After update attempt and crash boot pool needs imported every reboot

TAG_TEAM · December 22, 2025, 3:07am

My issues started when I went to update and the installer crashed on grub install. Ever since any install requires me to manually import my boot pool. There seems to be a bit of flaky kernel stuff right before it “tainted kernel” but I don’t think this has anything to do with it.

My problem pretty much mirrors this post, but after 12 hours of trying I can’t figure out what commands I need to run to straighten the boot pool import issue at boot time.

root@truenas[~]# lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
sda      8:0    0 279.4G  0 disk
├─sda1   8:1    0     1M  0 part
├─sda2   8:2    0   512M  0 part
└─sda3   8:3    0 278.9G  0 part
sdb      8:16   0   3.6T  0 disk
├─sdb1   8:17   0     2G  0 part
└─sdb2   8:18   0   3.6T  0 part
sdc      8:32   0   3.6T  0 disk
├─sdc1   8:33   0     2G  0 part
└─sdc2   8:34   0   3.6T  0 part
sdd      8:48   0   3.6T  0 disk
├─sdd1   8:49   0     2G  0 part
└─sdd2   8:50   0   3.6T  0 part
sde      8:64   0   3.6T  0 disk
├─sde1   8:65   0     2G  0 part
└─sde2   8:66   0   3.6T  0 part
sdf      8:80   0   3.6T  0 disk
├─sdf1   8:81   0     2G  0 part
└─sdf2   8:82   0   3.6T  0 part
sdg      8:96   0 279.4G  0 disk
├─sdg1   8:97   0     1M  0 part
├─sdg2   8:98   0   512M  0 part
└─sdg3   8:99   0 278.9G  0 part
sdh      8:112  0   3.6T  0 disk
├─sdh1   8:113  0     2G  0 part
└─sdh2   8:114  0   3.6T  0 part
sdi      8:128  0   3.6T  0 disk
├─sdi1   8:129  0     2G  0 part
└─sdi2   8:130  0   3.6T  0 part
sdj      8:144  0   3.6T  0 disk
├─sdj1   8:145  0     2G  0 part
└─sdj2   8:146  0   3.6T  0 part
sdk      8:160  0   3.6T  0 disk
└─sdk1   8:161  0   3.6T  0 part
sdl      8:176  0   3.6T  0 disk
├─sdl1   8:177  0     2G  0 part
└─sdl2   8:178  0   3.6T  0 part
sdm      8:192  0   3.6T  0 disk
├─sdm1   8:193  0     2G  0 part
└─sdm2   8:194  0   3.6T  0 part
sdn      8:208  0   3.6T  0 disk
├─sdn1   8:209  0     2G  0 part
└─sdn2   8:210  0   3.6T  0 part
zd0    230:0    0     6T  0 disk
zd16   230:16   0   400G  0 disk

root@truenas[~]# sudo grep -i import /var/log/middlewared.log
[2025/12/21 17:44:17] (DEBUG) PoolService.import_on_boot():474 - Creating '/data/zfs' (if it doesnt already exist)
[2025/12/21 17:44:17] (DEBUG) PoolService.import_on_boot():481 - Creating '/data/zfs/zpool.cache' (if it doesnt already exist)
[2025/12/21 17:44:17] (DEBUG) PoolService.import_on_boot():509 - Calling pool.post_import
[2025/12/21 17:44:22] (DEBUG) PoolService.import_on_boot():511 - Finished calling pool.post_import
[2025/12/21 20:59:23] (DEBUG) PoolService.import_on_boot():474 - Creating '/data/zfs' (if it doesnt already exist)
[2025/12/21 20:59:23] (DEBUG) PoolService.import_on_boot():481 - Creating '/data/zfs/zpool.cache' (if it doesnt already exist)
[2025/12/21 20:59:23] (DEBUG) PoolService.import_on_boot_impl():316 - Importing 'tank01' with guid: '2181697046397539470'
[2025/12/21 20:59:33] (DEBUG) PoolService.import_on_boot_impl():328 - Done importing 'tank01' with guid '2181697046397539470'
[2025/12/21 20:59:39] (DEBUG) PoolService.import_on_boot_impl():316 - Importing 'tank02' with guid: '5306718830756100272'
[2025/12/21 20:59:44] (DEBUG) PoolService.import_on_boot_impl():328 - Done importing 'tank02' with guid '5306718830756100272'
[2025/12/21 20:59:46] (DEBUG) PoolService.import_on_boot():509 - Calling pool.post_import
[2025/12/21 20:59:54] (DEBUG) PoolService.import_on_boot():511 - Finished calling pool.post_import
[2025/12/21 21:23:23] (DEBUG) PoolService.import_on_boot():449 - Creating '/data/zfs' (if it doesnt already exist)
[2025/12/21 21:23:23] (DEBUG) PoolService.import_on_boot():456 - Creating '/data/zfs/zpool.cache' (if it doesnt already exist)
[2025/12/21 21:23:23] (DEBUG) PoolService.import_on_boot_impl():291 - Importing 'tank01' with guid: '2181697046397539470'
[2025/12/21 21:23:35] (DEBUG) PoolService.import_on_boot_impl():303 - Done importing 'tank01' with guid '2181697046397539470'
[2025/12/21 21:23:37] (DEBUG) PoolService.import_on_boot_impl():291 - Importing 'tank02' with guid: '5306718830756100272'
[2025/12/21 21:23:41] (DEBUG) PoolService.import_on_boot_impl():303 - Done importing 'tank02' with guid '5306718830756100272'
[2025/12/21 21:23:43] (DEBUG) PoolService.import_on_boot():484 - Calling pool.post_import
[2025/12/21 21:23:54] (DEBUG) PoolService.import_on_boot():486 - Finished calling pool.post_import

root@truenas[~]# blkid
/dev/sdf2: LABEL="tank02" UUID="5306718830756100272" UUID_SUB="17799103521383573371" BLOCK_SIZE="4096" TYPE="zfs_member" PARTUUID="3bdd7718-cd0b-11ef-a6bc-ecf4bbc5e69c"
/dev/sdd2: LABEL="tank02" UUID="5306718830756100272" UUID_SUB="568537629472314381" BLOCK_SIZE="4096" TYPE="zfs_member" PARTUUID="3cb57d42-cd0b-11ef-a6bc-ecf4bbc5e69c"
/dev/sdm2: LABEL="tank01" UUID="2181697046397539470" UUID_SUB="16690850299477514372" BLOCK_SIZE="4096" TYPE="zfs_member" PARTUUID="1827be23-cd0b-11ef-a6bc-ecf4bbc5e69c"
/dev/sdb2: LABEL="tank02" UUID="5306718830756100272" UUID_SUB="2008273000518643155" BLOCK_SIZE="4096" TYPE="zfs_member" PARTUUID="3c94cfd8-cd0b-11ef-a6bc-ecf4bbc5e69c"
/dev/sdk1: LABEL="tank02" UUID="5306718830756100272" UUID_SUB="12091096426078504891" BLOCK_SIZE="4096" TYPE="zfs_member" PARTLABEL="data" PARTUUID="257c160e-2867-46b8-af8d-7ee0bbe571d1"
/dev/sdi2: LABEL="tank02" UUID="5306718830756100272" UUID_SUB="4732197840267897671" BLOCK_SIZE="4096" TYPE="zfs_member" PARTUUID="3c89cd11-cd0b-11ef-a6bc-ecf4bbc5e69c"
/dev/sdg3: UUID="d174d662-edfe-ce1f-3cd0-5c21e368d921" UUID_SUB="d2f03ee6-a7bd-4beb-90dd-b746ee29d604" LABEL="swap0" TYPE="linux_raid_member" PARTUUID="da22f7e5-892d-4748-a63d-a73d2af7bfae"
/dev/sdg2: LABEL_FATBOOT="EFI" LABEL="EFI" UUID="96F0-618C" BLOCK_SIZE="512" TYPE="vfat" PARTUUID="cb903344-106a-4fb4-b9e7-14f9cadde5fd"
/dev/sde2: LABEL="tank02" UUID="5306718830756100272" UUID_SUB="3875394343833234486" BLOCK_SIZE="4096" TYPE="zfs_member" PARTUUID="3ca78b79-cd0b-11ef-a6bc-ecf4bbc5e69c"
/dev/sdn2: LABEL="tank01" UUID="2181697046397539470" UUID_SUB="10077732973717801839" BLOCK_SIZE="4096" TYPE="zfs_member" PARTUUID="1793344e-cd0b-11ef-a6bc-ecf4bbc5e69c"
/dev/sdc2: LABEL="tank01" UUID="2181697046397539470" UUID_SUB="11057746715972587053" BLOCK_SIZE="4096" TYPE="zfs_member" PARTUUID="183062b0-cd0b-11ef-a6bc-ecf4bbc5e69c"
/dev/sdl2: LABEL="tank01" UUID="2181697046397539470" UUID_SUB="18422170760817614343" BLOCK_SIZE="4096" TYPE="zfs_member" PARTUUID="15f4d860-cd0b-11ef-a6bc-ecf4bbc5e69c"
/dev/sda2: LABEL_FATBOOT="EFI" LABEL="EFI" UUID="9667-FD34" BLOCK_SIZE="512" TYPE="vfat" PARTUUID="70416374-6afb-4928-8b6f-810d04321064"
/dev/sda3: UUID="d174d662-edfe-ce1f-3cd0-5c21e368d921" UUID_SUB="d2f03ee6-a7bd-4beb-90dd-b746ee29d604" LABEL="swap0" TYPE="linux_raid_member" PARTUUID="4178e45f-570b-458a-9776-2c85c43b9d6e"
/dev/sdj2: LABEL="tank01" UUID="2181697046397539470" UUID_SUB="10192918936713283090" BLOCK_SIZE="4096" TYPE="zfs_member" PARTUUID="184d74f1-cd0b-11ef-a6bc-ecf4bbc5e69c"
/dev/sdh2: LABEL="tank01" UUID="2181697046397539470" UUID_SUB="4970885891270444678" BLOCK_SIZE="4096" TYPE="zfs_member" PARTUUID="18437ebd-cd0b-11ef-a6bc-ecf4bbc5e69c"
/dev/sdf1: PARTUUID="3bcb9fcc-cd0b-11ef-a6bc-ecf4bbc5e69c"
/dev/sdd1: PARTUUID="3c7d0e3a-cd0b-11ef-a6bc-ecf4bbc5e69c"
/dev/sdm1: PARTUUID="17ede026-cd0b-11ef-a6bc-ecf4bbc5e69c"
/dev/sdb1: PARTUUID="3c63446a-cd0b-11ef-a6bc-ecf4bbc5e69c"
/dev/zd0: PTUUID="c46c3341-43dd-4a18-903e-3708ff67e795" PTTYPE="gpt"
/dev/sdi1: PARTUUID="3c484843-cd0b-11ef-a6bc-ecf4bbc5e69c"
/dev/sdg1: PARTUUID="9ce91960-4bbd-42df-9575-413abc12d1c8"
/dev/sde1: PARTUUID="3c566418-cd0b-11ef-a6bc-ecf4bbc5e69c"
/dev/zd16: PTUUID="e19ee14b-c2af-46c5-8084-67ac5239cf42" PTTYPE="gpt"
/dev/sdn1: PARTUUID="1781a96b-cd0b-11ef-a6bc-ecf4bbc5e69c"
/dev/sdc1: PARTUUID="17fa3c7b-cd0b-11ef-a6bc-ecf4bbc5e69c"
/dev/sdl1: PARTUUID="15e4ad2c-cd0b-11ef-a6bc-ecf4bbc5e69c"
/dev/sda1: PARTUUID="9b8c4435-75dd-4761-b944-1b1ccf514bee"
/dev/sdj1: PARTUUID="180d5b25-cd0b-11ef-a6bc-ecf4bbc5e69c"
/dev/sdh1: PARTUUID="181609a1-cd0b-11ef-a6bc-ecf4bbc5e69c"

Below is what I see when I reboot and have to manually import the boot-pool, I am using two 300GB 10K drives for the boot/OS install. They are the two 2279.4GB drives above. “sda” and “sdg.”

I have tried everything but follow the directions exactly in the other post because I don’t know what to fill in where that gentleman has his SAMSUNG DRIVES.

Oh, and here is this as well. Hope any of this helps.

root@truenas[~]# zpool list -v
NAME                                       SIZE  ALLOC   FREE  CKPOINT  EXPANDSZ   FRAG    CAP  DEDUP    HEALTH  ALTROOT
boot-pool                                  278G  6.43G   272G        -         -     0%     2%  1.00x    ONLINE  -
  mirror-0                                 278G  6.43G   272G        -         -     0%  2.31%      -    ONLINE
    sda3                                   279G      -      -        -         -      -      -      -    ONLINE
    sdg3                                   279G      -      -        -         -      -      -      -    ONLINE
tank01                                    21.8T  6.22T  15.6T        -         -    34%    28%  1.00x    ONLINE  /mnt
  raidz2-0                                21.8T  6.22T  15.6T        -         -    34%  28.5%      -    ONLINE
    sdl2                                  3.64T      -      -        -         -      -      -      -    ONLINE
    sdn2                                  3.64T      -      -        -         -      -      -      -    ONLINE
    sdh2                                  3.64T      -      -        -         -      -      -      -    ONLINE
    sdm2                                  3.64T      -      -        -         -      -      -      -    ONLINE
    sdc2                                  3.64T      -      -        -         -      -      -      -    ONLINE
    sdj2                                  3.64T      -      -        -         -      -      -      -    ONLINE
tank02                                    21.8T  12.3T  9.55T        -         -     0%    56%  1.00x    ONLINE  /mnt
  raidz2-0                                21.8T  12.3T  9.55T        -         -     0%  56.2%      -    ONLINE
    sdf2                                  3.64T      -      -        -         -      -      -      -    ONLINE
    sde2                                  3.64T      -      -        -         -      -      -      -    ONLINE
    sdi2                                  3.64T      -      -        -         -      -      -      -    ONLINE
    sdb2                                  3.64T      -      -        -         -      -      -      -    ONLINE
    sdd2                                  3.64T      -      -        -         -      -      -      -    ONLINE
    257c160e-2867-46b8-af8d-7ee0bbe571d1  3.64T      -      -        -         -      -      -      -    ONLINE
root@truenas[~]# zpool status -v
  pool: boot-pool
 state: ONLINE
config:

        NAME        STATE     READ WRITE CKSUM
        boot-pool   ONLINE       0     0     0
          mirror-0  ONLINE       0     0     0
            sda3    ONLINE       0     0     0
            sdg3    ONLINE       0     0     0

errors: No known data errors

  pool: tank01
 state: ONLINE
  scan: scrub repaired 0B in 04:52:55 with 0 errors on Wed Nov 26 04:53:06 2025
config:

        NAME        STATE     READ WRITE CKSUM
        tank01      ONLINE       0     0     0
          raidz2-0  ONLINE       0     0     0
            sdl2    ONLINE       0     0     0
            sdn2    ONLINE       0     0     0
            sdh2    ONLINE       0     0     0
            sdm2    ONLINE       0     0     0
            sdc2    ONLINE       0     0     0
            sdj2    ONLINE       0     0     0

errors: No known data errors

  pool: tank02
 state: ONLINE
  scan: scrub repaired 0B in 05:25:19 with 0 errors on Tue Dec 16 05:25:21 2025
config:

        NAME                                      STATE     READ WRITE CKSUM
        tank02                                    ONLINE       0     0     0
          raidz2-0                                ONLINE       0     0     0
            sdf2                                  ONLINE       0     0     0
            sde2                                  ONLINE       0     0     0
            sdi2                                  ONLINE       0     0     0
            sdb2                                  ONLINE       0     0     0
            sdd2                                  ONLINE       0     0     0
            257c160e-2867-46b8-af8d-7ee0bbe571d1  ONLINE       0     0     0

errors: No known data errors

TAG_TEAM · December 22, 2025, 3:54am

And where do I go to put my system specs in for a “signature?” (Or pop-out?) It was easy on the old forum…

Dell R720xd 2RU Rack Server

CPU 2 X Intel® Xeon® processor E5-2600

256GB of ECC RAM

12 4TB Seagate 7200RPM SAS HDD’s

2 300GB Seagate 10K SAS Boot HDDD’s

TrueNas Scale 25.10.1

bacon · December 22, 2025, 9:07am

In your output you can see how sdg3 and sda3 are recognized as linux_raid_member instead of ZFS partitions.

/dev/sdg3: UUID="d174d662-edfe-ce1f-3cd0-5c21e368d921" UUID_SUB="d2f03ee6-a7bd-4beb-90dd-b746ee29d604" LABEL="swap0" TYPE="linux_raid_member" PARTUUID="da22f7e5-892d-4748-a63d-a73d2af7bfae"
/dev/sda3: UUID="d174d662-edfe-ce1f-3cd0-5c21e368d921" UUID_SUB="d2f03ee6-a7bd-4beb-90dd-b746ee29d604" LABEL="swap0" TYPE="linux_raid_member" PARTUUID="4178e45f-570b-458a-9776-2c85c43b9d6e"

If the installer failed to wipe of the start of the partition then I’d consider that a bug. Older versions of TrueNAS Scale had that issue during regular pool creation, which caused issue when creating new pools on previously used drives. But they did fix that eventually. Maybe they didn’t fix the installer.

The commands to erase the wrong signatures would be the following. Please note that the disk names used in the commands (/dev/sdg3 and /dev/sda3) may change after reboot, so make sure to adapt them as required. It would be best to use the commands if the pool is not mounted, but it is possible to add the --force argument. I haven’t heard of anyone who had issues as a result of doing these commands - but in general they could be dangerous. Make sure to have a config backup.

wipefs --backup --all -t linux_raid_member /dev/sdg3
wipefs --backup --all -t linux_raid_member /dev/sda3

As an additional safeguard you can show the list of signatures using these commands:

wipefs /dev/sdg3
wipefs /dev/sda3

The linux raid signatures should be at the beginning of the partition, which is safe to erase due to not being used by ZFS.

TAG_TEAM · December 22, 2025, 6:06pm

Thank you so very much for pointing me in the right direction. I would probably have figured this out off of the other post, if they wouldn’t have had those non Linux sounding drive id’s. Anyway, can’t thank you enough!- Happy holidays.

For future reference, I had to use the - -force argument since it was my boot pool and couldn’t be unmounted…

wipefs --backup --all -t linux_raid_member /dev/sdg3 --force
wipefs --backup --all -t linux_raid_member /dev/sda3 --force