Date: Sat, 13 May 2006 19:39:56 +0100 From: Andrew Basterfield <bob@skq.ath.cx> To: freebsd-sparc64@freebsd.org Subject: gvinum root Message-ID: <20060513193956.44b26835@snot.privnet>
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Hi
I want to move to mirrored root using gvinum on 6.1-RELEASE/sparc64.
First I need to build my setup on my second disk da1
I have tried using da1c as my gvinum drive but I found gvinum trod on
my disklabel, so now I have slice 'h' for gvinum that skips cylinder 0
and I use VTOC compatible disklabel so I can have overlapping
slices.
[bob@spoogle ~]$ sudo disklabel da1
# /dev/da1:
text: FreeBSD8G cyl 4924 alt 2 hd 27 sec 133
bytes/sector: 512
sectors/cylinder: 3591
sectors/unit: 17682084
8 partitions:
#
# Size is in sectors.
# Offset is in cylinders.
# size offset tag flag
# ---------- ---------- ---------- ----
a: 1052163 2 root wm
c: 17682084 0 backup wu
h: 17678493 1 unassigned wu
The root filesystem needs to begin at the start of cylinder 2 so I
have an driveoffset that should consume all of the space in cylinder 1
minus 265 sectors for the gvinum config.
3591 sec/track - 265 = 3326 sectors offset
gvinum config:
#drive disk0 device /dev/da0h
drive disk1 device /dev/da1h
volume root
#plex org concat
#sd length 512m driveoffset 3326s drive disk0
plex org concat
sd length 512m driveoffset 3326s drive disk1
Now I don't understand why /dev/gvinum/root and /dev/da1a don't point to
the same disk area?
This is what I am trying to follow
http://216.239.59.104/search?q=cache:rrHJabrK314J:list.droso.net/9/60876+freebsd+vinum+offset+sparc64&hl=en&gl=uk&ct=clnk&cd=4
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