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Главная Документация FreeBSD › FreeBSD, замена диска в пуле zfs

FreeBSD, замена диска в пуле zfs

Автор:

Статья написана 2018-07-17 14:29:12
Последние правки 2018-09-15 21:54:05

Меняем вышедший из строя диск в пуле zfs FreeBSD.

  • Исходные данные
    # uname -rs
    FreeBSD 10.4-RELEASE-p9
    
    # zpool status
      pool: tank1
     state: ONLINE
    status: Some supported features are not enabled on the pool. The pool can
            still be used, but some features are unavailable.
    action: Enable all features using 'zpool upgrade'. Once this is done,
            the pool may no longer be accessible by software that does not support
            the features. See zpool-features(7) for details.
      scan: none requested
    config:
    
            NAME                     STATE     READ WRITE CKSUM
            tank1                    ONLINE       0     0     0
              mirror-0               ONLINE       0     0     0
                ada0p3               ONLINE       0     0     0
                ada1p3               ONLINE       0     0     0
    
    errors: No known data errors
    
    Два раздела от разных дисков в зеркале.
    Но диски не вечны, и ada0 приказал долго жить. После физической замены диска на новый, видим следующее:
    # zpool status -xv
      pool: tank1
     state: DEGRADED
    status: One or more devices could not be opened.  Sufficient replicas exist for
            the pool to continue functioning in a degraded state.
    action: Attach the missing device and online it using 'zpool online'.
       see: http://illumos.org/msg/ZFS-8000-2Q
      scan: none requested
    config:
    
            NAME                     STATE     READ WRITE CKSUM
            tank1                    DEGRADED     0     0     0
              mirror-0               DEGRADED     0     0     0
                3199557894021506640  UNAVAIL      0     0     0  was /dev/ada0p3
                ada1p3               ONLINE       0     0     0
    
    errors: No known data errors
    


  • Готовим новый диск

    Смотрим, что есть на новом диске:
    # gpart show ada0
    gpart: No such geom: ada0.
    
    Пусто. Если на диск есть разделы, то выполняем команду:
    # gpart destroy -F ada0
    
    Далее, на ad0 необходимо сделать такие же разделы, как и на ada1.
    Смотрим, что есть на ada1:
    # gpart show ada1
    =>       34  468862061  ada1  GPT  (224G)
             34          6        - free -  (3.0K)
             40        128     1  freebsd-boot  (64K)
            168   33554432     2  freebsd-swap  (16G)
       33554600  435307488     3  freebsd-zfs  (208G)
      468862088          7        - free -  (3.5K)
    
    И делаем так же на ada0:
    # gpart create -s gpt ada0
    # gpart add -b 40 -s 128 -t freebsd-boot ada0
    # gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ada0
    # gpart add -s 33554432 -t freebsd-swap ada0
    # gpart add -s 435307488 -t freebsd-zfs ada0
    
    Итого:
    # gpart show ada0
    =>       34  468862061  ada0  GPT  (224G)
             34          6        - free -  (3.0K)
             40        128     1  freebsd-boot  (64K)
            168   33554432     2  freebsd-swap  (16G)
       33554600  435307488     3  freebsd-zfs  (208G)
      468862088          7        - free -  (3.5K)
    

  • Меняем раздел в zfs пуле
    # zpool replace tank1 /dev/ada0p3
    
    Смотрим статус:
    # zpool status -xv
      pool: tank1
     state: DEGRADED
    status: One or more devices is currently being resilvered.  The pool will
            continue to function, possibly in a degraded state.
    action: Wait for the resilver to complete.
      scan: resilver in progress since Tue Jul 17 15:06:40 2018
            2.78G scanned out of 50.0G at 114M/s, 0h7m to go
            2.77G resilvered, 5.55% done
    config:
    
            NAME                       STATE     READ WRITE CKSUM
            tank1                      DEGRADED     0     0     0
              mirror-0                 DEGRADED     0     0     0
                replacing-0            UNAVAIL      0     0     0
                  3199557894021506640  UNAVAIL      0     0     0  was /dev/ada0p3/old
                  ada0p3               ONLINE       0     0     0  (resilvering)
                ada1p3                 ONLINE       0     0     0
    
    errors: No known data errors
    
    Ждем окончания восстановления пула:
    # zpool status -xv
    all pools are healthy
    
    # zpool status tank1
      pool: tank1
     state: ONLINE
    status: Some supported features are not enabled on the pool. The pool can
            still be used, but some features are unavailable.
    action: Enable all features using 'zpool upgrade'. Once this is done,
            the pool may no longer be accessible by software that does not support
            the features. See zpool-features(7) for details.
      scan: resilvered 50.0G in 0h5m with 0 errors on Tue Jul 17 15:12:20 2018
    config:
    
            NAME        STATE     READ WRITE CKSUM
            tank1       ONLINE       0     0     0
              mirror-0  ONLINE       0     0     0
                ada0p3  ONLINE       0     0     0
                ada1p3  ONLINE       0     0     0
    
    errors: No known data errors
    
    Mission complete.



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