Re: git: 87a7b35f04b6 - main - bsdinstall: fix vfs.zfs.vdev.min_auto_ashift oid

From: Nuno Teixeira <eduardo_at_freebsd.org>
Date: Sat, 20 Sep 2025 22:41:46 UTC
Hello!

I've just upgraded to a recent main and on boot i see:

`sysctl: unknown oid 'vfs.zfs.min_auto_ashift' at line 9`

I remember this line in /etc/sysctl.conf for years:

```
#
#  This file is read when going to multi-user and its contents piped thru
#  ``sysctl'' to adjust kernel values.  ``man 5 sysctl.conf'' for details.
#

# Uncomment this to prevent users from seeing information about processes
that
# are being run under another UID.
#security.bsd.see_other_uids=0
vfs.zfs.min_auto_ashift=12
```
Do we need to fix it from vfs.zfs.min_auto_ashift ->
vfs.zfs.vdev.min_auto_ashift
on /etc/sysctl.conf?

Cheers,

Ed Maste <emaste@freebsd.org> escreveu (sexta, 19/09/2025 à(s) 17:03):

> The branch main has been updated by emaste:
>
> URL:
> https://cgit.FreeBSD.org/src/commit/?id=87a7b35f04b60956e9aa192680ae80773ec38f14
>
> commit 87a7b35f04b60956e9aa192680ae80773ec38f14
> Author:     Siva Mahadevan <me@svmhdvn.name>
> AuthorDate: 2025-07-15 16:45:24 +0000
> Commit:     Ed Maste <emaste@FreeBSD.org>
> CommitDate: 2025-09-19 16:02:57 +0000
>
>     bsdinstall: fix vfs.zfs.vdev.min_auto_ashift oid
>
>     Signed-off-by: Siva Mahadevan <me@svmhdvn.name>
>     PR: 266374
>     Pull request: https://github.com/freebsd/freebsd-src/pull/1851
>     Reviewed by: emaste
>     Sponsored by: The FreeBSD Foundation
> ---
>  usr.sbin/bsdinstall/scripts/zfsboot | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/usr.sbin/bsdinstall/scripts/zfsboot
> b/usr.sbin/bsdinstall/scripts/zfsboot
> index aa05faa7d3dd..5fbf56ea59ac 100755
> --- a/usr.sbin/bsdinstall/scripts/zfsboot
> +++ b/usr.sbin/bsdinstall/scripts/zfsboot
> @@ -69,7 +69,7 @@ f_include $BSDCFG_SHARE/variable.subr
>  : ${ZFSBOOT_VDEV_TYPE:=stripe}
>
>  #
> -# Should we use sysctl(8) vfs.zfs.min_auto_ashift=12 to force 4K sectors?
> +# Should we use sysctl(8) vfs.zfs.vdev.min_auto_ashift=12 to force 4K
> sectors?
>  #
>  : ${ZFSBOOT_FORCE_4K_SECTORS=1}
>
> @@ -221,7 +221,7 @@ PRINTF_CONF="printf '%s=\"%%s\"\\\n' %s >> \"%s\""
>  PRINTF_FSTAB='printf "$FSTAB_FMT" "%s" "%s" "%s" "%s" "%s" "%s" >> "%s"'
>  SHELL_TRUNCATE=':> "%s"'
>  SWAP_GMIRROR_LABEL='gmirror label swap %s'
> -SYSCTL_ZFS_MIN_ASHIFT_12='sysctl vfs.zfs.min_auto_ashift=12'
> +SYSCTL_ZFS_MIN_ASHIFT_12='sysctl vfs.zfs.vdev.min_auto_ashift=12'
>  UMOUNT='umount "%s"'
>  ZFS_CREATE_WITH_OPTIONS='zfs create %s "%s"'
>  ZFS_MOUNT='zfs mount "%s"'
> @@ -255,7 +255,7 @@ msg_encrypt_disks="Encrypt Disks?"
>  msg_encrypt_disks_help="Use geli(8) to encrypt all data partitions"
>  msg_error="Error"
>  msg_force_4k_sectors="Force 4K Sectors?"
> -msg_force_4k_sectors_help="Align partitions to 4K sector boundries and
> set vfs.zfs.min_auto_ashift=12"
> +msg_force_4k_sectors_help="Align partitions to 4K sector boundries and
> set vfs.zfs.vdev.min_auto_ashift=12"
>  msg_freebsd_installer="$OSNAME Installer"
>  msg_geli_password="Enter a strong passphrase, used to protect your
> encryption keys. You will be required to enter this passphrase each time
> the system is booted"
>  msg_geli_setup="Initializing encryption on selected disks,\n this will
> take several seconds per disk"
> @@ -1099,7 +1099,7 @@ zfs_create_boot()
>         #
>         f_dprintf "$funcname: Preparing disk partitions for ZFS pool..."
>
> -       # Force 4K sectors using vfs.zfs.min_auto_ashift=12
> +       # Force 4K sectors using vfs.zfs.vdev.min_auto_ashift=12
>         if [ "$ZFSBOOT_FORCE_4K_SECTORS" ]; then
>                 f_dprintf "$funcname: With 4K sectors..."
>                 f_eval_catch $funcname sysctl "$SYSCTL_ZFS_MIN_ASHIFT_12" \
> @@ -1382,7 +1382,7 @@ zfs_create_boot()
>
>         if [ "$ZFSBOOT_FORCE_4K_SECTORS" ]; then
>                 f_eval_catch $funcname echo "$ECHO_APPEND" \
> -                    'vfs.zfs.min_auto_ashift=12' \
> +                    'vfs.zfs.vdev.min_auto_ashift=12' \
>                      $BSDINSTALL_TMPETC/sysctl.conf.zfs || return $FAILURE
>         fi
>
>
>

-- 
Nuno Teixeira
FreeBSD UNIX:  <eduardo@FreeBSD.org>   Web:  https://FreeBSD.org