Setting copies=2 is a poor substitute for vdev-level redundancy. Q) Can I set copies=2 in lieu of using mirrors or raidz? ZFS will not be able to repair errors it finds unless you have redundancy at the vdev level. One workaround for that is to edit your file(s) and commit them in your repository clone, that way it will have a commit id.īest practices Q) Do I have to use mirrors or raidz? Ī) Have to? No. If you make a small local change to the code then this technique will not work. You can see that this machine is running the latest ZFS, and is one commit behind the latest SPL. I have highlighted the relevant text to match. Assuming you used zfsadm to build, or that you executed the autoconf, and configure steps before compiling the following works. Q) I compiled from source, how do I know that I am running what I compiled? Ī) There are a couple of sysctls that can be read to determine what commit was compiled into your custom kexts. $ sudo zpool create tank raidz /tmp/aaa /tmp/bbb /tmp/ccc The example uses simple files, its also possible to use disk images. Q) Can I set up a test pool using files instead of disks? Ī) Yes. We do not support the closed-source Oracle Solaris ZFS pool versions 29 and up. We support pool version 5000 and pool versions less than or equal to 28. Pool version 5000 is pool version 28 plus support for feature flags. Q) What version of ZFS do you use? Ī) OpenZFS. General Q) What is OpenZFS on OS X? Ī) See the article entitled OpenZFS on OS X. 5.7 Q) Auto-import fails after Catalina?.5.4 Q) Can TimeMachine backup the contents of a ZFS volume?.5.3 Q) So if I use O3X, that means I don't need to back up, right?.5.2 Q) Can I boot my computer off of O3X?.5.1 Q) Can I use finder permissions aka ACLs?.4.9 Q) Uninstalling on Big Sur and later.4.8 Q) Updating crypto to 2.0 from earlier 2.0-rc.4.6 Q) Can Time Machine backups be stored on ZFS?.4.4 Q) Do HFS-only applications such as Photos, iCloud Drive and macOS Server work on ZFS?.4.1 Q) How do I create an O3X compatible pool on another OpenZFS platform?.3.4 Q) Why does OSX server not allow the server storage to be on ZFS?.3.3 Q) OK, I manually mounted my snapshot but still cannot see it in Finder. 2.2 Q) Can I set copies=2 in lieu of using mirrors or raidz?.2.1 Q) Do I have to use mirrors or raidz?.1.5 Q) I compiled from source, how do I know that I am running what I compiled?.1.4 Q) Can I set up a test pool using files instead of disks?.
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