centos7 新增lvm磁碟
df -h
fdisk -l
fdisk /dev/sdb
n
p
根據情況整理大小設定起始和終止(這裡我敲兩個回車，使用所有的空間)
t
L
8e
wq
fdisk -l
pvcreate /dev/sdb1
vgcreate centosvg /dev/sdb1
vgchange -ay centosvg
vgdisplay centosvg | grep "Total PE"
lvcreate -l 2047 centosvg -n lvvar
mkfs.ext4 /dev/centosvg/lvvar
mkdir /new_var
echo '/dev/centosvg/lvvar /new_var ext4 defaults 0 0'>>/etc/fstab
mount -a
df -hal
cd /var
tar cpf - .|(cd /new_var/; tar xvpf -)
cd /
mv /var /old_var
mkdir /var
umount /new_var/
mount /dev/centosvg/lvvar /var
[root@localhost /]# df -l
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 14G 3.9G 9.4G 30% /
devtmpfs 741M 0 741M 0% /dev
tmpfs 749M 80K 749M 1% /dev/shm
tmpfs 749M 8.7M 740M 2% /run
tmpfs 749M 0 749M 0% /sys/fs/cgroup
[root@localhost ~]# fdisk -l
Disk /dev/sdb: 8589 MB, 8589934592 bytes, 16777216 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 /dev/sda: 15.4 GB, 15350530048 bytes, 29981504 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: 0x0001ffba
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 29980671 14989312 83 Linux
[root@localhost ~]# fdisk /dev/sdb
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.
Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0x02242155.
Command (m for help): n
Partition type:
p primary (0 primary, 0 extended, 4 free)
e extended
Select (default p): p
Partition number (1-4, default 1): 1
First sector (2048-16777215, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-16777215, default 16777215):
Using default value 16777215
Partition 1 of type Linux and of size 8 GiB is set
Command (m for help): t
Selected partition 1
Hex code (type L to list all codes): L
0 Empty 24 NEC DOS 81 Minix / old Lin bf Solaris
1 FAT12 27 Hidden NTFS Win 82 Linux swap / So c1 DRDOS/sec (FAT-
2 XENIX root 39 Plan 9 83 Linux c4 DRDOS/sec (FAT-
3 XENIX usr 3c PartitionMagic 84 OS/2 hidden C: c6 DRDOS/sec (FAT-
4 FAT16 <32M 40 Venix 80286 85 Linux extended c7 Syrinx
5 Extended 41 PPC PReP Boot 86 NTFS volume set da Non-FS data
6 FAT16 42 SFS 87 NTFS volume set db CP/M / CTOS / .
7 HPFS/NTFS/exFAT 4d QNX4.x 88 Linux plaintext de Dell Utility
8 AIX 4e QNX4.x 2nd part 8e Linux LVM df BootIt
9 AIX bootable 4f QNX4.x 3rd part 93 Amoeba e1 DOS access
a OS/2 Boot Manag 50 OnTrack DM 94 Amoeba BBT e3 DOS R/O
b W95 FAT32 51 OnTrack DM6 Aux 9f BSD/OS e4 SpeedStor
c W95 FAT32 (LBA) 52 CP/M a0 IBM Thinkpad hi eb BeOS fs
e W95 FAT16 (LBA) 53 OnTrack DM6 Aux a5 FreeBSD ee GPT
f W95 Ext'd (LBA) 54 OnTrackDM6 a6 OpenBSD ef EFI (FAT-12/16/
10 OPUS 55 EZ-Drive a7 NeXTSTEP f0 Linux/PA-RISC b
11 Hidden FAT12 56 Golden Bow a8 Darwin UFS f1 SpeedStor
12 Compaq diagnost 5c Priam Edisk a9 NetBSD f4 SpeedStor
14 Hidden FAT16 <3 61 SpeedStor ab Darwin boot f2 DOS secondary
16 Hidden FAT16 63 GNU HURD or Sys af HFS / HFS+ fb VMware VMFS
17 Hidden HPFS/NTF 64 Novell Netware b7 BSDI fs fc VMware VMKCORE
18 AST SmartSleep 65 Novell Netware b8 BSDI swap fd Linux raid auto
1b Hidden W95 FAT3 70 DiskSecure Mult bb Boot Wizard hid fe LANstep
1c Hidden W95 FAT3 75 PC/IX be Solaris boot ff BBT
1e Hidden W95 FAT1 80 Old Minix
Hex code (type L to list all codes): 8e
Changed type of partition 'Linux' to 'Linux LVM'
Command (m for help): wq
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@localhost ~]# fdisk -l
Disk /dev/sdb: 8589 MB, 8589934592 bytes, 16777216 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: 0x02242155
Device Boot Start End Blocks Id System
/dev/sdb1 2048 16777215 8387584 8e Linux LVM
Disk /dev/sda: 15.4 GB, 15350530048 bytes, 29981504 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: 0x0001ffba
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 29980671 14989312 83 Linux
[root@localhost ~]# pvcreate /dev/sdb1
Physical volume "/dev/sdb1" successfully created
[root@localhost ~]# vgcreate centosvg /dev/sdb1
Volume group "centosvg" successfully created
[root@localhost ~]# vgchange -ay centosvg
0 logical volume(s) in volume group "centosvg" now active
[root@localhost ~]# vgdisplay centosvg | grep "Total PE"
Total PE 2047
[root@localhost ~]# lvcreate -l 2047 centosvg -n lvvar
Logical volume "lvvar" created.
[root@localhost ~]# mkfs.ext4 /dev/centosvg/lvvar
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
524288 inodes, 2096128 blocks
104806 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=2147483648
64 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
Allocating group tables: done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
[root@localhost ~]# mkdir /new_var
[root@localhost ~]# echo '/dev/centosvg/lvvar /new_var ext4 defaults 0 0'>>/etc/fstab
[root@localhost ~]# cat /etc/fstab
#
# /etc/fstab
# Created by anaconda on Mon Jul 27 09:00:45 2015
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
UUID=acc32c5f-5cef-43d4-bb4e-1e7e03a08b2e / ext4 defaults 1 1
/dev/centosvg/lvvar /new_var ext4 defaults 0 0
[root@localhost ~]# mount -a
[root@localhost ~]# df -hal
Filesystem Size Used Avail Use% Mounted on
rootfs 14G 3.9G 9.4G 30% /
proc 0 0 0 - /proc
sysfs 0 0 0 - /sys
devtmpfs 741M 0 741M 0% /dev
securityfs 0 0 0 - /sys/kernel/security
tmpfs 749M 80K 749M 1% /dev/shm
devpts 0 0 0 - /dev/pts
tmpfs 749M 8.7M 740M 2% /run
tmpfs 749M 0 749M 0% /sys/fs/cgroup
cgroup 0 0 0 - /sys/fs/cgroup/systemd
pstore 0 0 0 - /sys/fs/pstore
cgroup 0 0 0 - /sys/fs/cgroup/cpuset
cgroup 0 0 0 - /sys/fs/cgroup/cpu,cpuacct
cgroup 0 0 0 - /sys/fs/cgroup/memory
cgroup 0 0 0 - /sys/fs/cgroup/devices
cgroup 0 0 0 - /sys/fs/cgroup/freezer
cgroup 0 0 0 - /sys/fs/cgroup/net_cls
cgroup 0 0 0 - /sys/fs/cgroup/blkio
cgroup 0 0 0 - /sys/fs/cgroup/perf_event
cgroup 0 0 0 - /sys/fs/cgroup/hugetlb
configfs 0 0 0 - /sys/kernel/config
/dev/sda1 14G 3.9G 9.4G 30% /
selinuxfs 0 0 0 - /sys/fs/selinux
systemd-1 0 0 0 - /proc/sys/fs/binfmt_misc
hugetlbfs 0 0 0 - /dev/hugepages
mqueue 0 0 0 - /dev/mqueue
debugfs 0 0 0 - /sys/kernel/debug
/dev/mapper/centosvg-lvvar 7.8G 36M 7.3G 1% /new_var
[root@localhost var]# tar cpf - .|(cd /new_var/; tar xvpf -)
[root@localhost var]# cd /
[root@localhost var]# mv /var /old_var
[root@localhost var]# mkdir /var
[root@localhost var]# umount /new_var/
[root@localhost var]# mount /dev/centosvg/lvvar /var
[root@localhost var]# vim /etc/fstab
修改
/dev/centosvg/lvvar /new_var ext4 defaults 0 0
為
/dev/centosvg/lvvar /var ext4 defaults 0 0
新增新硬碟處理過程
fdisk -l
fdisk /dev/sdc
n
p
1
t
8e
pvcreate /dev/sdc1
vgextend centosvg /dev/sdc1
lvresize -l +4095 /dev/centosvg/lvvar
resize2fs /dev/centosvg/lvvar
[root@localhost ~]# fdisk -l
Disk /dev/sdb: 8589 MB, 8589934592 bytes, 16777216 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: 0x02242155
Device Boot Start End Blocks Id System
/dev/sdb1 2048 16777215 8387584 8e Linux LVM
Disk /dev/sda: 15.4 GB, 15350530048 bytes, 29981504 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: 0x0001ffba
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 29980671 14989312 83 Linux
Disk /dev/sdc: 17.2 GB, 17179869184 bytes, 33554432 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 /dev/mapper/centosvg-lvvar: 8585 MB, 8585740288 bytes, 16769024 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
[root@localhost ~]# fdisk /dev/sdc
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.
Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0x03dfe0b3.
Command (m for help): n
Partition type:
p primary (0 primary, 0 extended, 4 free)
e extended
Select (default p): p
Partition number (1-4, default 1):
First sector (2048-33554431, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-33554431, default 33554431):
Using default value 33554431
Partition 1 of type Linux and of size 16 GiB is set
Command (m for help): t
Selected partition 1
Hex code (type L to list all codes): 8e
Changed type of partition 'Linux' to 'Linux LVM'
Command (m for help): wq
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@localhost ~]# fdisk -l
Disk /dev/sdb: 8589 MB, 8589934592 bytes, 16777216 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: 0x02242155
Device Boot Start End Blocks Id System
/dev/sdb1 2048 16777215 8387584 8e Linux LVM
Disk /dev/sda: 15.4 GB, 15350530048 bytes, 29981504 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: 0x0001ffba
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 29980671 14989312 83 Linux
Disk /dev/sdc: 17.2 GB, 17179869184 bytes, 33554432 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: 0x03dfe0b3
Device Boot Start End Blocks Id System
/dev/sdc1 2048 33554431 16776192 8e Linux LVM
Disk /dev/mapper/centosvg-lvvar: 8585 MB, 8585740288 bytes, 16769024 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
[root@localhost ~]# pvcreate /dev/sdc1
Physical volume "/dev/sdc1" successfully created
[root@localhost ~]# vgextend centosvg /dev/sdc1
Volume group "centosvg" successfully extended
[root@localhost ~]# lvresize -l +4095 /dev/centosvg/lvvar
Size of logical volume centosvg/lvvar changed from 8.00 GiB (2047 extents) to 23.99 GiB (6142 extents).
Logical volume lvvar successfully resized
[root@localhost ~]# lvdisplay
--- Logical volume ---
LV Path /dev/centosvg/lvvar
LV Name lvvar
VG Name centosvg
LV UUID P5MD5F-ihCE-4bZx-Xktb-okid-HP6N-1jNfY4
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2015-07-28 11:34:09 +0800
LV Status available
# open 1
LV Size 23.99 GiB
Current LE 6142
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:0
[root@localhost ~]# resize2fs /dev/centosvg/lvvar
resize2fs 1.42.9 (28-Dec-2013)
Filesystem at /dev/centosvg/lvvar is mounted on /var; on-line resizing required
old_desc_blocks = 1, new_desc_blocks = 3
The filesystem on /dev/centosvg/lvvar is now 6289408 blocks long.
[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 14G 3.6G 9.7G 28% /
devtmpfs 741M 0 741M 0% /dev
tmpfs 749M 80K 749M 1% /dev/shm
tmpfs 749M 8.7M 740M 2% /run
tmpfs 749M 0 749M 0% /sys/fs/cgroup
/dev/mapper/centosvg-lvvar 24G 322M 23G 2% /var
fdisk -l
fdisk /dev/sdb
n
p
根據情況整理大小設定起始和終止(這裡我敲兩個回車，使用所有的空間)
t
L
8e
wq
fdisk -l
pvcreate /dev/sdb1
vgcreate centosvg /dev/sdb1
vgchange -ay centosvg
vgdisplay centosvg | grep "Total PE"
lvcreate -l 2047 centosvg -n lvvar
mkfs.ext4 /dev/centosvg/lvvar
mkdir /new_var
echo '/dev/centosvg/lvvar /new_var ext4 defaults 0 0'>>/etc/fstab
mount -a
df -hal
cd /var
tar cpf - .|(cd /new_var/; tar xvpf -)
cd /
mv /var /old_var
mkdir /var
umount /new_var/
mount /dev/centosvg/lvvar /var
[root@localhost /]# df -l
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 14G 3.9G 9.4G 30% /
devtmpfs 741M 0 741M 0% /dev
tmpfs 749M 80K 749M 1% /dev/shm
tmpfs 749M 8.7M 740M 2% /run
tmpfs 749M 0 749M 0% /sys/fs/cgroup
[root@localhost ~]# fdisk -l
Disk /dev/sdb: 8589 MB, 8589934592 bytes, 16777216 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 /dev/sda: 15.4 GB, 15350530048 bytes, 29981504 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: 0x0001ffba
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 29980671 14989312 83 Linux
[root@localhost ~]# fdisk /dev/sdb
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.
Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0x02242155.
Command (m for help): n
Partition type:
p primary (0 primary, 0 extended, 4 free)
e extended
Select (default p): p
Partition number (1-4, default 1): 1
First sector (2048-16777215, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-16777215, default 16777215):
Using default value 16777215
Partition 1 of type Linux and of size 8 GiB is set
Command (m for help): t
Selected partition 1
Hex code (type L to list all codes): L
0 Empty 24 NEC DOS 81 Minix / old Lin bf Solaris
1 FAT12 27 Hidden NTFS Win 82 Linux swap / So c1 DRDOS/sec (FAT-
2 XENIX root 39 Plan 9 83 Linux c4 DRDOS/sec (FAT-
3 XENIX usr 3c PartitionMagic 84 OS/2 hidden C: c6 DRDOS/sec (FAT-
4 FAT16 <32M 40 Venix 80286 85 Linux extended c7 Syrinx
5 Extended 41 PPC PReP Boot 86 NTFS volume set da Non-FS data
6 FAT16 42 SFS 87 NTFS volume set db CP/M / CTOS / .
7 HPFS/NTFS/exFAT 4d QNX4.x 88 Linux plaintext de Dell Utility
8 AIX 4e QNX4.x 2nd part 8e Linux LVM df BootIt
9 AIX bootable 4f QNX4.x 3rd part 93 Amoeba e1 DOS access
a OS/2 Boot Manag 50 OnTrack DM 94 Amoeba BBT e3 DOS R/O
b W95 FAT32 51 OnTrack DM6 Aux 9f BSD/OS e4 SpeedStor
c W95 FAT32 (LBA) 52 CP/M a0 IBM Thinkpad hi eb BeOS fs
e W95 FAT16 (LBA) 53 OnTrack DM6 Aux a5 FreeBSD ee GPT
f W95 Ext'd (LBA) 54 OnTrackDM6 a6 OpenBSD ef EFI (FAT-12/16/
10 OPUS 55 EZ-Drive a7 NeXTSTEP f0 Linux/PA-RISC b
11 Hidden FAT12 56 Golden Bow a8 Darwin UFS f1 SpeedStor
12 Compaq diagnost 5c Priam Edisk a9 NetBSD f4 SpeedStor
14 Hidden FAT16 <3 61 SpeedStor ab Darwin boot f2 DOS secondary
16 Hidden FAT16 63 GNU HURD or Sys af HFS / HFS+ fb VMware VMFS
17 Hidden HPFS/NTF 64 Novell Netware b7 BSDI fs fc VMware VMKCORE
18 AST SmartSleep 65 Novell Netware b8 BSDI swap fd Linux raid auto
1b Hidden W95 FAT3 70 DiskSecure Mult bb Boot Wizard hid fe LANstep
1c Hidden W95 FAT3 75 PC/IX be Solaris boot ff BBT
1e Hidden W95 FAT1 80 Old Minix
Hex code (type L to list all codes): 8e
Changed type of partition 'Linux' to 'Linux LVM'
Command (m for help): wq
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@localhost ~]# fdisk -l
Disk /dev/sdb: 8589 MB, 8589934592 bytes, 16777216 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: 0x02242155
Device Boot Start End Blocks Id System
/dev/sdb1 2048 16777215 8387584 8e Linux LVM
Disk /dev/sda: 15.4 GB, 15350530048 bytes, 29981504 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: 0x0001ffba
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 29980671 14989312 83 Linux
[root@localhost ~]# pvcreate /dev/sdb1
Physical volume "/dev/sdb1" successfully created
[root@localhost ~]# vgcreate centosvg /dev/sdb1
Volume group "centosvg" successfully created
[root@localhost ~]# vgchange -ay centosvg
0 logical volume(s) in volume group "centosvg" now active
[root@localhost ~]# vgdisplay centosvg | grep "Total PE"
Total PE 2047
[root@localhost ~]# lvcreate -l 2047 centosvg -n lvvar
Logical volume "lvvar" created.
[root@localhost ~]# mkfs.ext4 /dev/centosvg/lvvar
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
524288 inodes, 2096128 blocks
104806 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=2147483648
64 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
Allocating group tables: done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
[root@localhost ~]# mkdir /new_var
[root@localhost ~]# echo '/dev/centosvg/lvvar /new_var ext4 defaults 0 0'>>/etc/fstab
[root@localhost ~]# cat /etc/fstab
#
# /etc/fstab
# Created by anaconda on Mon Jul 27 09:00:45 2015
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
UUID=acc32c5f-5cef-43d4-bb4e-1e7e03a08b2e / ext4 defaults 1 1
/dev/centosvg/lvvar /new_var ext4 defaults 0 0
[root@localhost ~]# mount -a
[root@localhost ~]# df -hal
Filesystem Size Used Avail Use% Mounted on
rootfs 14G 3.9G 9.4G 30% /
proc 0 0 0 - /proc
sysfs 0 0 0 - /sys
devtmpfs 741M 0 741M 0% /dev
securityfs 0 0 0 - /sys/kernel/security
tmpfs 749M 80K 749M 1% /dev/shm
devpts 0 0 0 - /dev/pts
tmpfs 749M 8.7M 740M 2% /run
tmpfs 749M 0 749M 0% /sys/fs/cgroup
cgroup 0 0 0 - /sys/fs/cgroup/systemd
pstore 0 0 0 - /sys/fs/pstore
cgroup 0 0 0 - /sys/fs/cgroup/cpuset
cgroup 0 0 0 - /sys/fs/cgroup/cpu,cpuacct
cgroup 0 0 0 - /sys/fs/cgroup/memory
cgroup 0 0 0 - /sys/fs/cgroup/devices
cgroup 0 0 0 - /sys/fs/cgroup/freezer
cgroup 0 0 0 - /sys/fs/cgroup/net_cls
cgroup 0 0 0 - /sys/fs/cgroup/blkio
cgroup 0 0 0 - /sys/fs/cgroup/perf_event
cgroup 0 0 0 - /sys/fs/cgroup/hugetlb
configfs 0 0 0 - /sys/kernel/config
/dev/sda1 14G 3.9G 9.4G 30% /
selinuxfs 0 0 0 - /sys/fs/selinux
systemd-1 0 0 0 - /proc/sys/fs/binfmt_misc
hugetlbfs 0 0 0 - /dev/hugepages
mqueue 0 0 0 - /dev/mqueue
debugfs 0 0 0 - /sys/kernel/debug
/dev/mapper/centosvg-lvvar 7.8G 36M 7.3G 1% /new_var
[root@localhost var]# tar cpf - .|(cd /new_var/; tar xvpf -)
[root@localhost var]# cd /
[root@localhost var]# mv /var /old_var
[root@localhost var]# mkdir /var
[root@localhost var]# umount /new_var/
[root@localhost var]# mount /dev/centosvg/lvvar /var
[root@localhost var]# vim /etc/fstab
修改
/dev/centosvg/lvvar /new_var ext4 defaults 0 0
為
/dev/centosvg/lvvar /var ext4 defaults 0 0
新增新硬碟處理過程
fdisk -l
fdisk /dev/sdc
n
p
1
t
8e
pvcreate /dev/sdc1
vgextend centosvg /dev/sdc1
lvresize -l +4095 /dev/centosvg/lvvar
resize2fs /dev/centosvg/lvvar
[root@localhost ~]# fdisk -l
Disk /dev/sdb: 8589 MB, 8589934592 bytes, 16777216 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: 0x02242155
Device Boot Start End Blocks Id System
/dev/sdb1 2048 16777215 8387584 8e Linux LVM
Disk /dev/sda: 15.4 GB, 15350530048 bytes, 29981504 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: 0x0001ffba
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 29980671 14989312 83 Linux
Disk /dev/sdc: 17.2 GB, 17179869184 bytes, 33554432 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 /dev/mapper/centosvg-lvvar: 8585 MB, 8585740288 bytes, 16769024 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
[root@localhost ~]# fdisk /dev/sdc
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.
Device does not contain a recognized partition table
Building a new DOS disklabel with disk identifier 0x03dfe0b3.
Command (m for help): n
Partition type:
p primary (0 primary, 0 extended, 4 free)
e extended
Select (default p): p
Partition number (1-4, default 1):
First sector (2048-33554431, default 2048):
Using default value 2048
Last sector, +sectors or +size{K,M,G} (2048-33554431, default 33554431):
Using default value 33554431
Partition 1 of type Linux and of size 16 GiB is set
Command (m for help): t
Selected partition 1
Hex code (type L to list all codes): 8e
Changed type of partition 'Linux' to 'Linux LVM'
Command (m for help): wq
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@localhost ~]# fdisk -l
Disk /dev/sdb: 8589 MB, 8589934592 bytes, 16777216 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: 0x02242155
Device Boot Start End Blocks Id System
/dev/sdb1 2048 16777215 8387584 8e Linux LVM
Disk /dev/sda: 15.4 GB, 15350530048 bytes, 29981504 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: 0x0001ffba
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 29980671 14989312 83 Linux
Disk /dev/sdc: 17.2 GB, 17179869184 bytes, 33554432 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: 0x03dfe0b3
Device Boot Start End Blocks Id System
/dev/sdc1 2048 33554431 16776192 8e Linux LVM
Disk /dev/mapper/centosvg-lvvar: 8585 MB, 8585740288 bytes, 16769024 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
[root@localhost ~]# pvcreate /dev/sdc1
Physical volume "/dev/sdc1" successfully created
[root@localhost ~]# vgextend centosvg /dev/sdc1
Volume group "centosvg" successfully extended
[root@localhost ~]# lvresize -l +4095 /dev/centosvg/lvvar
Size of logical volume centosvg/lvvar changed from 8.00 GiB (2047 extents) to 23.99 GiB (6142 extents).
Logical volume lvvar successfully resized
[root@localhost ~]# lvdisplay
--- Logical volume ---
LV Path /dev/centosvg/lvvar
LV Name lvvar
VG Name centosvg
LV UUID P5MD5F-ihCE-4bZx-Xktb-okid-HP6N-1jNfY4
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2015-07-28 11:34:09 +0800
LV Status available
# open 1
LV Size 23.99 GiB
Current LE 6142
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:0
[root@localhost ~]# resize2fs /dev/centosvg/lvvar
resize2fs 1.42.9 (28-Dec-2013)
Filesystem at /dev/centosvg/lvvar is mounted on /var; on-line resizing required
old_desc_blocks = 1, new_desc_blocks = 3
The filesystem on /dev/centosvg/lvvar is now 6289408 blocks long.
[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 14G 3.6G 9.7G 28% /
devtmpfs 741M 0 741M 0% /dev
tmpfs 749M 80K 749M 1% /dev/shm
tmpfs 749M 8.7M 740M 2% /run
tmpfs 749M 0 749M 0% /sys/fs/cgroup
/dev/mapper/centosvg-lvvar 24G 322M 23G 2% /var
來自 “ ITPUB部落格 ” ，連結：http://blog.itpub.net/28282660/viewspace-1754121/，如需轉載，請註明出處，否則將追究法律責任。
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