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Hermes SMTP Server) with ESMTPA ID 643760c0dbc0dfc9a9bb11c459c06e6f; Wed, 09 Nov 2022 20:10:30 +0000 (UTC) Content-Type: text/plain; charset=utf-8 List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@freebsd.org Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3731.200.110.1.12\)) Subject: Re: changes to the zfs boot (was: Re: git: 72a1cb05cd23 - main - rc(8): Add a zpoolupgrade rc.d script) From: Mark Millard In-Reply-To: <20221109205846.Horde.Rm5dcHB7p4mSbfFmxReYEDW@webmail.leidinger.net> Date: Wed, 9 Nov 2022 12:10:18 -0800 Cc: "Patrick M. Hausen" , Warner Losh , tsoome@freebsd.org, Li-Wen Hsu , current@freebsd.org Content-Transfer-Encoding: quoted-printable Message-Id: <671B1F82-A167-45D0-8BCC-4717F433BC11@yahoo.com> References: <202211070339.2A73dJlO027991@gitrepo.freebsd.org> <20221107121514.Horde.nulS9Wg1s3yzAsXXkuJRBa9@webmail.leidinger.net> <20221108105053.Horde.eqgFiBJe2ngGAj6BkXcv5-Z@webmail.leidinger.net> <20221109134610.Horde.JB7ibQTWprHbmIUfhg7JY7f@webmail.leidinger.net> <460205F9-5D59-4033-813B-C34E01BFD6C4@hausen.com> <20221109204509.Horde.lh5parVrWDSJ7kQCFa64hqe@webmail.leidinger.net> <5AFBB434-BB3B-4B5A-AB32-11DAFD03A2AD@hausen.com> <20221109205846.Horde.Rm5dcHB7p4mSbfFmxReYEDW@webmail.leidinger.net> To: Alexander Leidinger X-Mailer: Apple Mail (2.3731.200.110.1.12) X-Rspamd-Queue-Id: 4N6x0t6dPyz3wdb X-Spamd-Bar: ---- X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:36647, ipnet:98.137.64.0/20, country:US] X-ThisMailContainsUnwantedMimeParts: N On Nov 9, 2022, at 11:58, Alexander Leidinger = wrote: > Quoting "Patrick M. Hausen" (from Wed, 9 Nov 2022 = 20:49:37 +0100): >=20 >> Hi, >>=20 >>> Am 09.11.2022 um 20:45 schrieb Alexander Leidinger = : >>> But "zpool set feature@edonr=3Denabled rpool" (or any other feature = not in the list we talk about) would render it unbootable. >>=20 >> Sorry, just to be sure. So an active change of e.g. checksum or = compression algorithm >> might render the system unbootable but a zpool upgrade never will? At = least not intentionally? ;-) >=20 > If you mean "zpool upgrade", then no (modulo bugs). OpenZFS uses the = feature flags instead of zpool upgrade. I'm confused by that answer: QUOTE of "man zpool-upgrade" output: NAME zpool-upgrade =E2=80=93 manage version and feature flags of ZFS = storage pools . . . DESCRIPTION zpool upgrade Displays pools which do not have all supported features = enabled and pools formatted using a legacy ZFS version number. = These pools can continue to be used, but some features may not be available. Use zpool upgrade -a to enable all features on = all pools (subject to the -o compatibility property). . . . zpool upgrade [-V version] -a|pool=E2=80=A6 Enables all supported features on the given pool. . . . END QUOTE zpool upgrade is a way of changing the feature flags, is it not? zpool upgrade also does not consider the loader's status, so far as I know. If FreeBSD's kernel/world supports something that the loader would reject, teh result is still rejection for booting. As I understand, some folks ran into this for com.delphix:head_errlog until an updated loader was available and then installed. =3D=3D=3D Mark Millard marklmi at yahoo.com