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Date:      Sat, 28 Mar 2009 23:22:20 -0400
From:      Mike Manlief <mhm@manlief.com>
To:        questions@freebsd.org
Subject:   gvinum RAID 5+0?
Message-ID:  <49CEE96C.2080707@manlief.com>

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Hello,

How does one configure gvinum for RAID 5+0 (distributed parity nested in 
stripe)?  The configuration I've tried seems to be incorrect.

Config:
drive a device /dev/ad10
drive b device /dev/ad12
drive c device /dev/ad14
drive d device /dev/ad4
drive e device /dev/ad6
drive f device /dev/ad8

volume storage
   plex org striped 512k
      plex org raid5 512k
         sd length 953869m drive a
         sd length 953869m drive b
         sd length 953869m drive c
      plex org raid5 512k
         sd length 953869m drive d
         sd length 953869m drive e
         sd length 953869m drive f

What gvinum creates:
6 drives:
D f                     State: up    /dev/ad8    A: 0/953869 MB (0%)
D e                     State: up    /dev/ad6    A: 0/953869 MB (0%)
D d                     State: up    /dev/ad4    A: 0/953869 MB (0%)
D c                     State: up    /dev/ad14    A: 0/953869 MB (0%)
D b                     State: up    /dev/ad12    A: 0/953869 MB (0%)
D a                     State: up    /dev/ad10    A: 0/953869 MB (0%)

1 volume:
V storage               State: up    Plexes:       3    Size:       1863 GB

3 plexes:
P storage.p2         R5 State: up    Subdisks:     3    Size:       1863 GB
P storage.p1         R5 State: up    Subdisks:     3    Size:       1863 GB
P storage.p0          S State: down    Subdisks:     0    Size:          
0  B

6 subdisks:
S storage.p2.s2         State: up    D: f            Size:        931 GB
S storage.p2.s1         State: up    D: e            Size:        931 GB
S storage.p2.s0         State: up    D: d            Size:        931 GB
S storage.p1.s2         State: up    D: c            Size:        931 GB
S storage.p1.s1         State: up    D: b            Size:        931 GB
S storage.p1.s0         State: up    D: a            Size:        931 GB

Thanks,
Mike Manlief



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