对大å¤æ°ç³»ç»ç®¡çåæ¥è¯´æ©å Linux æå¡å¨çç£ç空é´æ¯æ¥å¸¸çå·¥ä½ä¹ä¸ãå æ¤è¿ç¯æç« ä¼éè¿ä½¿ç¨ Linux å½ä»¤ï¼å¨ CentOS 7 ç³»ç»ä¸æ¼ç¤ºä¸äºç®åçæä½æ¥éª¤æ¥æ©å æ¨çç£ç空é´èä¸éè¦éå¯æ¨çç产æå¡å¨ãå ³äºæ©å åå¢å æ°çç£çå° Linux ç³»ç»ï¼æ们ä¼æåå¤ç§æ¹æ³åå¤ç§å¯è¡æ§ï¼å¯ææ¨æééæ©æéç¨çä¸ç§ã
å¨èææºå®¢æ·ç«¯æ©å ç£ç空é´:
å¨ä¸º Linux ç³»ç»å¢å ç£çå·ä¹åï¼æ¨é¦å éè¦æ·»å ä¸åæ°çç©çç£çï¼æå¨ VMware vShereãVMware å·¥ä½ç«ä»¥åä½ ä½¿ç¨çå ¶å®èæç¯å¢è½¯ä»¶ä¸è¿è¡è®¾ç½®æ¥å¢å ä¸åèæç£çç容éã
2. æ£æ¥ç£ç空é´:
è¿è¡å¦ä¸å½ä»¤æ¥æ£æ¥å½åç£ç空é´å¤§å°ã
# df -h
# fdisk -l
å¯ä»¥çå°ï¼è½ç¶æ们已ç»å¨å端ç»å ¶å¢å å° 50 GB ç空é´ï¼ä½æ¤æ¶çæ»ç£ç大å°ä»ç¶ä¸º 10 GBã
3. æ©å±ç©ºé´èæ ééå¯èææº
ç°å¨è¿è¡å¦ä¸å½ä»¤ï¼éè¿éæ°æ«æ SCSI ï¼æ³¨ï¼Small Computer System Interface å°å计ç®æºç³»ç»æ¥å£ï¼æ»çº¿å¹¶æ·»å SCSI 设å¤ï¼ç³»ç»å°±å¯ä»¥æ©å±æä½ç³»ç»çç©çå·ç£ç空é´ï¼èä¸ä¸éè¦éå¯èææºã
# ls /sys/class/scsi_host/
# echo "- - -" > /sys/class/scsi_host/host0/scan
# echo "- - -" > /sys/class/scsi_host/host1/scan
# echo "- - -" > /sys/class/scsi_host/host2/scan
使ç¨ä¸é¢çå½ä»¤æ¥æ£æ¥ SCSI 设å¤çå称ï¼ç¶åéæ°æ«æ SCSI æ»çº¿ã
# ls /sys/class/scsi_device/
# echo 1 > /sys/class/scsi_device/0\:0\:0\:0/device/rescan
# echo 1 > /sys/class/scsi_device/2\:0\:0\:0/device/rescan
å¦ä¸å¾æ示ï¼ä¼éæ°æ«æ SCSI æ»çº¿ï¼éåæ们å¨èææºå®¢æ·ç«¯è®¾ç½®çç£ç大å°ä¼æ£å¸¸æ¾ç¤ºã
4. å建æ°ç£çååº:
ä¸æ¦å¨ç³»ç»ä¸å¯ä»¥çå°æ©å±çç£ç空é´ï¼å°±å¯ä»¥è¿è¡å¦ä¸å½ä»¤æ¥æ ¼å¼åæ¨çç£ç以å建ä¸ä¸ªæ°çååºã请æå¦ä¸æä½æ¥éª¤æ¥æ©å æ¨çç©çç£çå·ã
# fdisk /dev/sda
Welcome to fdisk (util-linux 2.23.2) press the 'm' key for help
Command (m for help): m
Command action
a toggle a bootable flag
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition
g create a new empty GPT partition table
G create an IRIX (SGI) partition table
l list known partition types
m print this menu
n add a new partition
o create a new empty DOS partition table
p print the partition table
q quit without saving changes
s create a new empty Sun disklabel
t change a partition's system id
u change display/entry units
v verify the partition table
w write table to disk and exit
x extra functionality (experts only)
Command (m for help):
é®å ¥ 'p' æ¥æ¥çå½åçååºè¡¨ä¿¡æ¯ï¼ç¶åé®å ¥ 'n' é®æ¥å建ä¸ä¸ªæ°ç主ååºï¼éæ©ææå¯ç¨çæåºã ä½¿ç¨ 't' å½ä»¤æ¹åç£çç±»å为 'Linux LVM'ï¼ç¶åéæ©ç¼ç '8e' æè é»è®¤ä¸éï¼å®é»è®¤çç±»åç¼ç 为 '83'ã
ç°å¨è¾å ¥ 'w' æ¥ä¿åååºè¡¨ä¿¡æ¯å¹¶ä¸éåºå½ä»¤ç¯å¢ï¼å¦ä¸ç¤ºï¼
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
WARNING: Re-reading the partition table failed with error 16: Device or resource busy.
The kernel still uses the old table. The new table will be used at
the next reboot or after you run partprobe(8) or kpartx(8)
5. å建ç©çå·:
æ ¹æ®ä¸è¿°æ示ï¼è¿è¡ 'partprob' æ 'kpartx' å½ä»¤ä»¥ä½¿ååºè¡¨çæï¼ç¶å使ç¨å¦ä¸çå½ä»¤æ¥å建æ°çç©çå·ã
# partprobe
# pvresize /dev/sda3
è¦æ£æ¥æ°å建çå·ï¼è¿è¡å¦ä¸çå½ä»¤å¯ä»¥çåºæ°çç©çå·æ¯å¦å·²ç»è¢«å建ï¼æ¯å¦å¯ç¨ãæ¥ä¸æ¥ï¼æ们就å¯ä»¥ä½¿ç¨è¿ä¸ªæ°çç©çå·æ¥æ©å± 'centos' å·ç»äºï¼å¦ä¸ç¤ºï¼
# pvdisplay
# vgextend centos /dev/sda3
6. æ©å±é»è¾å·:
ç°å¨æ们使ç¨å¦ä¸çå½ä»¤æ©å±é»è¾å·ï¼ä»¥å¢å æ们系ç»æ£ä½¿ç¨çç£ç空é´ã
# lvextend -L +40G /dev/mapper/centos-root
ä¸æ¦è¿åå¢å æåçæ¶æ¯ï¼å°±å¯ä»¥è¿è¡å¦ä¸å½ä»¤æ¥æ©å±æ¨çé»è¾å·å¤§å°ã
# xfs_growfs /dev/mapper/centos-root
'/' ååºç大å°å·²ç»æåçå¢å äºï¼å¯ä»¥ä½¿ç¨ 'df' å½ä»¤æ¥æ£æ¥æ¨ç£ç驱å¨å¨ç大å°ãå¦å¾ç¤ºã
7. éè¿å¢å æ°çç£çæ¥æ©å æ ¹ååºèä¸ç¨éå¯ç³»ç»:
è¿æ¯ç¬¬äºç§æ¹æ³ï¼å®ä½¿ç¨çå½ä»¤é常ç®åï¼ ç¨æ¥å¢å CentOS 7 ç³»ç»ä¸é»è¾å·ç©ºé´å¤§å°ã
æ以第ä¸æ¥æ¯æå¼æ¨çèææºå®¢æ·ç«¯ç设置页é¢ï¼ç¹å» âå¢å â æ纽ï¼ç¶å继ç»ä¸ä¸æ¥æä½ã
éæ©æ°ç£çæéè¦çé 置信æ¯ï¼å¦ä¸å¾æ示çï¼éæ©æ°ç£çç大å°åå®çç±»åã
ç¶åè¿å ¥æå¡ç«¯éå¤å¦ä¸çå½ä»¤æ¥æ«ææ¨çç£ç设å¤ï¼ä»¥ä½¿æ°ç£çå¨ç³»ç»ä¸å¯è§ã
# echo "- - -" > /sys/class/scsi_host/host0/scan
# echo "- - -" > /sys/class/scsi_host/host1/scan
# echo "- - -" > /sys/class/scsi_host/host2/scan
ååºæ¨ç SCSI 设å¤çå称ï¼
# ls /sys/class/scsi_device/
# echo 1 > /sys/class/scsi_device/1\:0\:0\:0/device/rescan
# echo 1 > /sys/class/scsi_device/2\:0\:0\:0/device/rescan
# echo 1 > /sys/class/scsi_device/3\:0\:0\:0/device/rescan
# fdisk -l
ä¸æ¦æ°å¢çç£çå¯è§ï¼å°±å¯ä»¥è¿è¡ä¸é¢çå½ä»¤æ¥å建æ°çç©çå·ï¼ç¶åå¢å å°å·ç»ï¼å¦ä¸ç¤ºã
# pvcreate /dev/sdb
# vgextend centos /dev/sdb
# vgdisplay
ç°å¨æ ¹æ®æ¤ç£çç空é´å¤§å°æ¥æ©å±é»è¾å·ï¼ç¶åæ·»å å°æ ¹ååºã
# lvextend -L +20G /dev/mapper/centos-root
# xfs_growfs /dev/mapper/centos-root
# df -h
ç»è®º:
å¨ Linux CentOS 7 ç³»ç»ä¸ç®¡çç£çååºçæä½è¿ç¨æ¯é常ç®åçï¼å¯ä»¥ä½¿ç¨è¿ç¯æç« æè¿°çæä½æ¥éª¤æ¥æ©å æ¨çä»»æé»è¾å·çç£ç空é´ãæ¨ä¸éè¦éå¯ç产线ä¸çæå¡å¨ï¼åªæ¯ç®åçéæ«æä¸ SCSI 设å¤ï¼åæ©å±æ¨æ³è¦ç LVMï¼é»è¾å·ç®¡çï¼ãæ们å¸æè¿æç« å¯¹æ¨æç¨ã请éæçå表æç¨çè¯è®ºå建议ã