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Date:      Fri, 02 Jul 1999 00:39:55 +0200
From:      Palle Girgensohn <girgen@partitur.se>
To:        freebsd-questions@freebsd.org
Subject:   vinum for root partition?
Message-ID:  <377BEE3B.A10C4D8@partitur.se>

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Hi!

I'm just setting up a system with two scsi drives, using vinum for
mirroring only. Is it possible to use vinum for the also root partition
somehow? I realize it not simple. 

Here's my disklabel (same for both drives):
#        size   offset    fstype   [fsize bsize bps/cpg]
  a:   144585        0    4.2BSD     1024  8192    16   # (Cyl.    0 -
8)
  b:   803250   144585      swap                        # (Cyl.    9 -
58)
  c: 17928698        0    unused        0     0         # (Cyl.    0 -
1116*)
  e: 16980863   947835    4.2BSD     1024  8192    16   # (Cyl.   59 -
1116*)

My plan is to sync the the 'a' partitions, so if one disk dies, the
other root partition is useable. But, I guess the system will have to
reboot if the drive crashes, since the root fs will be unusable.

I thought, maybe there's some way to fool the system with some disklabel
"magic", or perhaps I can remount a different fs instead of remounting
root read-write. Just a wild thought. Any comments? Maybe it's better to
mfs mount the root somehow? I'm not sure how to do that in this case...

/Palle


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