添加新硬盘到新的分区(xfs/ext4) 添加新分区
转载请注明：http://www.cnblogs.com/juandx/p/5618162.html
这篇文章介绍怎么添加一块新的硬盘，然后将其添加到一个新的分区或者一个已有的分区，比如增加根分区的大小
比如在virtualbox中添加的硬盘也可以用这样的
添加新分区
fdisk -l
可以看到新的硬盘 /dev/sdb
fdisk /dev/sdb
输入m查看提示
输入n添加分区
输入1新建一个分区
然后默认回车2次创建成功(有人说第二次按w保存，但是我直接回车好像也没问题额)
格式化分区 mkfs -t xfs /dev/sdb
新建一个自己想要挂载的目录 mkdir /opt/data/data1
然后 mount -t xfs /dev/sdb /opt/data/data1
df -lhT可以看到信息，ok了
添加新硬盘到新的分区(xfs/ext4)
fdisk -l
可以看到新的硬盘 /dev/sdb
fdisk /dev/sdb
输入m查看提示
输入n添加分区
输入1新建一个分区
然后默认回车2次创建成功(有人说第二次按w保存，但是我直接回车好像也没问题额)
格式化分区 mkfs -t xfs /dev/sdb
查看pv(物理卷)
[[email protected] /]# pvdisplay
--- Physical volume ---
PV Name /dev/sda2
VG Name centos
PV Size 7.51 GiB / not usable 3.00 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 1922
Free PE 10
Allocated PE 1912
PV UUID 8AV96r-QBvP-Hy6Q-uP1l-YI4b-UYom-GgIUNV
创建pv
[[email protected] /]# pvcreate /dev/sdb
WARNING: xfs signature detected on /dev/sdb at offset 0. Wipe it? [y/n]: y
Wiping xfs signature on /dev/sdb.
Physical volume "/dev/sdb" successfully created
[[email protected] /]# pvdisplay
--- Physical volume ---
PV Name /dev/sda2
VG Name centos
PV Size 7.51 GiB / not usable 3.00 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 1922
Free PE 10
Allocated PE 1912
PV UUID 8AV96r-QBvP-Hy6Q-uP1l-YI4b-UYom-GgIUNV
"/dev/sdb" is a new physical volume of "20.78 GiB"
--- NEW Physical volume ---
PV Name /dev/sdb
VG Name
PV Size 20.78 GiB
Allocatable NO
PE Size 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID OjyuLL-5f4X-BoVB-hZBS-AJpZ-IeMV-JO6UHF
查看vg(卷组)
[[email protected] /]# vgdisplay
--- Volume group ---
VG Name centos
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 3
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 1
Act PV 1
VG Size 7.51 GiB
PE Size 4.00 MiB
Total PE 1922
Alloc PE / Size 1912 / 7.47 GiB
Free PE / Size 10 / 40.00 MiB
VG UUID iLRzhR-myQz-XQwG-XBnd-yH2V-2vhu-VWTtgm
增加卷组
[[email protected] /]# vgextend centos /dev/sdb
Volume group "centos" successfully extended
查看lv(卷组)
[[email protected] /]# lvdisplay
--- Logical volume ---
LV Path /dev/centos/swap
LV Name swap
VG Name centos
LV UUID dBjVT5-KvtT-t4zS-hWkh-cDvn-rXch-hc7SaA
LV Write Access read/write
LV Creation host, time localhost, 2016-02-22 22:43:17 +0800
LV Status available
# open 2
LV Size 820.00 MiB
Current LE 205
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:1
--- Logical volume ---
LV Path /dev/centos/root
LV Name root
VG Name centos
LV UUID 6IJGJT-QEyI-bsQ2-O180-hRcI-T5U8-QBUcMA
LV Write Access read/write
LV Creation host, time localhost, 2016-02-22 22:43:17 +0800
LV Status available
# open 1
LV Size 6.67 GiB
Current LE 1707
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:0
看看现在卷组的情况
[[email protected] /]# vgdisplay
--- Volume group ---
VG Name centos
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 2
Act PV 2
VG Size 28.28 GiB
PE Size 4.00 MiB
Total PE 7240
Alloc PE / Size 1912 / 7.47 GiB
Free PE / Size 5328 / 20.81 GiB
VG UUID iLRzhR-myQz-XQwG-XBnd-yH2V-2vhu-VWTtgm
看看现在逻辑卷的情况
[[email protected] /]# lvdisplay
--- Logical volume ---
LV Path /dev/centos/swap
LV Name swap
VG Name centos
LV UUID dBjVT5-KvtT-t4zS-hWkh-cDvn-rXch-hc7SaA
LV Write Access read/write
LV Creation host, time localhost, 2016-02-22 22:43:17 +0800
LV Status available
# open 2
LV Size 820.00 MiB
Current LE 205
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:1
--- Logical volume ---
LV Path /dev/centos/root
LV Name root
VG Name centos
LV UUID 6IJGJT-QEyI-bsQ2-O180-hRcI-T5U8-QBUcMA
LV Write Access read/write
LV Creation host, time localhost, 2016-02-22 22:43:17 +0800
LV Status available
# open 1
LV Size 6.67 GiB
Current LE 1707
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:0
增加物理卷到根目录，可以看到根目录是在/dev/centos/root
[[email protected] /]# lvextend -L +20.81G /dev/centos/root
Rounding size to boundary between physical extents: 20.81 GiB
Size of logical volume centos/root changed from 6.67 GiB (1707 extents) to 27.48 GiB (7035 extents).
Logical volume root successfully resized.
现在还没有增加，因为还没有更新
[[email protected] /]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 6.7G 5.5G 1.3G 82% /
devtmpfs 1.9G 0 1.9G 0% /dev
tmpfs 1.9G 0 1.9G 0% /dev/shm
tmpfs 1.9G 8.4M 1.9G 1% /run
tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup
/dev/sda1 497M 205M 292M 42% /boot
tmpfs 380M 0 380M 0% /run/user/0
如果不xfs用resize2fs更新，但是xfs需要用xfs_growfs
[[email protected] /]# resize2fs /dev/centos/root
resize2fs 1.42.9 (28-Dec-2013)
resize2fs: Bad magic number in super-block while trying to open /dev/centos/root
Couldn‘t find valid filesystem superblock.
[[email protected] /]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 6.7G 5.5G 1.3G 82% /
devtmpfs 1.9G 0 1.9G 0% /dev
tmpfs 1.9G 0 1.9G 0% /dev/shm
tmpfs 1.9G 8.4M 1.9G 1% /run
tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup
/dev/sda1 497M 205M 292M 42% /boot
tmpfs 380M 0 380M 0% /run/user/0
[[email protected] /]# xfs_growfs /dev/centos/root
meta-data=/dev/mapper/centos-root isize=256 agcount=4, agsize=436992 blks
= sectsz=512 attr=2, projid32bit=1
= crc=0 finobt=0
data = bsize=4096 blocks=1747968, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=0
log =internal bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 1747968 to 7203840
现在看就ok啦，哈哈
[[email protected] /]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 28G 5.5G 23G 20% /
devtmpfs 1.9G 0 1.9G 0% /dev
tmpfs 1.9G 0 1.9G 0% /dev/shm
tmpfs 1.9G 8.4M 1.9G 1% /run
tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup
/dev/sda1 497M 205M 292M 42% /boot
tmpfs 380M 0 380M 0% /run/user/0
ok了，完美~
时间： 2024-08-05 14:56:40