Solaris Volume Manager Components

Commands

GUI

smc

Manage state database replicas

• metadb
  
  • -a: add
    
    • -f: force: overwrite existing data
    • -c n: count, number of replica on each slice

    # metadb –a –c 2 c1t1d0s7 c2t1d0s7 c3t1d0s7

  • -d: delete all replicas on a slice
    

    # metadb –d c3t1d0s7

  • -i: info

Information on logical volumes and their status

• metastat [<volume>]
  
  • -p: print in md.tab format

Manage logical volumes

• metainit: create logical volumes
  
  • Soft partition: logical volume on a part of a physical partition or disk. As long as space remains on the device, you can make additional soft partitions.

# metainit -p d<number> <device> <soft partition size>

# metainit -p d20 c0t1d0s6 10G

• RAID 0
  

  # metainit d<number> <length> <width> <device> [<width> <device>]...
  

  # metainit d1 2 2 c1t1d0s6 c2t1d0s6 3 c0t1d0s5 c1t1d0s5 c2t1d0s5
  

• <length> is the number of concatenations
• <width> is the number of stripes in each concatenation
• -f: force creation even if data is present. Data can be preserved if width=1.
• RAID 1
  

  # metainit -m d<number> <logical volume>
  

  # metainit -m d10 d1
  

  RAID 5
  

  # metainit -r d<number> <device>...
  

  # metainit -r d20 c0t1d0s5 c1t1d0s5 c2t1d0s5
  

     Hot spare pool
  

  # metainit -hsp<number>  <device>...
  

  # metainit -hsp010 c1t1d0s5 c2t1d0s5

• Soft partitions

• # metainit d<number> –p <device> <size>

  # metainit d20 -p c1t3d0s2 4g

  
  

  
  

  
  

Files

•  /etc/lvm/md.tab: default location for reading (metainit) and writing (metastat) metadevice configuration



• /etc/lvm/md.cf: system privat file with meatainit state (as in md.tab)



• /etc/lvm/mddb.cf: metastate database locations



• /kernel/drv/md.conf: kernel file with metastate database info (do not edit) and volume manager configuration info (e.g. maximum number of logical volumes)