檢視當前掛載硬碟的常用命令：fdisk -llsblk
重新掃瞄scsi命令：partprobe /dev/sdb
檢視新掛載的硬碟/dev/sdb
[root@hadoop001 ~]
ls /dev/sd*
/dev/sda /dev/sda1 /dev/sda2 /dev/sdb
/dev/sdb是新加的鍵盤
[root@hadoop001 ~]
fdisk -l
disk /dev/sda: 42.9 gb, 42949672960 bytes, 83886080 sectors
units = sectors of 1 * 512 = 512 bytes
sector size (logical/physical): 512 bytes / 512 bytes
i/o size (minimum/optimal): 512 bytes / 512 bytes
disk label type: dos
disk identifier: 0x000939d4
device boot start end blocks id system
/dev/sda1 * 2048 2099199 1048576 83 linux
/dev/sda2 2099200 83886079 40893440 8e linux lvm
disk /dev/sdb: 53.7 gb, 53687091200 bytes, 104857600 sectors
units = sectors of 1 * 512 = 512 bytes
sector size (logical/physical): 512 bytes / 512 bytes
i/o size (minimum/optimal): 512 bytes / 512 bytes
units = sectors of 1 * 512 = 512 bytes
sector size (logical/physical): 512 bytes / 512 bytes
i/o size (minimum/optimal): 512 bytes / 512 bytes
units = sectors of 1 * 512 = 512 bytes
sector size (logical/physical): 512 bytes / 512 bytes
i/o size (minimum/optimal): 512 bytes / 512 bytes
fdisk /dev/sdb
# 按n一路回車預設分割槽乙個
# 按t 輸入3選硬碟格式 輸入8e 修改分割槽格式為lvm
# 按wq 儲存配置
/dev/sdb1
[root@hadoop001 ~]
fdisk -l
disk /dev/sda: 42.9 gb, 42949672960 bytes, 83886080 sectors
units = sectors of 1 * 512 = 512 bytes
sector size (logical/physical): 512 bytes / 512 bytes
i/o size (minimum/optimal): 512 bytes / 512 bytes
disk label type: dos
disk identifier: 0x000939d4
device boot start end blocks id system
/dev/sda1 * 2048 2099199 1048576 83 linux
/dev/sda2 2099200 83886079 40893440 8e linux lvm
disk /dev/sdb: 53.7 gb, 53687091200 bytes, 104857600 sectors
units = sectors of 1 * 512 = 512 bytes
sector size (logical/physical): 512 bytes / 512 bytes
i/o size (minimum/optimal): 512 bytes / 512 bytes
disk label type: dos
disk identifier: 0xf14e5714
device boot start end blocks id system
/dev/sdb1 2048 104857599 52427776 8e linux lvm
units = sectors of 1 * 512 = 512 bytes
sector size (logical/physical): 512 bytes / 512 bytes
i/o size (minimum/optimal): 512 bytes / 512 bytes
units = sectors of 1 * 512 = 512 bytes
sector size (logical/physical): 512 bytes / 512 bytes
i/o size (minimum/optimal): 512 bytes / 512 bytes
[root@hadoop001 ~] pvcreate /dev/sdb1
physical volume "/dev/sdb1" successfully created.
root@hadoop001 ~] vgs
vg #pv #lv #sn attr vsize vfree
centos 1 2 0 wz--n- <39.00g 4.00m
[root@hadoop001 ~] vgextend centos /dev/sdb1
volume group "centos" successfully extended
size of logical volume centos/root changed from <35.12 gib (8990 extents) to <85.12 gib (21790 extents).
logical volume centos/root successfully resized.
系統重新讀取大小
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0 spinodes=0
data = bsize=4096 blocks=9205760, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal bsize=4096 blocks=4495, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 9205760 to 22312960
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