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Date:      Thu, 07 Oct 2021 16:42:32 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 258987] 13.0-RELEASE installer broken redundancy with UEFI and ZFS
Message-ID:  <bug-258987-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D258987

            Bug ID: 258987
           Summary: 13.0-RELEASE installer broken redundancy with UEFI and
                    ZFS
           Product: Base System
           Version: 13.0-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: bin
          Assignee: bugs@FreeBSD.org
          Reporter: freebsdbugzilla@agneau.org

When installing FreeBSD 13.0-RELEASE with UEFI and multi-disk (mirror or ra=
idz)
ZFS , the expected redundancy is broken twice.

1/
An EFI partition is created on all disks of the pool BUT only the EFI parti=
tion
of the first disk of the pool is formated and setup, the EFI partition of t=
he
other disks are not formated (and of course not setup).
As a result, if the first disk of the pool fails, the server will not be ab=
le
to reboot because of missing content of the EFI partition on the remaining
disks.

2/
The installer add an entry in the fstab to mount permanently the efi partit=
ion
of the first disk to /boot/efi .
If that physical disk fails, you have one mounted filesystem from a failed
disk. This may jeopardize the stability of the system. One should never mou=
nt
permanently a filesystem from a non-raid device on a server build for
redundancy.

All of this is new to 13.0-RELEASE and seems added by the following commit=
=20

https://cgit.freebsd.org/src/commit/?id=3D0b7472b3d8d2f1e90fade5236b44fd98d=
8e396c2

Previous releases (12.1, 12.2) setup correctly the EFI partition of ALL dis=
ks
and don't add /boot/efi  to any physical disk in the fstab.

I understand, the new (13.0) method for populating the EFI partition requir=
e it
to be mounted at install time.
The installer should loop thru each EFI partition to format it , mount it
temporary, set it up, and unmount it.

This could also be done by freebsd-update when needed.

By doing this, we could get EFI/zfs installation redundancy reliable again.

--=20
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