在Redhat下确定需要划分的存储空间。在本例中需要进行划分的空间是从HDS AMS2000上划分到服务器的多路径存储空间。其中sddlmad为ycdb1上需要进行划分的空间,sddlmah为ycdb2上需要进行划分的空间。具体如下:
查看环境
# rpm -qa|grep device-mapper
device-mapper-event-1.02.32-1.el5
device-mapper-multipath-0.4.7-30.el5
device-mapper-1.02.32-1.el5
# rpm -qa|grep lvm2 lvm2-2.02.46-8.el5
查看空间
#fdisk -l
Disk /dev/sddlmad: 184.2 GB, 184236900352 bytes 255 heads, 63 sectors/track, 22398 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sddlmah: 184.2 GB, 184236900352 bytes
255 heads, 63 sectors/track, 22398 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes
查看存储
#cd /opt/DynamicLinkManager/bin/
#./dlnkmgr view -lu
Product : AMS
SerialNumber : 83041424 LUs : 8
iLU HDevName DevicePathID Status
0000 sddlmaa /dev/sdb 000000 Online
/dev/sdj 000008 Online
/dev/sdr 000016 Online
/dev/sdz 000017 Online
0001 sddlmab /dev/sdc 000001 Online
/dev/sdk 000009 Online
/dev/sds 000018 Online
/dev/sdaa 000019 Online
0002 sddlmac /dev/sdd 000002 Online
/dev/sdl 000010 Online
/dev/sdt 000020 Online
/dev/sdab 000021 Online
0003 sddlmad /dev/sde 000003 Online
/dev/sdm 000011 Online
/dev/sdu 000022 Online
/dev/sdac 000023 Online
0004 sddlmae /dev/sdf 000004 Online
/dev/sdn 000012 Online
/dev/sdv 000024 Online
/dev/sdad 000025 Online
0005 sddlmaf /dev/sdg 000005 Online
/dev/sdo 000013 Online
/dev/sdw 000026 Online
/dev/sdae 000027 Online
0006 sddlmag /dev/sdh 000006 Online
/dev/sdp 000014 Online
/dev/sdx 000028 Online
/dev/sdaf 000029 Online
0007 sddlmah /dev/sdi 000007 Online
/dev/sdq 000015 Online
/dev/sdy 000030 Online
/dev/sdag 000031 Online
##############################################################
4. lvm.conf的修改
为了能够正确的使用LVM,需要修改其过滤器:
#cd /etc/lvm #vi lvm.conf
# By default we accept every block device
# filter = [ "a/.*/" ]
filter = [ "a|sddlm[a-p][a-p]|.*|","r|dev/sd|" ]
例:
[root@bsrunbak etc]# ls -l lvm*
[root@bsrunbak etc]# cd lvm
[root@bsrunbak lvm]# ls
archive backup cache lvm.conf
[root@bsrunbak lvm]# more lvm.conf
[root@bsrunbak lvm]# pvs
Last login: Fri Jul 10 11:17:21 2015 from 172.17.99.198
[root@bsrunserver1 ~]#
[root@bsrunserver1 ~]#
[root@bsrunserver1 ~]# df -h
FilesystemSize Used Avail Use% Mounted on
/dev/sda4 30G 8.8G 20G 32% /
tmpfs 95G 606M 94G 1% /dev/shm
/dev/sda2 194M 33M 151M 18% /boot
/dev/sda1 200M 260K 200M 1% /boot/efi
/dev/mapper/datavg-oraclelv
50G 31G 17G 65% /oracle
172.16.110.25:/Tbackup
690G 553G 102G 85% /Tbackup
/dev/mapper/tmpvg-oradatalv
345G 254G 74G 78% /oradata
/dev/mapper/datavg-lvodc
5.0G 665M 4.1G 14% /odc
[root@bsrunserver1 ~]# pvs
PV VG Fmt Attr PSize PFree
/dev/sda5datavg lvm2 a-- 208.06g 153.06g
/dev/sddlmba tmpvg lvm2 a-- 200.00g 49.99g
/dev/sddlmbb tmpvg lvm2 a-- 200.00g 0
[root@bsrunserver1 ~]# cd /etc/lvm
[root@bsrunserver1 lvm]# more lvm.conf
# Don't have more than one filter line active at once: only one gets
used.
# Run vgscan after you change this parameter to ensure that
# the cache file gets regenerated (see below).
# If it doesn't do what you expect, check the output of 'vgscan -vvvv'.
# By default we accept every block device:
# filter = [ "a/.*/" ]
# Exclude the cdrom drive
# filter = [ "r|/dev/cdrom|" ]
# When testing I like to work with just loopback devices:
# filter = [ "a/loop/", "r/.*/" ]
# Or maybe all loops and ide drives except hdc:
# filter =[ "a|loop|", "r|/dev/hdc|", "a|/dev/ide|", "r|.*|" ]
# Use anchors if you want to be really specific
# filter = [ "a|^/dev/hda8$|", "r/.*/" ]
filter = [ "a|/dev/sddlm.*|", "a|^/dev/sda5$|", "r|.*|" ]
[root@bsrunserver1 lvm]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda4 30963708 9178396 20212448 32% /
tmpfs 99105596620228 98485368 1% /dev/shm
/dev/sda2 198337 33546154551 18% /boot
/dev/sda1 204580 260204320 1% /boot/efi
/dev/mapper/datavg-oraclelv
51606140 31486984 17497716 65% /oracle
172.16.110.25:/Tbackup
722486368 579049760 106736448 85% /Tbackup
/dev/mapper/tmpvg-oradatalv
361243236 266027580 76865576 78% /oradata
/dev/mapper/datavg-lvodc
5160576680684 4217748 14% /odc
[root@bsrunserver1 lvm]#
You have new mail in /var/spool/mail/root
[root@bsrunserver1 lvm]#
[root@bsrunserver1 lvm]# pvs
PV VG Fmt Attr PSize PFree
/dev/sda5datavg lvm2 a-- 208.06g 153.06g
/dev/sddlmba tmpvg lvm2 a-- 200.00g 49.99g
/dev/sddlmbb tmpvg lvm2 a-- 200.00g 0
[root@bsrunserver1 lvm]#
进入文件:
[root@bsrunbak lvm]# cd /opt/D*/bin
or
[root@bsrunbak bin]# pwd
/opt/DynamicLinkManager/bin
显示HDS存储卷:
[root@bsrunbak lvm]# ./dlnkmgr view -lu
1,Linux下可以在/proc/cpuinfo中看到每个cpu的详细信息。但是对于双核的cpu,在cpuinfo中会看到两个cpu。常常会让人误以为是两个单核的cpu。其实应该通过Physical Processor ID来区分单核和双核。而Physical Processor ID可以从cpuinfo或者dmesg中找到. flags 如果有 ht 说明支持超线程技术 判断物理CPU的个数可以查看physical id 的值,相同则为同一个物理CPU
2,查看内存大小:
cat /proc/meminfo |grep MemTotal
3,其他一些可以查看详细linux系统信息的命令和方法:
uname -a # 查看内核/ *** 作系统/CPU信息的linux系统信息命令
head -n 1 /etc/issue # 查看 *** 作系统版本,是数字1不是字母L
cat /proc/cpuinfo # 查看CPU信息的linux系统信息命令
hostname # 查看计算机名的linux系统信息命令
lspci -tv # 列出所有PCI设备
lsusb -tv # 列出所有USB设备的linux系统信息命令
lsmod # 列出加载的内核模块
env # 查看环境变量资源
free -m # 查看内存使用量和交换区使用量
df -h # 查看各分区使用情况
du -sh # 查看指定目录的大小
grep MemTotal /proc/meminfo # 查看内存总量
grep MemFree /proc/meminfo # 查看空闲内存量
uptime # 查看系统运行时间、用户数、负载
cat /proc/loadavg # 查看系统负载磁盘和分区
mount | column -t # 查看挂接的分区状态
fdisk -l # 查看所有分区
swapon -s # 查看所有交换分区
hdparm -i /dev/hda # 查看磁盘参数(仅适用于IDE设备)
dmesg | grep IDE # 查看启动时IDE设备检测状况网络
ifconfig # 查看所有网络接口的属性
iptables -L # 查看防火墙设置
route -n # 查看路由表
netstat -lntp # 查看所有监听端口
netstat -antp # 查看所有已经建立的连接
netstat -s # 查看网络统计信息进程
ps -ef # 查看所有进程
top # 实时显示进程状态用户
w # 查看活动用户
id # 查看指定用户信息
last # 查看用户登录日志
cut -d: -f1 /etc/passwd # 查看系统所有用户
cut -d: -f1 /etc/group # 查看系统所有组
crontab -l # 查看当前用户的计划任务服务
chkconfig –list # 列出所有系统服务
chkconfig –list | grep on # 列出所有启动的系统服务程序
rpm -qa # 查看所有安装的软件包
cat /proc/cpuinfo :查看CPU相关参数的linux系统命令
cat /proc/partitions :查看linux硬盘和分区信息的系统信息命令
cat /proc/meminfo :查看linux系统内存信息的linux系统命令
cat /proc/version :查看版本,类似uname -r
cat /proc/ioports :查看设备io端口
cat /proc/interrupts :查看中断
cat /proc/pci :查看pci设备的信息
cat /proc/swaps :查看所有swap分区的信息
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