[SunHELP] Do you need to break the mirror when replacing a bad hard drive ?

[sunhelp at sunhelp.org]

With half the metadb's bad, won't the box refuse to boot(I thought it
needed 50% + 1 to boot)?  

===============================
Ed Mitchell (ed<-at->the7thbeer.com)
Finger for PGP public key
===============================
This boxen's uptime stats....
  3:14pm  up 24 day(s),  4:22,  2 users,  load average: 0.02, 0.01, 0.02


On Tue, 3 Jul 2001 ymui at royalsunalliance.ca wrote:

> Hello Administrators,
> 
> We have RADI 1 (mirror) set up by DiskSuite on the boot disk.  There is a
> hardware error on the alternate disk and Metastat shows :
> 
> d2: Submirror of d0
>     State: Needs maintenance
>     Invoke: metareplace d0 c0t1d0s0 <new device>
> 
> Metadb -i :
>        flags           first blk       block count
>      a m  p  luo        16              1034            /dev/dsk/c0t0d0s3
>      a    p  luo        1050            1034            /dev/dsk/c0t0d0s3
>      a    p  luo        2084            1034            /dev/dsk/c0t0d0s3
>       W   p  l          16              1034            /dev/dsk/c0t1d0s3
>       W   p  l          1050            1034            /dev/dsk/c0t1d0s3
>       W   p  l          2084            1034            /dev/dsk/c0t1d0s3
> 
> There are only 2 slices and the other slice (swap partition) is fine.
> 
> Before replacing the problem hard disk which requires a reboot (as these
> are internal disks) do you need to break the mirror first ?  Or, just shut
> down the system, replace the hard disk, boot, partition and recreate the
> metadb on the new drive and synchronise the mirror ?
> 
> Much appreciated.
> 
> Yingha.
> 
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