[DragonFlyBSD - Bug #2264] DragonFly can't be installed on bigger than 2TB volumes

[Sascha Wildner via Redmine]

Issue #2264 has been updated by Sascha Wildner.


AHCI attached disks will give 2TB maximum it seems.

AHCI itself reports the size correctly:

ahci0.1: Found DISK "Hitachi HDS723030ALA640 MKAOA3B0" serial="MK0311YHG3U8MA"
ahci0.1: tags=32/32 satacap=170e satafea=005e NCQ=YES capacity=2861588.46MB
ahci0.1: f85=7469 f86=bc41 f87=4763 WC=enabled RA=enabled SEC=freezing
ahci0.1: Set dummy xfer mode to 46

But then CAM's da then goes:

da1 at ahci0 bus 1 target 0 lun 0
da1: <SATA Hitachi HDS72303 MKAO> Fixed Direct Access SCSI-4 device
da1: Serial Number MK0311YHG3U8MA
da1: 150.000MB/s transfers
da1: 2097151MB (4294967295 512 byte sectors: 255H 63S/T 267349C)

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Bug #2264: DragonFly can't be installed on bigger than 2TB volumes
http://bugs.dragonflybsd.org/issues/2264

Author: Francois Tigeot
Status: In Progress
Priority: Normal
Assignee: Sascha Wildner
Category: 
Target version: 


The DragonFly installer tries to run fdisk unconditionally on target devices
and thus fails with > 2TB volumes.

This is what I've done to get DragonFly installed on a 8TB RAID volume:

1. Don't try to use the installer, log in as root on the live cd

2. gpt create /dev/da0

3. gpt boot /dev/da0

  This stage adds a 256MB gpt boot slice with a disklabel32 filesystem type
  FIXME: Size should be updated to 768MB, like the /boot partitions created by the installer

4. gpt add -t swap -s 16777216 /dev/da0

  This creates a 8GB swap slice

5. gpt add -t dfly /dev/da0

  This creates a slice covering the rest of the da0 volume with a DragonFly filesystem type.
  FIXME: I'm not sure what is meant by DragonFly filesystem. maybe Hammer should be presented as
  a choice instead.

6. disklabel the /dev/da0s0 boot slice, install bootstrap code

  disklabel32 -B -r -w /dev/da0s0 auto
  disklabel32 -r -e /dev/da0s0
  
  create a 'a' partition covering the entire slice

7. format /boot filesystem

  newfs /dev/da0s0a

8. format / filesystem

  newfs_hammer -L BIGVOLUME /dev/da0s2

9. mount and install /boot

  mount /dev/da0s0a /mnt
  cpdup -I -v /boot /mnt

  vi /mnt/loader.conf
    vfs.root.mountfrom="hammer:da0s2"

  umount /mnt

10. install the future /

  mount -t hammer /dev/da0s2 /mnt
  cpdup -I -v / /mnt
  cd /mnt
  rmdir etc
  mv etc.hdd etc
  
  vi etc/fstab

11. reboot

  The first stage bootloader will show an unknown F1 choice.
  Just use F2 (DragonFly) and it will boot

The new system is able to run single-user, some /var directories
which were not present on the livecd need to be created by hand
to go multi-user

The system is otherwise fully functional


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