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Wed, 18 Mar 2026 06:11:34 -0700 (PDT) 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 References: <5913b3ac-2ed7-42ab-9c26-0d204c38c578@gmail.com> In-Reply-To: From: Warner Losh Date: Wed, 18 Mar 2026 07:11:23 -0600 X-Gm-Features: AaiRm502hpkcMhDRfGb5KOQcCzhEfocN0Bbbp3YoWOu2TGkt12B6KvBNwO65qG8 Message-ID: Subject: Re: zfs module not loaded anymore on e.g MINIMAL To: h v , Martin Matuska Cc: freebsd-current@freebsd.org Content-Type: multipart/alternative; boundary="000000000000fc358d064d4c30e1" X-Spamd-Result: default: False [-4.00 / 15.00]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-1.000]; ARC_ALLOW(-1.00)[google.com:s=arc-20240605:i=1]; NEURAL_HAM_SHORT(-1.00)[-0.997]; FORGED_SENDER(0.30)[imp@bsdimp.com,wlosh@bsdimp.com]; R_DKIM_ALLOW(-0.20)[bsdimp-com.20230601.gappssmtp.com:s=20230601]; 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Warner On Tue, Mar 17, 2026 at 9:12=E2=80=AFAM h v wrote: > HI, > > adding the line > > options ZSTDIO # zstd-compressed kernel and user dumps > > to my custom kernel config fixed my problem. > > so it's likely necessary to add to MINIMAL config to restore loading zfs > module on boot. > > Regards > > Henry > Am 16.03.26 um 19:02 schrieb Warner Losh: > > Does any kernel load it correctly? > > Warner > > On Mon, Mar 16, 2026 at 11:45=E2=80=AFAM h v wrote= : > >> Hi, >> >> on current (since ~ March 15th) my custom kernel, based on MINIMAL, as >> well as MINIMAL itself, don't load zfs and hence refuses to mount the >> root fs ... while GENERIC does.. >> >> Error (in dmesg) seems to be: >> >> >> kernel: link_elf_obj: symbol ZSTD_isError undefined >> >> kernel: KLD file zfs.ko - could not finalize loading >> >> >> >> Regards >> >> Henry >> >> >> >> --000000000000fc358d064d4c30e1 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hey Martin,

Can you track this down?

Warner

On Tue, Mar 17, 20= 26 at 9:12=E2=80=AFAM h v <henry= .vogt@gmail.com> wrote:
=20 =20 =20

HI,

adding the line

options=C2=A0 =C2=A0 =C2=A0ZSTDIO=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 # zstd-compressed kernel and user dumps

to my custom kernel config fixed my problem.

so it's likely necessary to add to MINIMAL config to restore loading zfs module on boot.

Regards=C2=A0

Henry

Am 16.03.26 um 19:02 schrieb Warner Losh:
=20
Does any kernel load it correctly?

Warner

On Mon, Mar 16, 2026 at 11:45=E2=80=AFAM h v <henry.vogt@gmail.com> wrote:
Hi,

on current (since ~ March 15th) my custom kernel, based on MINIMAL, as
well as =C2=A0MINIMAL itself,=C2=A0 don't load zfs and hence = refuses to mount the
root fs ... while GENERIC does..

Error (in dmesg) seems to be:


kernel: link_elf_obj: symbol ZSTD_isError undefined

kernel: KLD file zfs.ko - could not finalize loading



Regards

Henry



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