Replacing a DiskSuite (Solaris Volume Manager) disk

A short guide on how to recover a broken DiskSuite mirror.

  1. Check metastat information:
    # metastat -c
    d30              m   34GB d31 (maint) d32
    
      d31 s 34GB c0t0d0s3 (maint) d32 s 34GB c0t1d0s3
    d20 m 4.0GB d21 (maint) d22
      d21 s 4.0GB c0t0d0s1 (maint) d22 s 4.0GB c0t1d0s1
    d10 m 30GB d11 (maint) d12
      d11 s 30GB c0t0d0s0 (maint) d12 s 30GB c0t1d0s0
    hsp001 h -
  2. Remove the broken replicas from the metadb :
    # metadb -i
            flags           first blk       block count
          W   p  l          16              8192            /dev/dsk/c0t0d0s7
          W   p  l          8208            8192            /dev/dsk/c0t0d0s7
         a m  p  luo        16              8192            /dev/dsk/c0t1d0s7
         a    p  luo        8208            8192            /dev/dsk/c0t1d0s7
    . . .
    
    # metadb -d /dev/dsk/c0t0d0s7
  3. Replace the broken disk
  4. Check that the new disk is visible:
    # format
    Searching for disks...done
    
    AVAILABLE DISK SELECTIONS:
    
      0. c0t0d0 /pci@1c,600000/scsi@2/sd@0,0 1. c0t1d0 /pci@1c,600000/scsi@2/sd@1,0
  5. Copy the partition table from the healthy to the new disk:
    # prtvtoc /dev/rdsk/c0t1d0s0 | fmthard -s - \
    /dev/rdsk/c0t0d0s0
    fmthard:  New volume table of contents now in place.
  6. Create metadb replicas (for example, 2 copies in slice 7):
    # metadb -a -c2 /dev/rdsk/c0t0d0s7
  7. Verifying the metadb:
    # metadb -i
    
      flags first blk block count
    a u 16 8192 /dev/dsk/c0t0d0s7 a u 8208 8192 /dev/dsk/c0t0d0s7 a p luo 16 8192 /dev/dsk/c0t1d0s7 a p luo 8208 8192 /dev/dsk/c0t1d0s7
  8. “Metareplace” the failed slices:
    # metastat | fgrep replace
    Invoke: metareplace d30 c0t0d0s3
    Invoke: metareplace d20 c0t0d0s1
    Invoke: metareplace d10 c0t0d0s0
    
    # metareplace -e d30 c0t0d0s3
    d30: device c0t0d0s3 is enabled
    # metareplace -e d20 c0t0d0s1
    d20: device c0t0d0s1 is enabled
    # metareplace -e d10 c0t0d0s0
    d10: device c0t0d0s0 is enabled
    
  9. Periodically check the resyncing status:
    # metastat | fgrep esync
    State: Resyncing
    Resync in progress: 0 % done
    State: Resyncing
    c0t0d0s3          0     No       Resyncing   Yes
    State: Resyncing
    Resync in progress: 19 % done
    State: Resyncing
    c0t0d0s1          0     No       Resyncing   Yes
    State: Resyncing
    Resync in progress: 2 % done
    State: Resyncing
    c0t0d0s0          0     No       Resyncing   Yes

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