AIX dump 设置检查方法及脚本

dump主要需要检查以下几点：

1.always allow dump是否已经设成TRUE，具体检查方法如下：

[ecdump /dump/guoshh]$ sysdumpdev -l
primary /dev/dumplv
secondary /dev/sysdumpnull
copy directory /var/adm/ras
forced copy flag TRUE
always allow dump TRUE
dump compression ON
type of dump traditional

2.fullcore是否设置为true.

[ecdump /dump/guoshh]$ lsattr -El sys0|grep fullcore
fullcore true Enable full CORE dump True

3.dump大小是否够大

需要多大检查方法如下：

[ecdump /dump/guoshh]$ sysdumpdev -e
0453-041 Estimated dump size in bytes: 623063859

目前是多大检查方法如下：

[ecdump /dump/guoshh]$ lsvg -l rootvg|head -2;lsvg -l rootvg|grep sysdump
rootvg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
dumplv sysdump 5 5 1 open/syncd N/A
[ecdump /dump/guoshh]$ lsvg rootvg|grep -i size
VG STATE: active PP SIZE: 256 megabyte(s)
LTG size (Dynamic): 256 kilobyte(s) AUTO SYNC: no

目前的大小等于dumplv的lps数乘以rootvg的ppsize再乘以1024再乘以1024
如上例中该机器的目前的dump设置的大小是：

dumpsize=52561024*1024=1342177280 > 623063859

因此此机器dump设置是正确的。

以下是dump检查脚本：

!/usr/bin/ksh

echo "xxxxxxxxxxxxxxxxxx"

echo "Dump Setting Check"

echo "xxxxxxxxxxxxxxxxxx"

echo "---------------------------"

echo "1.Always allow dump setting"

echo "---------------------------"

aldump=sysdumpdev -l|grep always|awk '{print $4}'

if [[ $aldump = TRUE ]]

then

echo "------------------------------------------------------"

echo "[MESSAGE]:Now Always allow dump is setting to $aldump."

echo "[MESSAGE]:Always allow dump setting is correct."

echo "------------------------------------------------------"

else

echo "------------------------------------------------------"

echo "[ERROR]:Now Always allow dump is setting to $aldump."

echo "[ERROR]:Always allow dump setting is incorrect."

echo " Pls change it to TRUE."

echo "------------------------------------------------------"

fi

echo "------------------"

echo "2.fullcore setting"

echo "------------------"

fullcore=lsattr -El sys0|grep fullcore|awk '{print $2}'

if [[ $fullcore = true ]]

then

echo "-----------------------------------------------"

echo "[MESSAGE]:Now fullcore is setting to $fullcore."

echo "[MESSAGE]:fullcore setting is correct."

echo "-----------------------------------------------"

else

echo "---------------------------------------------"

echo "[ERROR]:Now fullcore is setting to $fullcore."

echo "[ERROR]:fullcore setting is incorrect."

echo " Pls change it to true."

echo "---------------------------------------------"

fi

echo "xxxxxxxxxxxxxxx"

echo "Dump Size Check"

echo "xxxxxxxxxxxxxxx"

PPSIZE=lsvg rootvg|grep "PP SIZE"|awk '{print $7}'|awk -F "(" '{print $1}'

PPNUM=lsvg rootvg|grep "PP SIZE"|awk '{print $6}'

DUMPPP=lsvg -l rootvg|grep sysdump|awk '{print $3}'

DUMPS=sysdumpdev -e|awk -F : '{print $2}'

if [[ $PPSIZE = megabyte ]]

then

dumpdev=expr $PPNUM * $DUMPPP * 1024 * 1024

else

dumpdev=expr $PPNUM * $DUMPPP * 1024 * 1024 * 1024

fi

if [[ $DUMPS -le $dumpdev ]]

then

echo "--------------------------"

echo "[MESSAGE]:Dump Size is OK!"

echo "--------------------------"

else

dumpsize=expr $DUMPS / 1024 / 1024

echo "-----------------------------------------------------------"

echo "[ERROR]:Dump Size for this OS need largh then $dumpsize MB." 

echo "[ERROR]:Dump size is too small, pls extend it."

echo "-----------------------------------------------------------"

fi

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