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Date:      Mon, 24 Oct 2016 16:40:39 +0100
From:      Claudiu Ciurdariu <claudiu.ciurdariu@gmail.com>
To:        freebsd-hackers@freebsd.org
Subject:   FreeBSD 11 boot problem in a UEFI ZFS-root with 4K native HDDs setup
Message-ID:  <CAEXyMHBh%2BTHVVB2e23KdQsvCyGtsVetsnT0=oCD%2Biir2SvS0VA@mail.gmail.com>

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Trying to boot FreeBSD 11 RELEASE in UEFI mode after installing the OS with
root on a 4K native 2-disk ZFS mirror and getting the error below:

>> FreeBSD EFI boot block
Loader path: /boot/loader.efi

  Initializing modules: ZFS UFS
  Probing 14 block devices...........*.+ done
    ZFS found the following pools zroot
    UFS found no partitions
ZFS: i/o error -  all block copies unavailable
ZFS: can't read MOS of pool zroot
ZFS: i/o error -  all block copies unavailable
ZFS: can't read MOS of pool zroot
Failed to load '/boot/loader.efi'
panic: No bootable partitions found!


The partition layout looks like this:

# gpart show
=>        6  488378629  ada0  GPT  (1.8T)
          6        200     1  efi  (800K)
        206         50        - free -  (200K)
        256  488378368     2  freebsd-zfs  (1.8T)
  488378624         11        - free -  (44K)

=>        6  488378629  ada1  GPT  (1.8T)
          6        200     1  efi  (800K)
        206         50        - free -  (200K)
        256  488378368     2  freebsd-zfs  (1.8T)
  488378624         11        - free -  (44K)


# gpart list
Geom name: ada0
modified: false
state: OK
fwheads: 16
fwsectors: 63
last: 488378634
first: 6
entries: 128
scheme: GPT
Providers:
1. Name: ada0p1
   Mediasize: 819200 (800K)
   Sectorsize: 4096
   Stripesize: 0
   Stripeoffset: 24576
   Mode: r0w0e0
   rawuuid: 1f029d6d-99f4-11e6-819b-001e67e6cc2f
   rawtype: c12a7328-f81f-11d2-ba4b-00a0c93ec93b
   label: efiboot0
   length: 819200
   offset: 24576
   type: efi
   index: 1
   end: 205
   start: 6
2. Name: ada0p2
   Mediasize: 2000397795328 (1.8T)
   Sectorsize: 4096
   Stripesize: 0
   Stripeoffset: 1048576
   Mode: r1w1e1
   rawuuid: 1f496f99-99f4-11e6-819b-001e67e6cc2f
   rawtype: 516e7cba-6ecf-11d6-8ff8-00022d09712b
   label: zfs0
   length: 2000397795328
   offset: 1048576
   type: freebsd-zfs
   index: 2
   end: 488378623
   start: 256
Consumers:
1. Name: ada0
   Mediasize: 2000398909440 (1.8T)
   Sectorsize: 4096
   Mode: r1w1e2

Geom name: ada1
modified: false
state: OK
fwheads: 16
fwsectors: 63
last: 488378634
first: 6
entries: 128
scheme: GPT
Providers:
1. Name: ada1p1
   Mediasize: 819200 (800K)
   Sectorsize: 4096
   Stripesize: 0
   Stripeoffset: 24576
   Mode: r0w0e0
   rawuuid: 1faf567b-99f4-11e6-819b-001e67e6cc2f
   rawtype: c12a7328-f81f-11d2-ba4b-00a0c93ec93b
   label: efiboot1
   length: 819200
   offset: 24576
   type: efi
   index: 1
   end: 205
   start: 6
2. Name: ada1p2
   Mediasize: 2000397795328 (1.8T)
   Sectorsize: 4096
   Stripesize: 0
   Stripeoffset: 1048576
   Mode: r1w1e1
   rawuuid: 1fc2d874-99f4-11e6-819b-001e67e6cc2f
   rawtype: 516e7cba-6ecf-11d6-8ff8-00022d09712b
   label: zfs1
   length: 2000397795328
   offset: 1048576
   type: freebsd-zfs
   index: 2
   end: 488378623
   start: 256
Consumers:
1. Name: ada1
   Mediasize: 2000398909440 (1.8T)
   Sectorsize: 4096
   Mode: r1w1e2


And the ZFS dataset:

# zfs list
NAME                 USED  AVAIL  REFER  MOUNTPOINT
zroot                301M  1.76T    96K  /mnt/zroot
zroot/ROOT           299M  1.76T    96K  none
zroot/ROOT/default   299M  1.76T   299M  /mnt
zroot/tmp            128K  1.76T   128K  /mnt/tmp
zroot/usr            384K  1.76T    96K  /mnt/usr
zroot/usr/home        96K  1.76T    96K  /mnt/usr/home
zroot/usr/ports       96K  1.76T    96K  /mnt/usr/ports
zroot/usr/src         96K  1.76T    96K  /mnt/usr/src
zroot/var            588K  1.76T    96K  /mnt/var
zroot/var/audit       96K  1.76T    96K  /mnt/var/audit
zroot/var/crash       96K  1.76T    96K  /mnt/var/crash
zroot/var/log        108K  1.76T   108K  /mnt/var/log
zroot/var/mail        96K  1.76T    96K  /mnt/var/mail
zroot/var/tmp         96K  1.76T    96K  /mnt/var/tmp


The HDDs are 2 Tohsiba 4Kn spinning disks:

# camcontrol devlist
<AHCI SGPIO Enclosure 1.00 0001>   at scbus4 target 0 lun 0 (ses0,pass0)
<TOSHIBA MG04ACA200A FP2A>         at scbus7 target 0 lun 0 (ada0,pass1)
<TOSHIBA MG04ACA200A FP2A>         at scbus8 target 0 lun 0 (ada1,pass2)
<AHCI SGPIO Enclosure 1.00 0001>   at scbus11 target 0 lun 0 (ses1,pass3)
<Virtual CDROM 1.00>               at scbus12 target 0 lun 0 (pass4,cd0)
<Virtual Floppy 1.00>              at scbus12 target 0 lun 1 (da0,pass5)


Any idea what the issue might be?


Thanks,
Claudiu



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