extendfs | 扩充文件系统 | #extendfs /dev/vg00/rlvol3 |
lvmadm | 显示与卷组版本关联的限制 | #lvmadm -t -V 2.0 |
lvchange | 更改逻辑卷的特性 | #lvchange -t 60 /dev/vg00/lvol3 |
lvcreate | 在卷组中创建逻辑卷 | #lvcreate -L 100 /dev/vg00 |
lvdisplay | 显示有关逻辑卷的信息 | #lvdisplay -v /dev/vg00/lvol1 |
lvextend -m | 为逻辑卷添加镜像 | #lvextend -m 1 /dev/vg00/lvol3 |
lvextend -L | 增加逻辑卷的大小 | #lvextend -L 120 /dev/vg00/lvol3 |
lvlnboot | 准备将逻辑卷用作根区域、交换区域或转储区域 | #lvlnboot -d /dev/vg00/lvol2 |
lvreduce -L | 减小逻辑卷的大小 | #lvreduce -L 100 /dev/vg00/lvol3 |
lvreduce -m | 减小逻辑卷的镜像副本的数量 | #lvreduce -m 0 /dev/vg00/lvol3 |
lvremove | 从卷组中删除逻辑卷 | #lvremove /dev/vg00/lvol6 |
lvrmboot | 删除到根区域、交换区域或转储区域的逻辑卷链路 | #lvrmboot -d /dev/vg00/lvol2 |
lvsplit | 将一个镜像逻辑卷拆分为两个逻辑卷 | #lvsplit /dev/vg00/lvol4 |
lvsync | 同步过时的逻辑卷镜像 | #lvsync /dev/vg00/lvol1 |
pvchange | 更改物理卷的特性 | #pvchange -a n /dev/disk/disk2 |
pvck | 对物理卷执行一致性检查 | #pvck /dev/disk/disk47_p2 |
pvcreate | 创建用作卷组的一部分的物理卷 | #pvcreate /dev/rdisk/disk2 |
pvdisplay | 显示有关物理卷的信息 | #pvdisplay -v /dev/disk/disk2 |
pvmove | 将盘区从一个物理卷移动到另一个物理卷 | #pvmove /dev/disk/disk2 /dev/disk/disk3 |
pvremove | 从物理卷中删除LVM数据结构 | #pvremove /dev/rdisk/disk2 |
vgcfgbackup | 保存卷组的LVM配置 | #vgcfgbackup vg00 |
vgcfgrestore | 恢复LVM配置 | #vgcfgrestore -n /dev/vg00 /dev/rdisk/disk2 |
vgchange | 打开或关闭卷组 | #vgchange -a y /dev/vg00 |
vgchgid | 更改物理卷的卷组ID | #vgchgid /dev/rdisk/disk3 |
vgcreate | 创建卷组 | #vgcreate /dev/vg01 /dev/disk/disk2 /dev/disk/disk3 |
vgdisplay | 显示有关卷组的信息 | #vgdisplay -v /dev/vg00 |
vgextend | 通过添加物理卷来扩充卷组 | #vgextend /dev/vg00 /dev/disk/disk2 |
vgexport | 从系统中删除卷组 | #vgexport /dev/vg01 |
vgimport | 向系统添加现有卷组 | #vgimport -v /dev/vg04 |
vgmodify | 修改卷组的配置参数 | #vgmodify -v -t -n -r vg32 |
vgscan | 扫描卷组的系统磁盘 | #vgscan -v |
vgreduce | 通过从卷组中删除一个或多个物理卷来缩小卷组 | #vgreduce /dev/vg00 /dev/disk/disk2 |
vgremove | 从系统和磁盘中删除卷组定义 | #vgremove /dev/vg00 /dev/disk/disk2 |
vgsync | 同步卷组中的所有镜像逻辑卷 | #vgsync vg00 |
#fdisk /dev/sdb
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to sectors (command 'u').
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-261, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-261, default 261): +500M
Command (m for help): t
Selected partition 1
Hex code (type L to list codes): 8e // 8e为LVM格式的代码
Changed system type of partition 1 to 8e (Linux LVM)
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 2
First cylinder (66-261, default 66):
Using default value 66
Last cylinder, +cylinders or +size{K,M,G} (66-261, default 261): +500M
Command (m for help): t
Partition number (1-4): 2
Hex code (type L to list codes): 8e
Changed system type of partition 2 to 8e (Linux LVM)
Command (m for help): p
Disk /dev/sdb: 2147 MB, 2147483648 bytes
255 heads, 63 sectors/track, 261 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x2dfa2374
Device Boot Start End Blocks Id System
/dev/sdb1 1 65 522081 8e Linux LVM
/dev/sdb2 66 130 522112+ 8e Linux LVM
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
|
#pvcreate /dev/sdb1
Writing physical volume data to disk "/dev/sdb1"
Physical volume "/dev/sdb1" successfully created
#pvcreate /dev/sdb2
Writing physical volume data to disk "/dev/sdb2"
Physical volume "/dev/sdb2" successfully created
|
#vgcreate myvg1 /dev/sdb1 /dev/sdb2
Volume group "myvg1" successfully created
|
#lvcreate -L 800M -n mylv1 myvg1
Logical volume "mylv1" created
|
#vgdisplay
--- Volume group ---
VG Name myvg1
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 0
Max PV 0
Cur PV 2
Act PV 2
VG Size 1016.00 MiB
PE Size 4.00 MiB
Total PE 254
Alloc PE / Size 200 / 800.00 MiB
Free PE / Size 54 / 216.00 MiB
VG UUID 622JHS-61WH-VtKK-29i0-Ef0D-Icar-dBn83k
#lvdisplay
--- Logical volume ---
LV Name /dev/myvg1/mylv1
VG Name myvg1
LV UUID IdqHyQ-cEkp-Hz4X-ulPv-kvY3-nmTi-uRmGqw
LV Write Access read/write
LV Status available
# open 0
LV Size 800.00 MiB
Current LE 200
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:2
|
#mkfs.ext4 /dev/mapper/myvg1-mylv1
#mkdir /mylv1
#mount /dev/mapper/myvg1-mylv1 /mylv1
|
/dev/mapper/myvg1-mylv1 788M 17M 731M 3% /mylv1
|
#lvextend -L +100M /dev/mapper/myvg1-mylv1
Extending logical volume mylv1 to 900.00 MiB
Logical volume mylv1 successfully resized
# resize2fs /dev/mapper/myvg1-mylv1
resize2fs 1.41.12 (17-May-2010)
Filesystem at /dev/mapper/myvg1-mylv1 is mounted on /mylv1; on-line resizing required
old desc_blocks = 1, new_desc_blocks = 1
Performing an on-line resize of /dev/mapper/myvg1-mylv1 to 230400 (4k) blocks.
The filesystem on /dev/mapper/myvg1-mylv1 is now 230400 blocks long.
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/dev/mapper/myvg1-mylv1 886M 17M 829M 3% /mylv1 |