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RE: onstat -g rea almot 100 queue there !!!

Posted By: John Whittenberger
Date: Friday, 11 July 2008, at 11:32 a.m.

In Response To: RE: onstat -g rea almot 100 queue there !!! (Penza Kenneth at MITTS)

RE: Set up for raw spaces in Red Hat

Here is what we use to set up raw space. The f_partition is run only
once.
The script sits in /etc/init.d and is run on reboot or when we
make a change.

John

======================
...

function f_partition
# custom partitioning using fdisk to match the SAN.
# Failover system may have the same setup.
{
echo f_partition

for i in sddz sdea sdeb sdec sded sdee \

sdef sdeg sdeh sdei
do
sfdisk /dev/${i} << EOF
unit: sectors
/dev/${i}: start= 16065, size= 4176900, Id=83
/dev/${i}: start= 4192965, size= 4176900, Id=83
/dev/${i}: start= 8369865, size= 4176900, Id=83
/dev/${i}: start= 12546765, size= 29382885, Id=85
/dev/${i}: start= 12562830, size= 4176900, Id=83
/dev/${i}: start= 16755795, size= 4176900, Id=83
/dev/${i}: start= 20948760, size= 4176900, Id=83
/dev/${i}: start= 25141725, size= 4176900, Id=83
/dev/${i}: start= 29334690, size= 4176900, Id=83
/dev/${i}: start= 33527655, size= 4176900, Id=83
/dev/${i}: start= 37720620, size= 4176900, Id=83
EOF

done
}

function f_LUN_raw_block
# Create the Informix chunk spaces. Update /etc/init.d/informix_LUN
# with changes made here. Note the altenating nature of the
# block names. sdb1 is controller 1, sdc1 is controller 2, etc.

{
echo f_LUN_raw_block
case $( id -un ) in

root ) ;;

* ) echo "Run as root" ; exit ;;
esac
while read raw block chunk junk
do

case $raw in

'#' ) continue ;;

esac

if [ ! -L /dbspaces/$chunk ] ; then

#su - informix -c "ln -s $raw /dbspaces/$chunk"

ln -s $raw /dbspaces/$chunk

chown informix:informix $raw

chown informix:informix $block

fi

raw $raw $block
done <<- !
#
# Change this to create spaces across the SAN LUNs sddz - sdei
# Each LUN has partitions 1 - 11
# Do not use extended partition 4 ( sddz4, etc )
# /mclogs is on /dev/sdej1, /h in on /dev/sdej2
# and /dpsr is on /dev/sdej3 which are not in this group of partitions
#
# Check performance of LUN
# iostat -x /dev/sddz1 -x /dev/sdea1 -x /dev/sdeb1 5
#
# WARNING: if you change the order of the items in this list you
# probably need to delete the corresponding link in /dbspaces.
#

/dev/raw/raw1 /dev/sddz1 rootdbs

/dev/raw/raw2 /dev/sdea1 ifmx_sys_0 # physical &
logical

/dev/raw/raw3 /dev/sdeb1 ifmx_sys_1 # logs

/dev/raw/raw4 /dev/sdec1 ifmx_sys_2

/dev/raw/raw5 /dev/sded1 mdmetc_d00 # metcast
(d)bspace

/dev/raw/raw6 /dev/sdee1 mdmetc_b00 # metcast
(b)lobspace

/dev/raw/raw7 /dev/sdef1 mdchnl_d00 # channels
(d)bspace

/dev/raw/raw8 /dev/sdeg1 mdchnl_b00 # channels
(b)lobspace

/dev/raw/raw9 /dev/sdeh1 mdchnl_s00 # channels (s)mart
blob

/dev/raw/raw10 /dev/sdei1 mdimg_d00 # image
(d)bspace

/dev/raw/raw11 /dev/sddz2 mdimg_b00 # image
(b)lobspace

/dev/raw/raw12 /dev/sdea2 mdimg_b01 # image
(b)lobspace
# /dev/raw/raw13 /dev/sdeb2 mdtxt_d00 # txt
# /dev/raw/raw14 /dev/sdec2 mdtxt_b00
# /dev/raw/raw15 /dev/sded2 mdrem_d00 # rem
# /dev/raw/raw16 /dev/sdee2 mdrem_b00
# /dev/raw/raw17 /dev/sdef2 # future use

/dev/raw/raw18 /dev/sdeg2 opars_d00 # opars

/dev/raw/raw19 /dev/sdeh2 mdgrid_d00 # grid (d)bspace

/dev/raw/raw20 /dev/sddi2 obs_fep_00

/dev/raw/raw21 /dev/sddz3 obs_fep_01

/dev/raw/raw22 /dev/sdea3 obs_fep_02

/dev/raw/raw23 /dev/sdeb3 obs_fep_03

/dev/raw/raw24 /dev/sdec3 obs_fep_04

/dev/raw/raw25 /dev/sded3 obs_fep_05
# /dev/raw/raw26 /dev/sdee3 # future use

/dev/raw/raw27 /dev/sdef3 mdgrid_b00 # grid (b)lobspace

/dev/raw/raw28 /dev/sdeg3 mdgrid_b01

/dev/raw/raw29 /dev/sdeh3 mdgrid_b02

/dev/raw/raw30 /dev/sdei3 mdgrid_b03
#
# # 4 is extended partition
#

/dev/raw/raw31 /dev/sddz5 mdgrid_b04

/dev/raw/raw32 /dev/sdea5 mdgrid_b05

/dev/raw/raw33 /dev/sdeb5 mdgrid_b06

...

/dev/raw/raw98 /dev/sdeg11 mdgrid_b71

/dev/raw/raw99 /dev/sdeh11 mdgrid_b72

/dev/raw/raw100 /dev/sdei11 mdgrid_b73
# #
# # There is a limit of 255 raw partitions
# #

!
}

#--- main ----------------------------------------------------------

# root space for the Informix db space links.
[[ -d /dbspaces ]] || {

mkdir /dbspaces

chown informix:informix /dbspaces

chmod 775 /dbspaces
}
#
case $1 in
start )

f_LUN_raw_block

;;
stop )

echo "Stopping informix_LUN"

;;
partition )

f_partition

;;
esac

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