Linux硬盘扩容
目录
- Linux硬盘扩容
- 一.软件版本
- 二.扩容准备
- 1.分区规则
- 2.分区工具
- 3.分区类型
- 4.硬盘设备名规则
- 5.分区说明
- 三.parted工具扩容
- 1.分区
- 2.LVM
- 3.扩容
- 案例一
- 案例二
- 四.其它
- 1.删除分区
- 五.待解决问题
Linux硬盘扩容
一.软件版本
- 硬盘
硬盘大小：4T
硬盘接口：SCSI
- 其它：
Linux发行版：CentOS-7-x86_64-DVD-1804.iso
二.扩容准备
1.分区规则
- 1至4个主分区 或者 1至3个主分区和1个扩展分区（扩展分区中可再分区为逻辑分区）
2.分区工具
- fdisk：单个分区最大只能创建2T的空间
- parted：单个分区可超过2T的空间
3.分区类型
| 分区类型 | 空间分配 | 扩容命令 |
|---|---|---|
| ext2、ext3、ext4 | 可扩容、可缩容 | resize2fs |
| xfs（centos7默认） | 仅扩容 | xfs_growfs |
4.硬盘设备名规则
- SCSI接口：/dev/sd [a-z] ；设备名后追加的数字，表示此设备的第几个分区，例如：/dev/sda1、/dev/sda2
- IDE接口：/dev/hd [a-z]
5.分区说明
- /dev/mapper/centos-root：根分区（根文件系统）
- /dev/mapper/contos-home：用户分区
- /dev/mapper/centos-swap：交换分区
三.parted工具扩容
1.分区
#--查看硬盘使用情况
# df -Th
#--查看设备列表
# fdisk -l
#--使用parted工具
# parted /dev/sdd
#--打印硬盘和分区信息
# (parted) p
#--其中打印信息中：Disk /dev/sdd: 4001GB 表示可分区空间
#-- GPT分区表
# (parted) mklabel gpt
# Yes/No y
#--这里只做一个分区
# (parted) mkpart
#--分区名可自定义
# Partition name? []? sd2
#--分区类型
# File system type? [ext2]? ext4
#--分区开始大小
# Start? 0
#--分区结束大小（这些复制上面打印的可分区空间）
# End? 4001GB
# Ignore/Cancel? Ignore
#--打印硬盘和分区信息
# (parted) p
#--退出
# quit
- 格式化分区
#--查看设备列表
# fdisk -l
#-- mkfs.[分区类型] [设备分区名]
# mkfs.ext4 /dev/sdd1
2.LVM
#--进入LVM
# lvm
#--创建PV
# lvm> pvcreate /dev/sdd1
[y/n]: y
#--查看现有的VG信息；其中打印信息 Free PE / Size 表示可用空间
# lvm> vgdisplay
#--创建VG；centos是现有的vg name；/dev/sdd1是上面创建的pv
# lvm> vgextend centos /dev/sdd1
#--查看现有的LV
# lvm> lvdisplay
#--LV设置扩容信息（分配的容量可查看vgdisplay的Free PE/Size）（库容的分区可查看lvdisplay）
# lvm> lvextend -L +3720G /dev/centos/home
#--退出
# quit
3.扩容
#--查看硬盘使用情况, /dev/mapper/centos-home xfs
# df -Th
#--使用xfs命令扩容（/dev/mapper/centos-home 或 /dev/centos/home）
# xfs_growfs /dev/centos/home
#--重新查看硬盘使用情况
# df -Th
案例一
Last login: Wed Feb 20 09:19:29 2019 from 192.168.xxx.xxx
ABRT has detected 1 problem(s). For more info run: abrt-cli list --since 1550624655
[root@localhost ~]# fdisk -l
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sda: 479.6 GB, 479554568192 bytes, 936630016 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: gpt
Disk identifier: 265C500F-7FC7-47B2-8ABC-B0DB1F42A62E
# Start End Size Type Name
1 2048 411647 200M EFI System EFI System Partition
2 411648 2508799 1G Microsoft basic
3 2508800 936628223 445.4G Linux LVM
Disk /dev/mapper/centos-root: 53.7 GB, 53687091200 bytes, 104857600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/mapper/centos-swap: 8120 MB, 8120172544 bytes, 15859712 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/sdb: 322 MB, 322961408 bytes, 630784 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: 0x444d454f
Device Boot Start End Blocks Id System
/dev/sdb1 * 1 630783 315391+ 6 FAT16
Disk /dev/mapper/centos-home: 416.5 GB, 416456638464 bytes, 813391872 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sdc: 4000.8 GB, 4000787030016 bytes, 7814037168 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: gpt
Disk identifier: 8C8D5A9C-437F-42D4-A4BD-E09E1B734C08
# Start End Size Type Name
1 34 7814037134 3.7T Microsoft basic sda1
Disk /dev/sdd: 4000.8 GB, 4000787030016 bytes, 7814037168 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: 0x83c173dc
Device Boot Start End Blocks Id System
/dev/sdd1 2048 4294967294 2147482623+ 8e Linux LVM
[root@localhost ~]# fdisk /dev/sdd
WARNING: The size of this disk is 4.0 TB (4000787030016 bytes).
DOS partition table format can not be used on drives for volumes
larger than (2199023255040 bytes) for 512-byte sectors. Use parted(1) and GUID
partition table format (GPT).
Welcome to fdisk (util-linux 2.23.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
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): d
Selected partition 1
Partition 1 is deleted
Command (m for help): p
Disk /dev/sdd: 4000.8 GB, 4000787030016 bytes, 7814037168 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: 0x83c173dc
Device Boot Start End Blocks Id System
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@localhost ~]# fdisk -l
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sda: 479.6 GB, 479554568192 bytes, 936630016 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: gpt
Disk identifier: 265C500F-7FC7-47B2-8ABC-B0DB1F42A62E
# Start End Size Type Name
1 2048 411647 200M EFI System EFI System Partition
2 411648 2508799 1G Microsoft basic
3 2508800 936628223 445.4G Linux LVM
Disk /dev/mapper/centos-root: 53.7 GB, 53687091200 bytes, 104857600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/mapper/centos-swap: 8120 MB, 8120172544 bytes, 15859712 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/sdb: 322 MB, 322961408 bytes, 630784 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: 0x444d454f
Device Boot Start End Blocks Id System
/dev/sdb1 * 1 630783 315391+ 6 FAT16
Disk /dev/mapper/centos-home: 416.5 GB, 416456638464 bytes, 813391872 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sdc: 4000.8 GB, 4000787030016 bytes, 7814037168 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: gpt
Disk identifier: 8C8D5A9C-437F-42D4-A4BD-E09E1B734C08
# Start End Size Type Name
1 34 7814037134 3.7T Microsoft basic sda1
Disk /dev/sdd: 4000.8 GB, 4000787030016 bytes, 7814037168 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: 0x83c173dc
Device Boot Start End Blocks Id System
[root@localhost ~]# lvm
lvm> pvdisplay
--- Physical volume ---
PV Name /dev/sda3
VG Name centos
PV Size 445.42 GiB / not usable 0
Allocatable yes
PE Size 4.00 MiB
Total PE 114028
Free PE 1
Allocated PE 114027
PV UUID BnuZik-R5j2-2iCr-9nQ4-lQH1-c4UA-RI7JqP
lvm> exit
Exiting.
[root@localhost ~]# parted /dev/sdc
GNU Parted 3.1
Using /dev/sdc
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) help
align-check TYPE N check partition N for TYPE(min|opt) alignment
help [COMMAND] print general help, or help on COMMAND
mklabel,mktable LABEL-TYPE create a new disklabel (partition table)
mkpart PART-TYPE [FS-TYPE] START END make a partition
name NUMBER NAME name partition NUMBER as NAME
print [devices|free|list,all|NUMBER] display the partition table, available devices, free space, all found
partitions, or a particular partition
quit exit program
rescue START END rescue a lost partition near START and END
resizepart NUMBER END resize partition NUMBER
rm NUMBER delete partition NUMBER
select DEVICE choose the device to edit
disk_set FLAG STATE change the FLAG on selected device
disk_toggle [FLAG] toggle the state of FLAG on selected device
set NUMBER FLAG STATE change the FLAG on partition NUMBER
toggle [NUMBER [FLAG]] toggle the state of FLAG on partition NUMBER
unit UNIT set the default unit to UNIT
version display the version number and copyright information of GNU Parted
(parted) p
Model: TOSHIBA MG04SCA40ENY (scsi)
Disk /dev/sdc: 4001GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:
Number Start End Size File system Name Flags
1 17.4kB 4001GB 4001GB ext4 sda1
(parted) rm 1
(parted) p
Model: TOSHIBA MG04SCA40ENY (scsi)
Disk /dev/sdc: 4001GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:
Number Start End Size File system Name Flags
(parted) mklabel gpt
Warning: The existing disk label on /dev/sdc will be destroyed and all data on this disk will be lost. Do you want
to continue?
Yes/No? y
(parted) mkpart
Partition name? []? sd1
File system type? [ext2]? ext4
Start? 0
End? 4001GB
Warning: The resulting partition is not properly aligned for best performance.
Ignore/Cancel? Ignore
(parted) p
Model: TOSHIBA MG04SCA40ENY (scsi)
Disk /dev/sdc: 4001GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:
Number Start End Size File system Name Flags
1 17.4kB 4001GB 4001GB ext4 sd1
(parted) gpt
align-check TYPE N check partition N for TYPE(min|opt) alignment
help [COMMAND] print general help, or help on COMMAND
mklabel,mktable LABEL-TYPE create a new disklabel (partition table)
mkpart PART-TYPE [FS-TYPE] START END make a partition
name NUMBER NAME name partition NUMBER as NAME
print [devices|free|list,all|NUMBER] display the partition table, available devices, free space, all found
partitions, or a particular partition
quit exit program
rescue START END rescue a lost partition near START and END
resizepart NUMBER END resize partition NUMBER
rm NUMBER delete partition NUMBER
select DEVICE choose the device to edit
disk_set FLAG STATE change the FLAG on selected device
disk_toggle [FLAG] toggle the state of FLAG on selected device
set NUMBER FLAG STATE change the FLAG on partition NUMBER
toggle [NUMBER [FLAG]] toggle the state of FLAG on partition NUMBER
unit UNIT set the default unit to UNIT
version display the version number and copyright information of GNU Parted
(parted) quit
Information: You may need to update /etc/fstab.
[root@localhost ~]# fdisk -l
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sda: 479.6 GB, 479554568192 bytes, 936630016 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: gpt
Disk identifier: 265C500F-7FC7-47B2-8ABC-B0DB1F42A62E
# Start End Size Type Name
1 2048 411647 200M EFI System EFI System Partition
2 411648 2508799 1G Microsoft basic
3 2508800 936628223 445.4G Linux LVM
Disk /dev/mapper/centos-root: 53.7 GB, 53687091200 bytes, 104857600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/mapper/centos-swap: 8120 MB, 8120172544 bytes, 15859712 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/sdb: 322 MB, 322961408 bytes, 630784 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: 0x444d454f
Device Boot Start End Blocks Id System
/dev/sdb1 * 1 630783 315391+ 6 FAT16
Disk /dev/mapper/centos-home: 416.5 GB, 416456638464 bytes, 813391872 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sdc: 4000.8 GB, 4000787030016 bytes, 7814037168 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: gpt
Disk identifier: E2DCC553-3A14-479F-9496-39D0C99CB2DD
# Start End Size Type Name
1 34 7814037134 3.7T Microsoft basic sd1
Disk /dev/sdd: 4000.8 GB, 4000787030016 bytes, 7814037168 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: 0x83c173dc
Device Boot Start End Blocks Id System
[root@localhost ~]# mkfs.ext4 /dev/sd1
mke2fs 1.42.9 (28-Dec-2013)
Could not stat /dev/sd1 --- No such file or directory
The device apparently does not exist; did you specify it correctly?
[root@localhost ~]# mkfs.ext4 /dev/sdc1
mke2fs 1.42.9 (28-Dec-2013)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
244195328 inodes, 976754637 blocks
48837731 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=3124756480
29809 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
102400000, 214990848, 512000000, 550731776, 644972544
Allocating group tables: done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
[root@localhost ~]# fisdk -l
bash: fisdk: command not found...
[root@localhost ~]# fdisk -l
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sda: 479.6 GB, 479554568192 bytes, 936630016 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: gpt
Disk identifier: 265C500F-7FC7-47B2-8ABC-B0DB1F42A62E
# Start End Size Type Name
1 2048 411647 200M EFI System EFI System Partition
2 411648 2508799 1G Microsoft basic
3 2508800 936628223 445.4G Linux LVM
Disk /dev/mapper/centos-root: 53.7 GB, 53687091200 bytes, 104857600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/mapper/centos-swap: 8120 MB, 8120172544 bytes, 15859712 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/sdb: 322 MB, 322961408 bytes, 630784 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: 0x444d454f
Device Boot Start End Blocks Id System
/dev/sdb1 * 1 630783 315391+ 6 FAT16
Disk /dev/mapper/centos-home: 416.5 GB, 416456638464 bytes, 813391872 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sdc: 4000.8 GB, 4000787030016 bytes, 7814037168 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: gpt
Disk identifier: E2DCC553-3A14-479F-9496-39D0C99CB2DD
# Start End Size Type Name
1 34 7814037134 3.7T Microsoft basic sd1
Disk /dev/sdd: 4000.8 GB, 4000787030016 bytes, 7814037168 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: 0x83c173dc
Device Boot Start End Blocks Id System
[root@localhost ~]# lvm
lvm> pvcreate /dev/sdc1
WARNING: ext4 signature detected on /dev/sdc1 at offset 1080. Wipe it? [y/n]: y
Wiping ext4 signature on /dev/sdc1.
Physical volume "/dev/sdc1" successfully created.
lvm> quit
Exiting.
[root@localhost ~]# ef -h
bash: ef: command not found...
[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 50G 5.8G 45G 12% /
devtmpfs 7.5G 0 7.5G 0% /dev
tmpfs 7.5G 0 7.5G 0% /dev/shm
tmpfs 7.5G 12M 7.5G 1% /run
tmpfs 7.5G 0 7.5G 0% /sys/fs/cgroup
/dev/sda2 1014M 162M 853M 16% /boot
/dev/sda1 200M 9.8M 191M 5% /boot/efi
/dev/mapper/centos-home 388G 37M 388G 1% /home
/dev/sdb1 308M 0 308M 0% /run/media/abc/OEMDRV
tmpfs 1.5G 4.0K 1.5G 1% /run/user/42
tmpfs 1.5G 64K 1.5G 1% /run/user/0
[root@localhost ~]# fdisk -l
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sda: 479.6 GB, 479554568192 bytes, 936630016 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: gpt
Disk identifier: 265C500F-7FC7-47B2-8ABC-B0DB1F42A62E
# Start End Size Type Name
1 2048 411647 200M EFI System EFI System Partition
2 411648 2508799 1G Microsoft basic
3 2508800 936628223 445.4G Linux LVM
Disk /dev/mapper/centos-root: 53.7 GB, 53687091200 bytes, 104857600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/mapper/centos-swap: 8120 MB, 8120172544 bytes, 15859712 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/sdb: 322 MB, 322961408 bytes, 630784 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: 0x444d454f
Device Boot Start End Blocks Id System
/dev/sdb1 * 1 630783 315391+ 6 FAT16
Disk /dev/mapper/centos-home: 416.5 GB, 416456638464 bytes, 813391872 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sdc: 4000.8 GB, 4000787030016 bytes, 7814037168 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: gpt
Disk identifier: E2DCC553-3A14-479F-9496-39D0C99CB2DD
# Start End Size Type Name
1 34 7814037134 3.7T Microsoft basic sd1
Disk /dev/sdd: 4000.8 GB, 4000787030016 bytes, 7814037168 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: 0x83c173dc
Device Boot Start End Blocks Id System
[root@localhost ~]# lvm
lvm> vgdisplay
--- Volume group ---
VG Name centos
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 1
Act PV 1
VG Size 445.42 GiB
PE Size 4.00 MiB
Total PE 114028
Alloc PE / Size 114027 / <445.42 GiB
Free PE / Size 1 / 4.00 MiB
VG UUID UN00Ou-xPuX-tqat-6fYF-QcJD-Dssu-ISE8h5
lvm> vgextend centos /dev/sdc1
Volume group "centos" successfully extended
lvm> vgdisplay
--- Volume group ---
VG Name centos
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 5
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 2
Act PV 2
VG Size 4.07 TiB
PE Size 4.00 MiB
Total PE 1067889
Alloc PE / Size 114027 / <445.42 GiB
Free PE / Size 953862 / <3.64 TiB
VG UUID UN00Ou-xPuX-tqat-6fYF-QcJD-Dssu-ISE8h5
lvm> lvextend -L +100%FREE /dev/mapper/centos-root
Can't parse size argument.
Invalid argument for --size: +100%FREE
Error during parsing of command line.
lvm> lvextend -L +3639G /dev/mapper/centos-root
Size of logical volume centos/root changed from 50.00 GiB (12800 extents) to 3.60 TiB (944384 extents).
Logical volume centos/root successfully resized.
lvm> pvdisplay
--- Physical volume ---
PV Name /dev/sda3
VG Name centos
PV Size 445.42 GiB / not usable 0
Allocatable yes (but full)
PE Size 4.00 MiB
Total PE 114028
Free PE 0
Allocated PE 114028
PV UUID BnuZik-R5j2-2iCr-9nQ4-lQH1-c4UA-RI7JqP
--- Physical volume ---
PV Name /dev/sdc1
VG Name centos
PV Size <3.64 TiB / not usable 3.80 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 953861
Free PE 22278
Allocated PE 931583
PV UUID sgv4wR-EDls-XzS9-Owey-koQP-kXH8-Uo6G7K
lvm> vgdisplay
--- Volume group ---
VG Name centos
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 6
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 2
Act PV 2
VG Size 4.07 TiB
PE Size 4.00 MiB
Total PE 1067889
Alloc PE / Size 1045611 / <3.99 TiB
Free PE / Size 22278 / 87.02 GiB
VG UUID UN00Ou-xPuX-tqat-6fYF-QcJD-Dssu-ISE8h5
lvm> quit
Exiting.
[root@localhost ~]# xfs_growfs /dev/mapper/centos-root
meta-data=/dev/mapper/centos-root isize=512 agcount=4, agsize=3276800 blks
= sectsz=4096 attr=2, projid32bit=1
= crc=1 finobt=0 spinodes=0
data = bsize=4096 blocks=13107200, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal bsize=4096 blocks=6400, version=2
= sectsz=4096 sunit=1 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 13107200 to 967049216
[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 3.7T 5.8G 3.6T 1% /
devtmpfs 7.5G 0 7.5G 0% /dev
tmpfs 7.5G 0 7.5G 0% /dev/shm
tmpfs 7.5G 12M 7.5G 1% /run
tmpfs 7.5G 0 7.5G 0% /sys/fs/cgroup
/dev/sda2 1014M 162M 853M 16% /boot
/dev/sda1 200M 9.8M 191M 5% /boot/efi
/dev/mapper/centos-home 388G 37M 388G 1% /home
/dev/sdb1 308M 0 308M 0% /run/media/abc/OEMDRV
tmpfs 1.5G 4.0K 1.5G 1% /run/user/42
tmpfs 1.5G 64K 1.5G 1% /run/user/0
案例二
[root@localhost ~]# fdisk -l
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sdb: 479.6 GB, 479554568192 bytes, 936630016 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: gpt
Disk identifier: 265C500F-7FC7-47B2-8ABC-B0DB1F42A62E
# Start End Size Type Name
1 2048 411647 200M EFI System EFI System Partition
2 411648 2508799 1G Microsoft basic
3 2508800 936628223 445.4G Linux LVM
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sda: 4000.8 GB, 4000787030016 bytes, 7814037168 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: gpt
Disk identifier: E2DCC553-3A14-479F-9496-39D0C99CB2DD
# Start End Size Type Name
1 34 7814037134 3.7T Microsoft basic sd1
Disk /dev/mapper/centos-root: 3961.0 GB, 3961033588736 bytes, 7736393728 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/mapper/centos-swap: 8120 MB, 8120172544 bytes, 15859712 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/mapper/centos-home: 416.5 GB, 416456638464 bytes, 813391872 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/sdc: 322 MB, 322961408 bytes, 630784 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: 0x444d454f
Device Boot Start End Blocks Id System
/dev/sdc1 * 1 630783 315391+ 6 FAT16
Disk /dev/sdd: 4000.8 GB, 4000787030016 bytes, 7814037168 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: 0x83c173dc
Device Boot Start End Blocks Id System
[root@localhost ~]# parted /dev/sdd
GNU Parted 3.1
Using /dev/sdd
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) p
Model: SEAGATE ST4000NM0025 (scsi)
Disk /dev/sdd: 4001GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
(parted) mklabel gpt
Warning: The existing disk label on /dev/sdd will be destroyed and all data on this disk will be lost. Do you want
to continue?
Yes/No? y
(parted) mkpart
Partition name? []? sd2
File system type? [ext2]? ext4
Start? 0
End? 4001GB
Warning: The resulting partition is not properly aligned for best performance.
Ignore/Cancel? Ignore
(parted) p
Model: SEAGATE ST4000NM0025 (scsi)
Disk /dev/sdd: 4001GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:
Number Start End Size File system Name Flags
1 17.4kB 4001GB 4001GB sd2
(parted) quit
Information: You may need to update /etc/fstab.
[root@localhost ~]# mkfs.ext4 /dev/sd2
mke2fs 1.42.9 (28-Dec-2013)
Could not stat /dev/sd2 --- No such file or directory
The device apparently does not exist; did you specify it correctly?
[root@localhost ~]# fdisk -l
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sdb: 479.6 GB, 479554568192 bytes, 936630016 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: gpt
Disk identifier: 265C500F-7FC7-47B2-8ABC-B0DB1F42A62E
# Start End Size Type Name
1 2048 411647 200M EFI System EFI System Partition
2 411648 2508799 1G Microsoft basic
3 2508800 936628223 445.4G Linux LVM
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sda: 4000.8 GB, 4000787030016 bytes, 7814037168 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: gpt
Disk identifier: E2DCC553-3A14-479F-9496-39D0C99CB2DD
# Start End Size Type Name
1 34 7814037134 3.7T Microsoft basic sd1
Disk /dev/mapper/centos-root: 3961.0 GB, 3961033588736 bytes, 7736393728 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/mapper/centos-swap: 8120 MB, 8120172544 bytes, 15859712 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/mapper/centos-home: 416.5 GB, 416456638464 bytes, 813391872 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/sdc: 322 MB, 322961408 bytes, 630784 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: 0x444d454f
Device Boot Start End Blocks Id System
/dev/sdc1 * 1 630783 315391+ 6 FAT16
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sdd: 4000.8 GB, 4000787030016 bytes, 7814037168 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: gpt
Disk identifier: 87D03097-5A19-48F7-A23B-78314D0F2BB6
# Start End Size Type Name
1 34 7814037134 3.7T Microsoft basic sd2
[root@localhost ~]# mkfs.ext4 /dev/sdd1
mke2fs 1.42.9 (28-Dec-2013)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
244195328 inodes, 976754637 blocks
48837731 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=3124756480
29809 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
102400000, 214990848, 512000000, 550731776, 644972544
Allocating group tables: done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
[root@localhost ~]# lvm
lvm> pvcreate /dev/sdd1^C
[root@localhost ~]# lvm
lvm> pvcreate /dev/sdd1
WARNING: ext4 signature detected on /dev/sdd1 at offset 1080. Wipe it? [y/n]: y
Wiping ext4 signature on /dev/sdd1.
Physical volume "/dev/sdd1" successfully created.
lvm> vgdisplay
--- Volume group ---
VG Name centos
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 6
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 2
Act PV 2
VG Size 4.07 TiB
PE Size 4.00 MiB
Total PE 1067889
Alloc PE / Size 1045611 / <3.99 TiB
Free PE / Size 22278 / 87.02 GiB
VG UUID UN00Ou-xPuX-tqat-6fYF-QcJD-Dssu-ISE8h5
lvm> vgextend centos /dev/sdd1
Volume group "centos" successfully extended
lvm> vgdisplay
--- Volume group ---
VG Name centos
System ID
Format lvm2
Metadata Areas 3
Metadata Sequence No 7
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 3
Act PV 3
VG Size 7.71 TiB
PE Size 4.00 MiB
Total PE 2021750
Alloc PE / Size 1045611 / <3.99 TiB
Free PE / Size 976139 / 3.72 TiB
VG UUID UN00Ou-xPuX-tqat-6fYF-QcJD-Dssu-ISE8h5
lvm> lvdisplay
--- Logical volume ---
LV Path /dev/centos/swap
LV Name swap
VG Name centos
LV UUID e3tU2L-yiAu-0d91-gCUc-pK2b-UA1J-qefwSf
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2019-02-19 20:10:51 +0800
LV Status available
# open 2
LV Size 7.56 GiB
Current LE 1936
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1
--- Logical volume ---
LV Path /dev/centos/home
LV Name home
VG Name centos
LV UUID A2SjOW-ptcT-MPDF-lmJr-Jubo-soFq-OVdaAr
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2019-02-19 20:10:51 +0800
LV Status available
# open 1
LV Size <387.86 GiB
Current LE 99291
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:2
--- Logical volume ---
LV Path /dev/centos/root
LV Name root
VG Name centos
LV UUID D3trQp-dXuk-oWog-VQMO-MmMp-bLUm-6Kpxei
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2019-02-19 20:10:52 +0800
LV Status available
# open 1
LV Size 3.60 TiB
Current LE 944384
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
lvm> vgdispaly
No such command 'vgdispaly'. Try 'help'.
lvm> vgdisplay
--- Volume group ---
VG Name centos
System ID
Format lvm2
Metadata Areas 3
Metadata Sequence No 7
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 3
Act PV 3
VG Size 7.71 TiB
PE Size 4.00 MiB
Total PE 2021750
Alloc PE / Size 1045611 / <3.99 TiB
Free PE / Size 976139 / 3.72 TiB
VG UUID UN00Ou-xPuX-tqat-6fYF-QcJD-Dssu-ISE8h5
lvm> lvextend -L +4000G /dev/centos/home
Insufficient free space: 1024000 extents needed, but only 976139 available
lvm> vgdisplay
--- Volume group ---
VG Name centos
System ID
Format lvm2
Metadata Areas 3
Metadata Sequence No 7
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 3
Act PV 3
VG Size 7.71 TiB
PE Size 4.00 MiB
Total PE 2021750
Alloc PE / Size 1045611 / <3.99 TiB
Free PE / Size 976139 / 3.72 TiB
VG UUID UN00Ou-xPuX-tqat-6fYF-QcJD-Dssu-ISE8h5
lvm> lvextend -L +7720G /dev/centos/home
Insufficient free space: 1976320 extents needed, but only 976139 available
lvm> lvextend -L +3720G /dev/centos/home
Size of logical volume centos/home changed from <387.86 GiB (99291 extents) to 4.01 TiB (1051611 extents).
Logical volume centos/home successfully resized.
lvm> vgdisplay
--- Volume group ---
VG Name centos
System ID
Format lvm2
Metadata Areas 3
Metadata Sequence No 8
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 3
Act PV 3
VG Size 7.71 TiB
PE Size 4.00 MiB
Total PE 2021750
Alloc PE / Size 1997931 / 7.62 TiB
Free PE / Size 23819 / 93.04 GiB
VG UUID UN00Ou-xPuX-tqat-6fYF-QcJD-Dssu-ISE8h5
lvm> quit
Exiting.
[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 3.7T 5.8G 3.6T 1% /
devtmpfs 7.5G 0 7.5G 0% /dev
tmpfs 7.5G 0 7.5G 0% /dev/shm
tmpfs 7.5G 12M 7.5G 1% /run
tmpfs 7.5G 0 7.5G 0% /sys/fs/cgroup
/dev/sdb2 1014M 162M 853M 16% /boot
/dev/sdb1 200M 9.8M 191M 5% /boot/efi
/dev/mapper/centos-home 388G 37M 388G 1% /home
tmpfs 1.5G 4.0K 1.5G 1% /run/user/42
tmpfs 1.5G 32K 1.5G 1% /run/user/0
/dev/sdc1 308M 0 308M 0% /run/media/root/OEMDRV
[root@localhost ~]# df -Th
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/centos-root xfs 3.7T 5.8G 3.6T 1% /
devtmpfs devtmpfs 7.5G 0 7.5G 0% /dev
tmpfs tmpfs 7.5G 0 7.5G 0% /dev/shm
tmpfs tmpfs 7.5G 12M 7.5G 1% /run
tmpfs tmpfs 7.5G 0 7.5G 0% /sys/fs/cgroup
/dev/sdb2 xfs 1014M 162M 853M 16% /boot
/dev/sdb1 vfat 200M 9.8M 191M 5% /boot/efi
/dev/mapper/centos-home xfs 388G 37M 388G 1% /home
tmpfs tmpfs 1.5G 4.0K 1.5G 1% /run/user/42
tmpfs tmpfs 1.5G 32K 1.5G 1% /run/user/0
/dev/sdc1 vfat 308M 0 308M 0% /run/media/root/OEMDRV
[root@localhost ~]# xfs_growfs /dev/centos/home
meta-data=/dev/mapper/centos-home isize=512 agcount=4, agsize=25418496 blks
= sectsz=4096 attr=2, projid32bit=1
= crc=1 finobt=0 spinodes=0
data = bsize=4096 blocks=101673984, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal bsize=4096 blocks=49645, version=2
= sectsz=4096 sunit=1 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 101673984 to 1076849664
[root@localhost ~]# df -Th
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/centos-root xfs 3.7T 5.8G 3.6T 1% /
devtmpfs devtmpfs 7.5G 0 7.5G 0% /dev
tmpfs tmpfs 7.5G 0 7.5G 0% /dev/shm
tmpfs tmpfs 7.5G 12M 7.5G 1% /run
tmpfs tmpfs 7.5G 0 7.5G 0% /sys/fs/cgroup
/dev/sdb2 xfs 1014M 162M 853M 16% /boot
/dev/sdb1 vfat 200M 9.8M 191M 5% /boot/efi
/dev/mapper/centos-home xfs 4.1T 38M 4.1T 1% /home
tmpfs tmpfs 1.5G 4.0K 1.5G 1% /run/user/42
tmpfs tmpfs 1.5G 32K 1.5G 1% /run/user/0
/dev/sdc1 vfat 308M 0 308M 0% /run/media/root/OEMDRV
[root@localhost ~]# fdisk -l
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sdb: 479.6 GB, 479554568192 bytes, 936630016 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: gpt
Disk identifier: 265C500F-7FC7-47B2-8ABC-B0DB1F42A62E
# Start End Size Type Name
1 2048 411647 200M EFI System EFI System Partition
2 411648 2508799 1G Microsoft basic
3 2508800 936628223 445.4G Linux LVM
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sda: 4000.8 GB, 4000787030016 bytes, 7814037168 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: gpt
Disk identifier: E2DCC553-3A14-479F-9496-39D0C99CB2DD
# Start End Size Type Name
1 34 7814037134 3.7T Microsoft basic sd1
Disk /dev/mapper/centos-root: 3961.0 GB, 3961033588736 bytes, 7736393728 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/mapper/centos-swap: 8120 MB, 8120172544 bytes, 15859712 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/mapper/centos-home: 4410.8 GB, 4410776223744 bytes, 8614797312 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.
Disk /dev/sdd: 4000.8 GB, 4000787030016 bytes, 7814037168 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: gpt
Disk identifier: 87D03097-5A19-48F7-A23B-78314D0F2BB6
# Start End Size Type Name
1 34 7814037134 3.7T Microsoft basic sd2
[root@localhost ~]#
连接断开
连接成功
Last login: Wed Feb 20 10:05:24 2019 from 192.168.xxx.xxx
[root@localhost ~]# df -Th
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/centos-root xfs 3.7T 5.8G 3.6T 1% /
devtmpfs devtmpfs 7.5G 0 7.5G 0% /dev
tmpfs tmpfs 7.5G 0 7.5G 0% /dev/shm
tmpfs tmpfs 7.5G 11M 7.5G 1% /run
tmpfs tmpfs 7.5G 0 7.5G 0% /sys/fs/cgroup
/dev/sdc2 xfs 1014M 162M 853M 16% /boot
/dev/sdc1 vfat 200M 9.8M 191M 5% /boot/efi
/dev/mapper/centos-home xfs 4.1T 38M 4.1T 1% /home
tmpfs tmpfs 1.5G 8.0K 1.5G 1% /run/user/42
tmpfs tmpfs 1.5G 0 1.5G 0% /run/user/0
[root@localhost ~]# lvm
lvm> vgdisplay
--- Volume group ---
VG Name centos
System ID
Format lvm2
Metadata Areas 3
Metadata Sequence No 8
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 3
Act PV 3
VG Size 7.71 TiB
PE Size 4.00 MiB
Total PE 2021750
Alloc PE / Size 1997931 / 7.62 TiB
Free PE / Size 23819 / 93.04 GiB
VG UUID UN00Ou-xPuX-tqat-6fYF-QcJD-Dssu-ISE8h5
lvm> lvextend -L +93G /dev/centos/root
Size of logical volume centos/root changed from 3.60 TiB (944384 extents) to 3.69 TiB (968192 extents).
Logical volume centos/root successfully resized.
lvm> vgdisplay
--- Volume group ---
VG Name centos
System ID
Format lvm2
Metadata Areas 3
Metadata Sequence No 9
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 3
Act PV 3
VG Size 7.71 TiB
PE Size 4.00 MiB
Total PE 2021750
Alloc PE / Size 2021739 / 7.71 TiB
Free PE / Size 11 / 44.00 MiB
VG UUID UN00Ou-xPuX-tqat-6fYF-QcJD-Dssu-ISE8h5
lvm> quit
Exiting.
[root@localhost ~]# xfs_growfs /dev/centos/root
meta-data=/dev/mapper/centos-root isize=512 agcount=296, agsize=3276800 blks
= sectsz=4096 attr=2, projid32bit=1
= crc=1 finobt=0 spinodes=0
data = bsize=4096 blocks=967049216, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal bsize=4096 blocks=6400, version=2
= sectsz=4096 sunit=1 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 967049216 to 991428608
[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root 3.7T 5.8G 3.7T 1% /
devtmpfs 7.5G 0 7.5G 0% /dev
tmpfs 7.5G 0 7.5G 0% /dev/shm
tmpfs 7.5G 11M 7.5G 1% /run
tmpfs 7.5G 0 7.5G 0% /sys/fs/cgroup
/dev/sdc2 1014M 162M 853M 16% /boot
/dev/sdc1 200M 9.8M 191M 5% /boot/efi
/dev/mapper/centos-home 4.1T 38M 4.1T 1% /home
tmpfs 1.5G 12K 1.5G 1% /run/user/42
tmpfs 1.5G 0 1.5G 0% /run/user/0
四.其它
1.删除分区
- fdisk 删除分区
# fdisk /dev/sdd
# --根据输入 m 的提示，输入 d 可删除分区，如果只有1个分区，自动删除，如果多个分区，需要输入分区数字
Command (m for help): d
#--退出
# quit
- parted 删除分区
# parted /dev/sdd
#--输入 p 显示硬盘信息
# (parted) p
#--删除 1 分区
# (parted) rm 1
#--退出
# quit
五.待解决问题
- fdisk分区大于2T的操作
- ext4的缩容操作
- 删除扩容