Splitting root mirrirs - Panic

Hi,

When we want to patch a server the most common tihng we do is split the mirrors patch and then resync after.

for example:

d20: Mirror
    Submirror 0: d21
      State: Okay        
    Submirror 1: d22
      State: Okay        
    Pass: 1
    Read option: roundrobin (default)
    Write option: parallel (default)
    Size: 4212864 blocks (2.0 GB)

d21: Submirror of d20
    State: Okay        
    Size: 4212864 blocks (2.0 GB)
    Stripe 0:
        Device     Start Block  Dbase        State Reloc Hot Spare
        c0t0d0s1          0     No            Okay   Yes

d22: Submirror of d20
    State: Okay        
    Size: 4212864 blocks (2.0 GB)
    Stripe 0:
        Device     Start Block  Dbase        State Reloc Hot Spare
        c0t1d0s1          0     No            Okay   Yes

d10: Mirror
    Submirror 0: d11