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Код: Выделить всё

 A  raidz group with N disks of size X with P parity disks can hold  approximately  (N-P)*X

Код: Выделить всё

#!/bin/sh

DISKS="ad2 ad4 ad6"
LABELS="0 1 2 3"

FIELD_OFF=16
FIELD_LEN=8

arr2int()
{
  arr=""
  res=0

  # Invert octet order
  for oct in $1; do
    arr="$oct $arr"
  done

  # Convert
  for oct in $arr; do
    oct=`printf "%d" 0x$oct`
    res=`expr -e $res \* 256 + $oct`
  done

  echo $res
}

fin=`expr 256 \* 1024`
prev=""
for DISK in $DISKS; do
  for L in $LABELS; do
    fdump="$DISK-label$L.dump"
    # First block pos
    off=`expr 128 \* 1024 + $FIELD_OFF`
    n=0
    while [ $off -lt $fin ]; do
      # Get octets array
      str=`od -t xC -A n -v -j $off -N $FIELD_LEN $fdump`
      str=`echo $str | sed 's/^ *\([^ ].*[^ ]\) *$/\1/'`
      # Convert to integer
      txg=`arr2int "$str"`
      printf "txg %10u disk %s label %s n %3u\n" $txg $DISK $L $n
      off=`expr $off + 1024`
      n=`expr $n + 1`
    done
  done
done

Код: Выделить всё

# gpart show 

 =>        34  2930277101  ada0  GPT  (1.4T)
          34         128     1  freebsd-boot  (64k)
         162        1886        - free -  (943k)
        2048     8388608     2  freebsd-swap  (4.0G)
     8390656  2921886479     3  freebsd-zfs  (1.4T)

=>        34  2930277101  ada1  GPT  (1.4T)
          34           6        - free -  (3.0k)
          40         128     1  freebsd-boot  (64k)
         168        1880        - free -  (940k)
        2048     8388608     2  freebsd-swap  (4.0G)
     8390656  2921886472     3  freebsd-zfs  (1.4T)
  2930277128           7        - free -  (3.5k)

# zdb -eX
Configuration for import:
        vdev_children: 1
        version: 28
        pool_guid: 1487408506722295672
        name: 'tank'
        state: 0
        vdev_tree:
            type: 'root'
            id: 0
            guid: 1487408506722295672
            children[0]:
                type: 'mirror'
                id: 0
                guid: 14949755914536867893
                whole_disk: 0
                metaslab_array: 30
                metaslab_shift: 33
                ashift: 12
                asize: 1496001019904
                is_log: 0
                create_txg: 4
                children[0]:
                    type: 'disk'
                    id: 0
                    guid: 12181262761882874517
                    path: '/dev/gpt/disk0'
                    phys_path: '/dev/gpt/disk0'
                    whole_disk: 1
                    DTL: 209
                    create_txg: 4
                children[1]:
                    type: 'disk'
                    id: 1
                    guid: 10476129156643193055
                    phys_path: '/dev/gpt/disk1'
                    whole_disk: 1
                    DTL: 212
                    create_txg: 4
                    resilvering: 1
                    path: '/dev/dsk/gpt/disk1'

zdb: can't open 'tank': no such directory

# zpool import

  pool: tank
    id: 1487408506722295672
 state: FAULTED
status: One or more devices contains corrupted data.
action: The pool cannot be imported due to damaged devices or data.
	The pool may be active on another system, but can be imported using
	the '-f' flag.
   see: http://www.sun.com/msg/ZFS-8000-5E
config:

	tank                      FAULTED  corrupted data
	  mirror-0                ONLINE
	    12181262761882874517  UNAVAIL  corrupted data
	    10476129156643193055  UNAVAIL  corrupted data