Date: Sat, 04 Nov 2023 06:38:42 -0500 From: Mike Karels <mike@karels.net> To: Ronald Klop <ronald@FreeBSD.org> Cc: Mark Millard <marklmi@yahoo.com>, FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org> Subject: Re: Is 14.0 to released based on 0 for sysctl vfs.zfs.bclone_enabled ? Message-ID: <BBFDD30F-FB5D-44C8-ADA7-5B5AF859D86A@karels.net> In-Reply-To: <7a906956-6836-421e-b25e-ff701369e3ed@FreeBSD.org> References: <2F81D978-7DBD-42CE-8ECF-C020B0CB5C29.ref@yahoo.com> <2F81D978-7DBD-42CE-8ECF-C020B0CB5C29@yahoo.com> <7a906956-6836-421e-b25e-ff701369e3ed@FreeBSD.org>
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On 4 Nov 2023, at 4:01, Ronald Klop wrote: > On 11/4/23 02:39, Mark Millard wrote: >> It looks to me like releng/14.0 (as of 14.0-RC4) still has: >> >> int zfs_bclone_enabled; >> SYSCTL_INT(_vfs_zfs, OID_AUTO, bclone_enabled, CTLFLAG_RWTUN, >> &zfs_bclone_enabled, 0, "Enable block cloning"); >> >> leaving block cloning effectively disabled by default, no >> matter what the pool has enabled. >> >> https://www.freebsd.org/releases/14.0R/relnotes/ also reports: >> >> QUOTE >> OpenZFS has been upgraded to version 2.2. New features include: >> =E2=80=A2 >> block cloning, which allows shallow copies of blocks in file copies. T= his is optional, and disabled by default; it can be enabled with sysctl v= fs.zfs.bclone_enabled=3D1. >> END QUOTE >> > > > I think this answers your question in the subject. I think so too (and I wrote that text). >> Just curiousity on my part about the default completeness of >> openzfs-2.2 support, not an objection either way. >> > > > I haven't seen new issues with block cloning in the last few weeks ment= ioned on the mailing lists. All known issues are fixed AFAIK. > But I can imagine that the risk+effect ratio of data corruption is seen= as a bit too high for a 14.0 release for this particular feature. That d= oes not diminish the rest of the completeness of openzfs-2.2. > > NB: I'm not involved in developing openzfs or the decision making in th= e release. Just repeating what I read on the lists. There was another block cloning fix in 14.0-RC4; see the commit log. Maybe there will be no more issues, but it seems that corner cases were still being found recently. Mike > > Regards, > Ronald. > > >> >> =3D=3D=3D >> Mark Millard >> marklmi at yahoo.com >> >>
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