[Bug 294542] glabel(8): GEOM label debug gives incorrect output about already existing labels

Reply: bugzilla-noreply_a_freebsd.org: "[Bug 294542] glabel(8): GEOM label debug gives incorrect output about already existing labels"
Reply: bugzilla-noreply_a_freebsd.org: "[Bug 294542] glabel(8): GEOM label debug gives incorrect output about already existing labels"
Go to: [ bottom of page ] [ top of archives ] [ this month ]
From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 15 Apr 2026 07:56:03 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=294542

            Bug ID: 294542
           Summary: glabel(8): GEOM label debug gives incorrect output
                    about already existing labels
           Product: Base System
           Version: 16.0-CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: michaelo@FreeBSD.org

Running a 16-CURRENT vm in bhyve I see:
> GEOM_LABEL[2]: Tasting nda0.
> GEOM_LABEL[1]: MSDOSFS: nda0: no FAT volume detected.
> GEOM_LABEL[1]: Label for provider nda0 is diskid/DISK-nvme1.
> GEOM_LABEL[2]: Tasting nda0p1.
> GEOM_LABEL[1]: Label for provider nda0p1 is gpt/efiboot0.
> GEOM_LABEL[1]: Label for provider nda0p1 is gptid/d73082c2-8513-11f0-b9c7-589cfc02bf05.
> GEOM_LABEL[1]: MSDOSFS: nda0p1: FAT12/FAT16 volume detected.
> GEOM_LABEL[1]: MSDOSFS: nda0p1: FAT12/16 volume has no name.
> GEOM_LABEL[2]: Tasting nda0p2.
> GEOM_LABEL[1]: Label for provider nda0p2 is gpt/swap0.
> GEOM_LABEL[1]: Label for provider nda0p2 is gptid/d735e388-8513-11f0-b9c7-589cfc02bf05.
> GEOM_LABEL[1]: MSDOSFS: nda0p2: no FAT signature found.
> GEOM_LABEL[2]: Tasting nda0p3.
> GEOM_LABEL[1]: Label for provider nda0p3 is gpt/zfs0.
> GEOM_LABEL[1]: Label for provider nda0p3 is gptid/d73ccc9a-8513-11f0-b9c7-589cfc02bf05.
> GEOM_LABEL[1]: MSDOSFS: nda0p3: no FAT signature found.
> GEOM_LABEL[2]: Tasting diskid/DISK-nvme1.
> GEOM_LABEL[2]: Tasting gpt/efiboot0.
> GEOM_LABEL[2]: Tasting gptid/d73082c2-8513-11f0-b9c7-589cfc02bf05.
> GEOM_LABEL[2]: Tasting gpt/swap0.
> GEOM_LABEL[2]: Tasting gptid/d735e388-8513-11f0-b9c7-589cfc02bf05.
> GEOM_LABEL[2]: Tasting gpt/zfs0.
> GEOM_LABEL[2]: Tasting gptid/d73ccc9a-8513-11f0-b9c7-589cfc02bf05.
> GEOM_LABEL[2]: Tasting diskid/DISK-nvme1p1.
> GEOM_LABEL[1]: Label efiboot0(gpt/efiboot0) already exists (diskid/DISK-nvme1p1).
> GEOM_LABEL[1]: Label d73082c2-8513-11f0-b9c7-589cfc02bf05(gptid/d73082c2-8513-11f0-b9c7-589cfc02bf05) already exists (diskid/DISK-nvme1p1).
> GEOM_LABEL[1]: MSDOSFS: diskid/DISK-nvme1p1: FAT12/FAT16 volume detected.
> GEOM_LABEL[1]: MSDOSFS: diskid/DISK-nvme1p1: FAT12/16 volume has no name.
> GEOM_LABEL[2]: Tasting diskid/DISK-nvme1p2.
> GEOM_LABEL[1]: Label swap0(gpt/swap0) already exists (diskid/DISK-nvme1p2).
> GEOM_LABEL[1]: Label d735e388-8513-11f0-b9c7-589cfc02bf05(gptid/d735e388-8513-11f0-b9c7-589cfc02bf05) already exists (diskid/DISK-nvme1p2).
> GEOM_LABEL[1]: MSDOSFS: diskid/DISK-nvme1p2: no FAT signature found.
> GEOM_LABEL[2]: Tasting diskid/DISK-nvme1p3.
> GEOM_LABEL[1]: Label zfs0(gpt/zfs0) already exists (diskid/DISK-nvme1p3).
> GEOM_LABEL[1]: Label d73ccc9a-8513-11f0-b9c7-589cfc02bf05(gptid/d73ccc9a-8513-11f0-b9c7-589cfc02bf05) already exists (diskid/DISK-nvme1p3).
> GEOM_LABEL[1]: MSDOSFS: diskid/DISK-nvme1p3: no FAT signature found.
> GEOM_LABEL[1]: Label diskid/DISK-nvme1 removed.
> GEOM_LABEL[1]: Label gptid/d73ccc9a-8513-11f0-b9c7-589cfc02bf05 removed.
> GEOM_LABEL[2]: Tasting nda0.
> GEOM_LABEL[2]: Tasting gpt/zfs0.
> GEOM_LABEL[1]: Label gptid/d735e388-8513-11f0-b9c7-589cfc02bf05 removed.
> GEOM_LABEL[1]: Label gptid/d73082c2-8513-11f0-b9c7-589cfc02bf05 removed.
> GEOM_LABEL[2]: Tasting gpt/efiboot0.

The collision does not make sense and implies that one cannot have several
labels for the same entity. Booted off 15.0-RELEASE ISO and see via serial:
> GEOM_LABEL[2]: Tasting nda0.
> Trying to mount root from cd9660:/dev/iso9660/15_0_RELEASE_AMD64_BO [ro]...
> GEOM_LABEL[1]: MSDOSFS: nda0: no FAT volume detected.
> GEOM_LABEL[1]: Label for provider nda0 is diskid/DISK-nvme0.
> GEOM_LABEL[2]: Tasting nda0p1.
> GEOM_LABEL[1]: Label for provider nda0p1 is gpt/efiboot0.
> GEOM_LABEL[1]: Label for provider nda0p1 is gptid/d73082c2-8513-11f0-b9c7-589cfc02bf05.
> GEOM_LABEL[1]: MSDOSFS: nda0p1: FAT12/FAT16 volume detected.
> GEOM_LABEL[1]: MSDOSFS: nda0p1: FAT12/16 volume has no name.
> GEOM_LABEL[2]: Tasting nda0p2.
> GEOM_LABEL[1]: Label for provider nda0p2 is gpt/swap0.
> GEOM_LABEL[1]: Label for provider nda0p2 is gptid/d735e388-8513-11f0-b9c7-589cfc02bf05.
> GEOM_LABEL[1]: MSDOSFS: nda0p2: no FAT signature found.
> GEOM_LABEL[2]: Tasting nda0p3.
> GEOM_LABEL[1]: Label for provider nda0p3 is gpt/zfs0.
> GEOM_LABEL[1]: Label for provider nda0p3 is gptid/d73ccc9a-8513-11f0-b9c7-589cfc02bf05.
> GEOM_LABEL[1]: MSDOSFS: nda0p3: no FAT signature found.
> GEOM_LABEL[2]: Tasting diskid/DISK-nvme0.
> GEOM_LABEL[2]: Tasting cd0.
> GEOM_LABEL[1]: ISO9660 file system detected on cd0.
> GEOM_LABEL[1]: Label for provider cd0 is iso9660/15_0_RELEASE_AMD64_BO.
> GEOM_LABEL[1]: MSDOSFS: cd0: FAT12/16 volume not valid.
> GEOM_LABEL[2]: Tasting gpt/efiboot0.
> GEOM_LABEL[2]: Tasting gptid/d73082c2-8513-11f0-b9c7-589cfc02bf05.
> GEOM_LABEL[2]: Tasting gpt/swap0.
> GEOM_LABEL[2]: Tasting gptid/d735e388-8513-11f0-b9c7-589cfc02bf05.
> GEOM_LABEL[2]: Tasting gpt/zfs0.
> GEOM_LABEL[2]: Tasting gptid/d73ccc9a-8513-11f0-b9c7-589cfc02bf05.
> GEOM_LABEL[2]: Tasting diskid/DISK-nvme0p1.
> GEOM_LABEL[1]: Label efiboot0(gpt/efiboot0) already exists (diskid/DISK-nvme0p1).
> GEOM_LABEL[1]: Label d73082c2-8513-11f0-b9c7-589cfc02bf05(gptid/d73082c2-8513-11f0-b9c7-589cfc02bf05) already exists (diskid/DISK-nvme0p1).
> GEOM_LABEL[1]: MSDOSFS: diskid/DISK-nvme0p1: FAT12/FAT16 volume detected.
> GEOM_LABEL[1]: MSDOSFS: diskid/DISK-nvme0p1: FAT12/16 volume has no name.
> GEOM_LABEL[2]: Tasting diskid/DISK-nvme0p2.
> GEOM_LABEL[1]: Label swap0(gpt/swap0) already exists (diskid/DISK-nvme0p2).
> GEOM_LABEL[1]: Label d735e388-8513-11f0-b9c7-589cfc02bf05(gptid/d735e388-8513-11f0-b9c7-589cfc02bf05) already exists (diskid/DISK-nvme0p2).
> GEOM_LABEL[1]: MSDOSFS: diskid/DISK-nvme0p2: no FAT signature found.
> GEOM_LABEL[2]: Tasting diskid/DISK-nvme0p3.
> GEOM_LABEL[1]: Label zfs0(gpt/zfs0) already exists (diskid/DISK-nvme0p3).
> GEOM_LABEL[1]: Label d73ccc9a-8513-11f0-b9c7-589cfc02bf05(gptid/d73ccc9a-8513-11f0-b9c7-589cfc02bf05) already exists (diskid/DISK-nvme0p3).
> GEOM_LABEL[1]: MSDOSFS: diskid/DISK-nvme0p3: no FAT signature found.
> GEOM_LABEL[2]: Tasting iso9660/15_0_RELEASE_AMD64_BO.

Same output, looking with gpart and the created devices:
> root@:~ # gpart show
> =>       40  167772087  nda0  GPT  (80G)
>          40     532480     1  efi  (260M)
>      532520       2008        - free -  (1.0M)
>      534528   16777216     2  freebsd-swap  (8.0G)
>    17311744  150458368     3  freebsd-zfs  (72G)
>   167770112       2015        - free -  (1.0M)
> 
> =>       40  167772087  diskid/DISK-nvme0  GPT  (80G)
>          40     532480                  1  efi  (260M)
>      532520       2008                     - free -  (1.0M)
>      534528   16777216                  2  freebsd-swap  (8.0G)
>    17311744  150458368                  3  freebsd-zfs  (72G)
>   167770112       2015                     - free -  (1.0M)
and
> root@:~ # ls -l /dev/gpt*/* /dev/diskid/*
> crw-r-----  1 root operator 0x76 Apr 15 07:38 /dev/diskid/DISK-nvme0
> crw-r-----  1 root operator 0x7e Apr 15 07:38 /dev/diskid/DISK-nvme0p1
> crw-r-----  1 root operator 0x7f Apr 15 07:38 /dev/diskid/DISK-nvme0p2
> crw-r-----  1 root operator 0x80 Apr 15 07:38 /dev/diskid/DISK-nvme0p3
> crw-r-----  1 root operator 0x78 Apr 15 07:38 /dev/gpt/efiboot0
> crw-r-----  1 root operator 0x7a Apr 15 07:38 /dev/gpt/swap0
> crw-r-----  1 root operator 0x7c Apr 15 07:38 /dev/gpt/zfs0
> crw-r-----  1 root operator 0x79 Apr 15 07:38 /dev/gptid/d73082c2-8513-11f0-b9c7-589cfc02bf05
> crw-r-----  1 root operator 0x7b Apr 15 07:38 /dev/gptid/d735e388-8513-11f0-b9c7-589cfc02bf05
> crw-r-----  1 root operator 0x7d Apr 15 07:38 /dev/gptid/d73ccc9a-8513-11f0-b9c7-589cfc02bf05

So all is fine. There is bug in the debug logging code.

-- 
You are receiving this mail because:
You are the assignee for the bug.