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Bartosz Stec

2011-Jun-15 11:43 UTC

gpt labels for zfs partitions don't appear in /dev/gpt

Hi list,
please take a look at this:

    #gpart show
    =>      34  80293181  ada0  GPT  (38G)
             34       128     1  freebsd-boot  (64k)
            162   2097152     2  freebsd-swap  (1.0G)
        2097314  76068013     3  freebsd-zfs  (36G)
       78165327   2127888        - free -  (1.0G)

    =>      34  78165293  ada1  GPT  (37G)
             34       128     1  freebsd-boot  (64k)
            162   2097152     2  freebsd-swap  (1.0G)
        2097314  76068013     3  freebsd-zfs  (36G)

    =>      34  80293181  ada2  GPT  (38G)
             34       128     1  freebsd-boot  (64k)
            162   2097152     2  freebsd-swap  (1.0G)
        2097314  76068013     3  freebsd-zfs  (36G)
       78165327   2127888        - free -  (1.0G)

    # gpart show -l
    =>      34  80293181  ada0  GPT  (38G)
             34       128     1  (null)  (64k)
            162   2097152     2  swap0  (1.0G)
        2097314  76068013     3  disk0  (36G)
       78165327   2127888        - free -  (1.0G)

    =>      34  78165293  ada1  GPT  (37G)
             34       128     1  (null)  (64k)
            162   2097152     2  swap1  (1.0G)
        2097314  76068013     3  disk1  (36G)

    =>      34  80293181  ada2  GPT  (38G)
             34       128     1  (null)  (64k)
            162   2097152     2  swap2  (1.0G)
        2097314  76068013     3  disk2  (36G)
       78165327   2127888        - free -  (1.0G)

As you see I have ada{0-2}p3 labeled as disk{0-2}

All labeled partitions have valid gpt id but zfs partitions don't have 
accesible gpt label in /dev/gpt:

    # glabel list
    Geom name: ada0p1
    Providers:
    1. Name: gptid/fe8c7129-bc68-11df-8955-0050dad823cd
        Mediasize: 65536 (64k)
        Sectorsize: 512
        Stripesize: 0
        Stripeoffset: 17408
        Mode: r0w0e0
        secoffset: 0
        offset: 0
        seclength: 128
        length: 65536
        index: 0
    Consumers:
    1. Name: ada0p1
        Mediasize: 65536 (64k)
        Sectorsize: 512
        Stripesize: 0
        Stripeoffset: 17408
        Mode: r0w0e0

    Geom name: ada0p2
    Providers:
    1. Name: gpt/swap0
        Mediasize: 1073741824 (1.0G)
        Sectorsize: 512
        Stripesize: 0
        Stripeoffset: 82944
        Mode: r1w1e1
        secoffset: 0
        offset: 0
        seclength: 2097152
        length: 1073741824
        index: 0
    Consumers:
    1. Name: ada0p2
        Mediasize: 1073741824 (1.0G)
        Sectorsize: 512
        Stripesize: 0
        Stripeoffset: 82944
        Mode: r1w1e2

    Geom name: ada0p3
    Providers:
    1. Name: gptid/2ea57c66-bc69-11df-8955-0050dad823cd
        Mediasize: 38946822656 (36G)
        Sectorsize: 512
        Stripesize: 0
        Stripeoffset: 1073824768
        Mode: r1w1e1
        secoffset: 0
        offset: 0
        seclength: 76068013
        length: 38946822656
        index: 0
    Consumers:
    1. Name: ada0p3
        Mediasize: 38946822656 (36G)
        Sectorsize: 512
        Stripesize: 0
        Stripeoffset: 1073824768
        Mode: r1w1e2

    Geom name: ada1p1
    Providers:
    1. Name: gptid/060c432a-6852-11df-a16c-0050dad823cd
        Mediasize: 65536 (64k)
        Sectorsize: 512
        Stripesize: 0
        Stripeoffset: 17408
        Mode: r0w0e0
        secoffset: 0
        offset: 0
        seclength: 128
        length: 65536
        index: 0
    Consumers:
    1. Name: ada1p1
        Mediasize: 65536 (64k)
        Sectorsize: 512
        Stripesize: 0
        Stripeoffset: 17408
        Mode: r0w0e0

    Geom name: ada1p2
    Providers:
    1. Name: gpt/swap1
        Mediasize: 1073741824 (1.0G)
        Sectorsize: 512
        Stripesize: 0
        Stripeoffset: 82944
        Mode: r1w1e1
        secoffset: 0
        offset: 0
        seclength: 2097152
        length: 1073741824
        index: 0
    Consumers:
    1. Name: ada1p2
        Mediasize: 1073741824 (1.0G)
        Sectorsize: 512
        Stripesize: 0
        Stripeoffset: 82944
        Mode: r1w1e2

    Geom name: ada1p3
    Providers:
    1. Name: gptid/5bc92016-6852-11df-a16c-0050dad823cd
        Mediasize: 38946822656 (36G)
        Sectorsize: 512
        Stripesize: 0
        Stripeoffset: 1073824768
        Mode: r1w1e1
        secoffset: 0
        offset: 0
        seclength: 76068013
        length: 38946822656
        index: 0
    Consumers:
    1. Name: ada1p3
        Mediasize: 38946822656 (36G)
        Sectorsize: 512
        Stripesize: 0
        Stripeoffset: 1073824768
        Mode: r1w1e2

    Geom name: ada2p1
    Providers:
    1. Name: gptid/c506cc78-bc3a-11df-8066-0050dad823cd
        Mediasize: 65536 (64k)
        Sectorsize: 512
        Stripesize: 0
        Stripeoffset: 17408
        Mode: r0w0e0
        secoffset: 0
        offset: 0
        seclength: 128
        length: 65536
        index: 0
    Consumers:
    1. Name: ada2p1
        Mediasize: 65536 (64k)
        Sectorsize: 512
        Stripesize: 0
        Stripeoffset: 17408
        Mode: r0w0e0

    Geom name: ada2p2
    Providers:
    1. Name: gpt/swap2
        Mediasize: 1073741824 (1.0G)
        Sectorsize: 512
        Stripesize: 0
        Stripeoffset: 82944
        Mode: r1w1e1
        secoffset: 0
        offset: 0
        seclength: 2097152
        length: 1073741824
        index: 0
    Consumers:
    1. Name: ada2p2
        Mediasize: 1073741824 (1.0G)
        Sectorsize: 512
        Stripesize: 0
        Stripeoffset: 82944
        Mode: r1w1e2

    Geom name: ada2p3
    Providers:
    1. Name: gptid/87d467cc-bc3b-11df-8066-0050dad823cd
        Mediasize: 38946822656 (36G)
        Sectorsize: 512
        Stripesize: 0
        Stripeoffset: 1073824768
        Mode: r1w1e1
        secoffset: 0
        offset: 0
        seclength: 76068013
        length: 38946822656
        index: 0
    Consumers:
    1. Name: ada2p3
        Mediasize: 38946822656 (36G)
        Sectorsize: 512
        Stripesize: 0
        Stripeoffset: 1073824768
        Mode: r1w1e2

And also:

    # ls /dev/gpt
    swap0  swap1  swap2

I've enabled kern.geom.label.debug=1 and here's what I got during boot:

    # dmesg | grep GEOM_LABEL
    GEOM_LABEL[1]: MSDOSFS: ada0: FAT12/16 volume not valid.
    GEOM_LABEL[1]: MSDOSFS: ada1: FAT12/16 volume not valid.
    GEOM_LABEL[1]: MSDOSFS: ada2: FAT12/16 volume not valid.
    GEOM_LABEL[1]: MSDOSFS: ada0p1: no FAT signature found.
    GEOM_LABEL[1]: Label for provider ada0p1 is
    gptid/fe8c7129-bc68-11df-8955-0050dad823cd.
    GEOM_LABEL[1]: MSDOSFS: ada0p2: no FAT signature found.
    GEOM_LABEL[1]: Label for provider ada0p2 is gpt/swap0.
    GEOM_LABEL[1]: Label for provider ada0p2 is
    gptid/0c0b5606-bc69-11df-8955-0050dad823cd.
    GEOM_LABEL[1]: MSDOSFS: ada0p3: no FAT signature found.
    GEOM_LABEL[1]: Label for provider ada0p3 is gpt/disk0.
    GEOM_LABEL[1]: Label for provider ada0p3 is
    gptid/2ea57c66-bc69-11df-8955-0050dad823cd.
    GEOM_LABEL[1]: MSDOSFS: ada1p1: no FAT signature found.
    GEOM_LABEL[1]: Label for provider ada1p1 is
    gptid/060c432a-6852-11df-a16c-0050dad823cd.
    GEOM_LABEL[1]: MSDOSFS: ada1p2: no FAT signature found.
    GEOM_LABEL[1]: Label for provider ada1p2 is gpt/swap1.
    GEOM_LABEL[1]: Label for provider ada1p2 is
    gptid/303e329f-6852-11df-a16c-0050dad823cd.
    GEOM_LABEL[1]: MSDOSFS: ada1p3: no FAT signature found.
    GEOM_LABEL[1]: Label for provider ada1p3 is gpt/disk1.
    GEOM_LABEL[1]: Label for provider ada1p3 is
    gptid/5bc92016-6852-11df-a16c-0050dad823cd.
    GEOM_LABEL[1]: MSDOSFS: ada2p1: no FAT signature found.
    GEOM_LABEL[1]: Label for provider ada2p1 is
    gptid/c506cc78-bc3a-11df-8066-0050dad823cd.
    GEOM_LABEL[1]: MSDOSFS: ada2p2: no FAT signature found.
    GEOM_LABEL[1]: Label for provider ada2p2 is gpt/swap2.
    GEOM_LABEL[1]: Label for provider ada2p2 is
    gptid/f5ee2146-bc3a-11df-8066-0050dad823cd.
    GEOM_LABEL[1]: MSDOSFS: ada2p3: no FAT signature found.
    GEOM_LABEL[1]: Label for provider ada2p3 is gpt/disk2.
    GEOM_LABEL[1]: Label for provider ada2p3 is
    gptid/87d467cc-bc3b-11df-8066-0050dad823cd.
    GEOM_LABEL[1]: Label gptid/0c0b5606-bc69-11df-8955-0050dad823cd removed.
    GEOM_LABEL[1]: Label gptid/303e329f-6852-11df-a16c-0050dad823cd removed.
    GEOM_LABEL[1]: Label gptid/f5ee2146-bc3a-11df-8066-0050dad823cd removed.
    GEOM_LABEL[1]: MSDOSFS: mirror/swap: no FAT signature found.
    GEOM_LABEL[1]: Label gpt/disk0 removed.
    GEOM_LABEL[1]: Label gpt/disk1 removed.
    GEOM_LABEL[1]: Label gpt/disk2 removed.

As you see labels was firstly seen, but removed at the end. I tried to 
set blank label and then correct one again, but no luck.
Any ideas what's possibly wrong here?

Problem appeared after my pool was broken and I imported it from some 
boot CD to fix this by "import -F".

Now I have unreadable output from zpool commands, like this:

         NAME                                            STATE     READ 
WRITE CKSUM
         zroot                                           ONLINE       
0     0     0
           raidz1-0                                      ONLINE       
0     0     0
             gptid/2ea57c66-bc69-11df-8955-0050dad823cd  ONLINE       
0     0     0
             gptid/5bc92016-6852-11df-a16c-0050dad823cd  ONLINE       
0     0     0
             gptid/87d467cc-bc3b-11df-8066-0050dad823cd  ONLINE       
0     0     0


-- 
Bartosz Stec

Andrey V. Elsukov

2011-Jun-15 12:12 UTC

head link

gpt labels for zfs partitions don't appear in /dev/gpt

On 15.06.2011 15:43, Bartosz Stec wrote:> As you see I have ada{0-2}p3 labeled as disk{0-2} All labeled partitions
have valid gpt id but
> zfs partitions don't have accesible gpt label in /dev/gpt:
It always worked so. Read geom(4) manual page, especially about SPOILING.
> As you see labels was firstly seen, but removed at the end. I tried to set
blank label and then
> correct one again, but no luck.
> Any ideas what's possibly wrong here?
There are two reasons:
1. glabel does not create providers for providers which are already in use.
2. `gpart modify` does not touch partition provider and it is not spoiled and
retasted.
> Problem appeared after my pool was broken and I imported it from some boot
CD to fix this by "import
> -F".
> 
> Now I have unreadable output from zpool commands, like this:
> 
>         NAME                                            STATE     READ
WRITE CKSUM
>         zroot                                           ONLINE       0    
0     0
>           raidz1-0                                      ONLINE       0    
0     0
>             gptid/2ea57c66-bc69-11df-8955-0050dad823cd  ONLINE       0    
0     0
>             gptid/5bc92016-6852-11df-a16c-0050dad823cd  ONLINE       0    
0     0
>             gptid/87d467cc-bc3b-11df-8066-0050dad823cd  ONLINE       0    
0     0
> 
You can disable gptids and this output will be changed back:
echo kern.geom.label.gptid.enable="0" >> /boot/loader.conf

-- 
WBR, Andrey V. Elsukov

freebsd stable - Jun 2011 - gpt labels for zfs partitions don't appear in /dev/gpt

gpt labels for zfs partitions don't appear in /dev/gpt

gpt labels for zfs partitions don't appear in /dev/gpt