Date: Mon, 15 Feb 2021 18:37:34 +0100 From: Lorenzo Perone <lopez.on.the.lists@yellowspace.net> To: freebsd-fs@freebsd.org Subject: Migrating from base to OpenZFS: GELI drives, send/receive, and sysctls/loader.conf Message-ID: <183ed751-5a2e-5468-c82c-670820bac138@yellowspace.net>
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Hi All, I have followed regularly the development of openzfs for FreeBSD and I guess I'm ready and eager to give it a first try on a 12.2 updated system by using the port. Particularly watching the (now a little outdated, but still good) talk by Alan Jude @ EuroBSDCon 2019 was very encouraging. What I'm planning as a first run is: On the same machine: - Boot with openzfs_load instead of zfs_load - Import the "base" created pool with openzfs - Create a new pool with openzfs - Send/Receive and/or rsync data from the old to the new one A few questions arised for which I didn't find an answer yet in the official documentation. 1) Will a pool on GELI drives import well with openzfs too? I'd assume yes, why shouldn't it. Just asking to correct me if there are any precautions I should be taking or surprises to expect. 2) Will the "old" settings be honored by openzfs, such as vfs.zfs.arc_min, vfs.zfs.arc_max in /boot/loader.conf? 3) Is there an openzfs_enable as opposed to zfs_enable in rc.conf (to import/mount pools at boot)? Or is zfs_enable just compatible? 4) As far as I know, it should be possible to send/receive data from an unencrypted dataset to an encrypted one. Is this advisable from an "old base" zfs dataset (not encrypted, on geli) to a new openzfs one (encrypted at the dataset level), or should we resort to rsync? 5) What's the actual current status on extended attributes? Will they be retained in a send/receive from FreeBSD-"old" to FreeBSD-OpenZFS? I have a few shares on that machine where macs have "dropped" their EAs via AFP/SMB, what should I expect? Thanks a lot for any attention by people who know this right away, Best Regards, Lorenzo
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