30, 2013 11:40 pm

Amongst MacZFS discussions, some recent unanswered questions:


From the former:

> … it would be good to see, in (the MacZFS development) group,
> guidance on things that might/should be avoided when testing.
>
> Thanks
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Mavericks exclusion of KEXTs for ZEVO CE 1.1.1

Post by grahamperrin » Tue Oct 01, 2013 12:45 am

Kocoman wrote:i get this error in 13a584

System extension excluded

The system extension “/System/Library/Extensions/ZFSFilesystem.kext” is in the kext exclude list.

The kext(s) will not be loaded. Contact vendor to resolve this issue.


The exclusion relates to a bug reported (2013-06-14) against 13A476u, and is familiar to me from 13A558 (~2013-08-20).

Kocoman, I'd like to ask a related question but (for Mavericks) not in public. http://open-zfs.org/wiki/User:Grahamperrin#Contact – thank you.
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Re: Now where do we go?

Post by ylluminate » Tue Oct 01, 2013 12:48 am

@ilovezfs I have had many chats with Don. Sure, that's why I started raising some stink some time ago. I found out that Don had gone away and then was hopeful to see some good news from GreenBytes, but it didn't come… BUT Don did a LOT of work to tie Zevo into mainline ZFS, so that argument doesn't hold water. I have actually used dedup and so forth on Zevo and tested quite a bit of things that I don't know if I have the liberty of discussing here, but the bottom line is that Zevo's still really a solid codebase. :)

I have been using Zevo on production systems for about 2 years now and I've really had an overall positive experience. I just can't see trusting the maczfs codebase. I used to do a lot with it and the group there, but they really went down some wrong avenues. Have they changed and are things better? I really am not sure. From what you say they have, but can you point me to a solid production quality release that I can replace Zevo with? I sincerely don't have the trust from previous experiences and knowing just how closely Don worked with core ZFS integration and his attention to details that I worked together with him on. There are extremely few developers in this world that are as intimate with OS X FS development as Don is and so even with the age and lack of updates so far, I still trust what I've been using, which has been exceptionally stable (no panics for over a year from Zevo, and I drive these pools hard).
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Re: Now where do we go?

Post by ilovezfs » Tue Oct 01, 2013 12:54 am

ylluminate wrote:@ilovezfs I have had many chats with Don. Sure, that's why I started raising some stink some time ago. I found out that Don had gone away and then was hopeful to see some good news from GreenBytes, but it didn't come… BUT Don did a LOT of work to tie Zevo into mainline ZFS, so that argument doesn't hold water. I have actually used dedup and so forth on Zevo and tested quite a bit of things that I don't know if I have the liberty of discussing here, but the bottom line is that Zevo's still really a solid codebase. :)

The argument does hold water since ZEVO does not have illumos as its upstream nor is it using pool version 5000. Hence it is entirely incompatible with pools created on
- Linux
- FreeBSD
- OmniOS
- SmartOS
- OpenIndiana
- new MacZFS
unless at create-time you specifically create your pool as version 28, solely to accommodate ZEVO.

As for your "dedup and so forth," the so forth does not include any of the other features I mentioned, since, other than zvols (which ZEVO has no excuse for not supporting since they are part of pool version 28), those features are specific to pool version 5000.

Those working on the new MacZFS are not the same people as worked on the old one.
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