lvm示例应用
案例描述: 增加四块scsi硬盘,每块100G,并构建lvm逻辑卷,挂载到相应目录下
传统的分区方式
常用命令
临时添加IP地址:
ip add add 192.168.10.222/24 dev ens33
查看有哪些磁盘
[root@sc-lvm ~]
Disk /dev/sda:20 GiB,21474836480 字节,41943040 个扇区
单元:扇区 / 1 * 512 = 512 字节
扇区大小(逻辑/物理):512 字节 / 512 字节
I/O 大小(最小/最佳):512 字节 / 512 字节
磁盘标签类型:dos
磁盘标识符:0x0528d13d
设备 启动 起点 末尾 扇区 大小 Id 类型
/dev/sda1 * 2048 2099199 2097152 1G 83 Linux
/dev/sda2 2099200 41943039 39843840 19G 8e Linux LVM
Disk /dev/sdb:100 GiB,107374182400 字节,209715200 个扇区
单元:扇区 / 1 * 512 = 512 字节
扇区大小(逻辑/物理):512 字节 / 512 字节
I/O 大小(最小/最佳):512 字节 / 512 字节
Disk /dev/sdc:100 GiB,107374182400 字节,209715200 个扇区
单元:扇区 / 1 * 512 = 512 字节
扇区大小(逻辑/物理):512 字节 / 512 字节
I/O 大小(最小/最佳):512 字节 / 512 字节
Disk /dev/sdd:100 GiB,107374182400 字节,209715200 个扇区
单元:扇区 / 1 * 512 = 512 字节
扇区大小(逻辑/物理):512 字节 / 512 字节
I/O 大小(最小/最佳):512 字节 / 512 字节
Disk /dev/sde:100 GiB,107374182400 字节,209715200 个扇区
单元:扇区 / 1 * 512 = 512 字节
扇区大小(逻辑/物理):512 字节 / 512 字节
I/O 大小(最小/最佳):512 字节 / 512 字节
Disk /dev/mapper/cl-root:17 GiB,18249416704 字节,35643392 个扇区
单元:扇区 / 1 * 512 = 512 字节
扇区大小(逻辑/物理):512 字节 / 512 字节
I/O 大小(最小/最佳):512 字节 / 512 字节
Disk /dev/mapper/cl-swap:2 GiB,2147483648 字节,4194304 个扇区
单元:扇区 / 1 * 512 = 512 字节
扇区大小(逻辑/物理):512 字节 / 512 字节
I/O 大小(最小/最佳):512 字节 / 512 字节
[root@sc-lvm ~]
1.把磁盘转换为物理卷(pv)
[root@sc-lvm ~]
Physical volume "/dev/sdb" successfully created.
[root@sc-lvm ~]
PV /dev/sda2 VG cl lvm2 [<19.00 GiB / 0 free]
PV /dev/sdb lvm2 [100.00 GiB]
Total: 2 [<119.00 GiB] / in use: 1 [<19.00 GiB] / in no VG: 1 [100.00 GiB]
[root@sc-lvm ~]
[root@sc-lvm ~]
Physical volume "/dev/sdc" successfully created.
[root@sc-lvm ~]
PV /dev/sda2 VG cl lvm2 [<19.00 GiB / 0 free]
PV /dev/sdb lvm2 [100.00 GiB]
PV /dev/sdc lvm2 [100.00 GiB]
Total: 3 [<219.00 GiB] / in use: 1 [<19.00 GiB] / in no VG: 2 [200.00 GiB]
[root@sc-lvm ~]
PV /dev/sda2 VG cl lvm2 [<19.00 GiB / 0 free]
PV /dev/sdb lvm2 [100.00 GiB]
PV /dev/sdc lvm2 [100.00 GiB]
Total: 3 [<219.00 GiB] / in use: 1 [<19.00 GiB] / in no VG: 2 [200.00 GiB]
2.建卷组 pv->vg
[root@sc-lvm ~]
Volume group "mail_store" successfully created
[root@sc-lvm ~]
Found volume group "mail_store" using metadata type lvm2
Found volume group "cl" using metadata type lvm2
3.划分逻辑卷 VG->LV
[root@sc-lvm ~]
Logical volume "sc_mail" created.
[root@sc-lvm ~]
ACTIVE '/dev/mail_store/sc_mail' [150.00 GiB] inherit
ACTIVE '/dev/cl/swap' [2.00 GiB] inherit
ACTIVE '/dev/cl/root' [<17.00 GiB] inherit
4.格式化为xfs文件系统
[root@sc-lvm ~]
meta-data=/dev/mail_store/sc_mail isize=512 agcount=4, agsize=9830400 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=1, sparse=1, rmapbt=0
= reflink=1
data = bsize=4096 blocks=39321600, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0, ftype=1
log =internal log bsize=4096 blocks=19200, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
5.挂载使用文件系统
[root@sc-lvm ~]
[root@sc-lvm ~]
[root@sc-lvm ~]
文件系统 类型 容量 已用 可用 已用% 挂载点
devtmpfs devtmpfs 886M 0 886M 0% /dev
tmpfs tmpfs 904M 0 904M 0% /dev/shm
tmpfs tmpfs 904M 8.8M 895M 1% /run
tmpfs tmpfs 904M 0 904M 0% /sys/fs/cgroup
/dev/mapper/cl-root xfs 17G 1.8G 16G 11% /
/dev/sda1 ext4 976M 136M 774M 15% /boot
tmpfs tmpfs 181M 0 181M 0% /run/user/0
/dev/mapper/mail_store-sc_mail xfs 150G 1.1G 149G 1% /mail
6.修改/etc/fstab文件实现开机自动挂载
[root@sc-lvm ~]
/dev/mail_store/sc_mail /mail xfs default 0 0
7.模拟扩容,查看卷组
[root@sc-lvm ~]
--- Volume group ---
VG Name mail_store
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 2
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 2
Act PV 2
VG Size 199.99 GiB
PE Size 4.00 MiB
Total PE 51198
Alloc PE / Size 38400 / 150.00 GiB
Free PE / Size 12798 / 49.99 GiB
VG UUID gv39FC-rOut-E5oN-QQq0-2RdL-5pFk-8AXwKf
--- Volume group ---
VG Name cl
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 <19.00 GiB
PE Size 4.00 MiB
Total PE 4863
Alloc PE / Size 4863 / <19.00 GiB
Free PE / Size 0 / 0
VG UUID znmYyI-vc7d-lBjR-lHvn-gX4E-dNut-0ILU7M
[root@sc-lvm ~]
Size of logical volume mail_store/sc_mail changed from 150.00 GiB (38400 extents) to 190.00 GiB (48640 extents).
Logical volume mail_store/sc_mail successfully resized.
[root@sc-lvm ~]
文件系统 类型 容量 已用 可用 已用% 挂载点
devtmpfs devtmpfs 929M 0 929M 0% /dev
tmpfs tmpfs 947M 0 947M 0% /dev/shm
tmpfs tmpfs 947M 9.2M 938M 1% /run
tmpfs tmpfs 947M 0 947M 0% /sys/fs/cgroup
/dev/mapper/cl-root xfs 19G 1.9G 17G 11% /
/dev/sda1 ext4 1.1G 142M 811M 15% /boot
tmpfs tmpfs 190M 0 190M 0% /run/user/0
/dev/mapper/mail_store-sc_mail xfs 161G 1.2G 160G 1% /mail
[root@sc-lvm ~]
--- Logical volume ---
LV Path /dev/mail_store/sc_mail
LV Name sc_mail
VG Name mail_store
LV UUID piCHPm-insx-vlx7-5xsN-529c-QbDj-de33pe
LV Write Access read/write
LV Creation host, time sc-lvm, 2021-05-10 21:36:00 +0800
LV Status available
LV Size 190.00 GiB
Current LE 48640
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:2
--- Logical volume ---
LV Path /dev/cl/swap
LV Name swap
VG Name cl
LV UUID Q14j4n-WjLb-mKvW-ZxRm-sA02-J7r6-WdL7ZD
LV Write Access read/write
LV Creation host, time localhost, 2020-06-03 18:23:14 +0800
LV Status available
LV Size 2.00 GiB
Current LE 512
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:1
--- Logical volume ---
LV Path /dev/cl/root
LV Name root
VG Name cl
LV UUID fUDJAe-usKt-ncS3-anVi-2zD7-CHRk-bmunSf
LV Write Access read/write
LV Creation host, time localhost, 2020-06-03 18:23:14 +0800
LV Status available
LV Size <17.00 GiB
Current LE 4351
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 8192
Block device 253:0
(报错待解决:)
[root@sc-lvm ~]
xfs_growfs: /dev/mail_store/sc_mail is not a mounted XFS filesystem
[root@sc-lvm ~]
文件系统 类型 容量 已用 可用 已用% 挂载点
devtmpfs devtmpfs 886M 0 886M 0% /dev
tmpfs tmpfs 904M 0 904M 0% /dev/shm
tmpfs tmpfs 904M 8.8M 895M 1% /run
tmpfs tmpfs 904M 0 904M 0% /sys/fs/cgroup
/dev/mapper/cl-root xfs 17G 1.8G 16G 11% /
/dev/sda1 ext4 976M 136M 774M 15% /boot
tmpfs tmpfs 181M 0 181M 0% /run/user/0
/dev/mapper/mail_store-sc_mail xfs 150G 1.1G 149G 1% /mail
pv.vg扩容
[root@sc-lvm ~]
Physical volume "/dev/sdd" successfully created.
[root@sc-lvm ~]
Physical volume "/dev/sde" successfully created.
[root@sc-lvm ~]
PV /dev/sdb VG mail_store lvm2 [<100.00 GiB / 0 free]
PV /dev/sdc VG mail_store lvm2 [<100.00 GiB / 9.99 GiB free]
PV /dev/sda2 VG cl lvm2 [<19.00 GiB / 0 free]
PV /dev/sdd lvm2 [100.00 GiB]
PV /dev/sde lvm2 [100.00 GiB]
Total: 5 [<418.99 GiB] / in use: 3 [<218.99 GiB] / in no VG: 2 [200.00 GiB]
[root@sc-lvm ~]
Volume group "mail_store" successfully extended
本文内容由网友自发贡献,版权归原作者所有,本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容,请联系:hwhale#tublm.com(使用前将#替换为@)