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Fri, 12 Jun 2026 14:35:06 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 296022] FreeBSD can't mount NetBSD FFSv2 partitions Date: Fri, 12 Jun 2026 14:35:06 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 16.0-CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: rbranco@suse.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Bug reports List-Archive: https://lists.freebsd.org/archives/freebsd-bugs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-bugs@FreeBSD.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D296022 --- Comment #1 from Ricardo Branco --- I ran this command on NetBSD: # dumpfs -s / file system: /dev/rdk6 format FFSv2 endian little-endian location 65536 (-b 128) magic 19540119 time Fri Jun 12 16:24:17 2026 superblock location 65536 id [ 68d06135 787b968e ] nbfree 9260990 ndir 51861 nifree 18957676 nffree 16418 ncg 414 size 78643200 blocks 77424358 bsize 32768 shift 15 mask 0xffff8000 fsize 4096 shift 12 mask 0xfffff000 frag 8 shift 3 fsbtodb 3 bpg 23745 fpg 189960 ipg 46848 minfree 5% optim time maxcontig 2 maxbpg 4096 symlinklen 120 contigsumsize 2 maxfilesize 0x000800800805ffff nindir 4096 inopb 128 avgfilesize 16384 avgfpdir 64 sblkno 24 cblkno 32 iblkno 40 dblkno 2968 sbsize 4096 cgsize 32768 csaddr 2968 cssize 8192 cgrotor 0 fmod 0 ronly 0 clean 0x02 wapbl version 0x1 location 2 flags 0x0 wapbl loc0 314597568 loc1 131072 loc2 512 loc3 3 snapshot inodes 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 usrquota 0 grpquota 0 flags wapbl=20 fsmnt / volname swuid 0 It seems FreeBSD is reading NetBSD WAPBL fields as UFS2 fields due to struct layout divergence: wapbl loc1 131072 FreeBSD reports fs_metaspace =3D 131072. That's wapbl loc1. FreeBSD's fs_metaspace field offset in struct fs corresponds to a NetBSD WAPBL journal location field. --=20 You are receiving this mail because: You are the assignee for the bug.=