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Full Discussion: HP-UX 11 - disk errors
Operating Systems HP-UX HP-UX 11 - disk errors Post 29482 by Kelam_Magnus on Monday 7th of October 2002 03:49:44 PM
Old 10-07-2002
Our company has created a procedure for creating a backup root disk called BROOT. All new boxes are put into production with this functionality.

It was meant for an add'l recovery disk for VG00, but it can be used to copy from one disk to another, when you might ever upgrade a Disk to a larger one.

Here is the script. We have a script that creates this script, but this can be edited and reused. This should give you something to work with.

I didn't write this, but it is very good for this type of work


root:/usr/localcw/opt/broot
# cat vgbroot.script
#!/usr/bin/ksh
exec >/usr/localcw/opt/broot/vgbroot.output 2>&1
mkdir /broot
mkdir /dev/vgbroot
mknod /dev/vgbroot/group c 64 0x030000

pvcreate -fB /dev/rdsk/c0t2d0
mkboot /dev/rdsk/c0t2d0
mkboot -a "hpux -lq" /dev/rdsk/c0t2d0
lifcp /dev/dsk/c0t2d0:AUTO -

vgcreate /dev/vgbroot /dev/dsk/c0t2d0
lvcreate -s y -C y -r n -n bstand vgbroot
lvextend -L 1 /dev/vgbroot/bstand /dev/dsk/c0t2d0
lvextend -L 300 /dev/vgbroot/bstand
lvlnboot -r /dev/vgbroot/bstand /dev/vgbroot
lvlnboot -v

umount /broot/bstand
lvcreate -s y -C y -r n -n bswap vgbroot
lvextend -L 1 /dev/vgbroot/bswap /dev/dsk/c0t2d0
lvextend -L 1000 /dev/vgbroot/bswap
lvlnboot -s /dev/vgbroot/bswap /dev/vgbroot
lvlnboot -v
grep -q "/dev/vgbroot/bswap swap swap pri=0 0 0 0" /etc/fstab
if (( $? != 0 ))
then
print "/dev/vgbroot/bswap swap swap pri=0 0 0 0" >> /etc/fstab
fi

umount /broot/bswap
lvcreate -s y -C y -r n -n broot vgbroot
lvextend -L 1 /dev/vgbroot/broot /dev/dsk/c0t2d0
lvextend -L 252 /dev/vgbroot/broot
lvlnboot -r /dev/vgbroot/broot /dev/vgbroot
lvlnboot -v

umount /broot/broot
lvcreate -s y -C y -n bopt vgbroot
lvextend -L 1 /dev/vgbroot/bopt /dev/dsk/c0t2d0
lvextend -L 1200 /dev/vgbroot/bopt
mkdir /broot/bopt
newfs /dev/vgbroot/rbopt
mount /dev/vgbroot/bopt /broot/bopt
grep -q "/dev/vgbroot/bopt /broot/bopt vxfs delaylog 0 2" /etc/fstab
if (( $? != 0 ))
then
print "/dev/vgbroot/bopt /broot/bopt vxfs delaylog 0 2" >> /etc/fstab
fi

umount /broot/bopt
lvcreate -s y -C y -n busr vgbroot
lvextend -L 1 /dev/vgbroot/busr /dev/dsk/c0t2d0
lvextend -L 1200 /dev/vgbroot/busr
mkdir /broot/busr
newfs /dev/vgbroot/rbusr
mount /dev/vgbroot/busr /broot/busr
grep -q "/dev/vgbroot/busr /broot/busr vxfs delaylog 0 2" /etc/fstab
if (( $? != 0 ))
then
print "/dev/vgbroot/busr /broot/busr vxfs delaylog 0 2" >> /etc/fstab
fi

umount /broot/busr
lvcreate -s y -C y -n bvar vgbroot
lvextend -L 1 /dev/vgbroot/bvar /dev/dsk/c0t2d0
lvextend -L 1600 /dev/vgbroot/bvar
mkdir /broot/bvar
newfs /dev/vgbroot/rbvar
mount /dev/vgbroot/bvar /broot/bvar
grep -q "/dev/vgbroot/bvar /broot/bvar vxfs delaylog 0 2" /etc/fstab
if (( $? != 0 ))
then
print "/dev/vgbroot/bvar /broot/bvar vxfs delaylog 0 2" >> /etc/fstab
fi

umount /broot/bvar
lvcreate -s y -C y -n bopenv vgbroot
lvextend -L 1 /dev/vgbroot/bopenv /dev/dsk/c0t2d0
lvextend -L 2000 /dev/vgbroot/bopenv
mkdir /broot/bopenv
newfs /dev/vgbroot/rbopenv
mount /dev/vgbroot/bopenv /broot/bopenv
grep -q "/dev/vgbroot/bopenv /broot/bopenv vxfs delaylog 0 2" /etc/fstab
if (( $? != 0 ))
then
print "/dev/vgbroot/bopenv /broot/bopenv vxfs delaylog 0 2" >> /etc/fstab
fi

umount /broot/bopenv
# The following sequence of coding was modified by Peter Gunawan
# on 5/19/2001
lvlnboot -b /dev/vgbroot/bstand
lvlnboot -r /dev/vgbroot/broot
lvlnboot -s /dev/vgbroot/bswap
lvlnboot -v /dev/vgbroot

vgcfgbackup vgbroot
cp /etc/fstab /etc/fstab.19042002
grep -v ^/dev/vgbroot /etc/fstab >/tmp/fstab
cp /tmp/fstab /etc/fstab
echo "-------- dd copy completed - psg"
 

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LEARN ABOUT V7

rp

RP(4)							     Kernel Interfaces Manual							     RP(4)

NAME

       rp - RP-11/RP03 moving-head disk

DESCRIPTION

       The  files  rp0 ... rp7 refer to sections of RP disk drive 0.  The files rp8 ... rp15 refer to drive 1 etc.  This allows a large disk to be
       broken up into more manageable pieces.

       The origin and size of the pseudo-disks on each drive are as follows:

	    disk start	   length
	    0	 0    81000
	    1	 0    5000
	    2	 5000 2000
	    3	 7000 74000
	    4-7  unassigned

       Thus rp0 covers the whole drive, while rp1, rp2, rp3 can serve usefully as a root, swap, and mounted user file system respectively.

       The rp files access the disk via the system's normal buffering mechanism and may be read  and  written  without	regard	to  physical  disk
       records.   There  is also a `raw' interface which provides for direct transmission between the disk and the user's read or write buffer.  A
       single read or write call results in exactly one I/O operation and therefore raw I/O is considerably more efficient  when  many	words  are
       transmitted.   The  names of the raw RP files begin with rrp and end with a number which selects the same disk section as the corresponding
       rp file.

       In raw I/O the buffer must begin on a word boundary.

FILES

       /dev/rp?, /dev/rrp?

SEE ALSO

       hp(4)

BUGS

       In raw I/O read and write(2) truncate file offsets to 512-byte block boundaries, and write scribbles on	the  tail  of  incomplete  blocks.
       Thus, in programs that are likely to access raw devices, read, write and lseek(2) should always deal in 512-byte multiples.

																	     RP(4)
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