system-storage-manager 是红帽RHEL7系统自带的一款存储管理工具 可以简化存储管理
本次实验使用一台Centos7的虚拟机，新添加3块8G的scsi硬盘 通过ssm自动完成lvm的创建 文件系统创建 挂载
[root@localhost ~]# yum -y install system-storage-manager
# 查看本机的存储信息
[root@localhost ~]# ssm list
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Device Total Mount point
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/dev/sda 20.00 GB PARTITIONED
/dev/sda1 1.00 GB /boot
/dev/sda2 2.00 GB SWAP
/dev/sda3 10.00 GB /
/dev/sdb 8.00 GB
/dev/sdc 8.00 GB
/dev/sdd 8.00 GB
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Volume Volume size FS FS size Free TypeMount point
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/dev/sda1 1.00 GB ext4 1.00 GB 827.75 MB part/boot
/dev/sda3 10.00 GB xfs 9.99 GB 8.74 GB part/
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[root@localhost ~]# ls /media/
cdrom lv1 lv2
# 使用 sd{b..d} 创建vg0/lv1 并格式化为 xfs 挂载到 /media/lv1
[root@localhost ~]# ssm create -s 400M -n lv1 -p vg0 --fstype xfs /dev/sd{b..d} /media/lv1
Physical volume "/dev/sdb" successfully created.
Physical volume "/dev/sdc" successfully created.
Physical volume "/dev/sdd" successfully created.
Volume group "vg0" successfully created
Logical volume "lv1" created.
meta-data=/dev/vg0/lv1 isize=512 agcount=4, agsize=25600 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=102400, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=855, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 10G 1.3G 8.8G 13% /
/dev/sda1 976M 97M 812M 11% /boot
/dev/mapper/vg0-lv1 397M 21M 377M 6% /media/lv1
# 扩容 /dev/vg0/lv1 增加60M
[root@localhost ~]# ssm resize -s +60M vg0/lv1
Size of logical volume vg0/lv1 changed from 400.00 MiB (100 extents) to 460.00 MiB (115 extents).
Logical volume vg0/lv1 successfully resized.
[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 10G 1.3G 8.8G 13% /
/dev/sda1 976M 97M 812M 11% /boot
/dev/mapper/vg0-lv1 457M 21M 437M 5% /media/lv1
# 创建一个vg0/lv1 的逻辑卷大小200M 使用ext4文件系统 挂载到 /media/lv2
[root@localhost ~]# ssm create -s 200M -n lv2 --fstype ext4 -p vg0 /media/lv2
Logical volume "lv2" created.
mke2fs 1.42.9 (28-Dec-2013)
Filesystem label=
OS type: Linux
Block size=1024 (log=0)
Fragment size=1024 (log=0)
Stride=0 blocks, Stripe width=0 blocks
51200 inodes, 204800 blocks
10240 blocks (5.00%) reserved for the super user
First data block=1
Maximum filesystem blocks=33816576
25 block groups
8192 blocks per group, 8192 fragments per group
2048 inodes per group
Superblock backups stored on blocks:
8193, 24577, 40961, 57345, 73729
Allocating group tables: done
Writing inode tables: done
Creating journal (4096 blocks): done
Writing superblocks and filesystem accounting information: done
[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 10G 1.3G 8.8G 13% /
/dev/sda1 976M 97M 812M 11% /boot
/dev/mapper/vg0-lv1 457M 21M 437M 5% /media/lv1
/dev/mapper/vg0-lv2 190M 1.6M 175M 1% /media/lv2
# vg0/lv2 缩小 40M 如果没有卸载会提示卸载处理完后会自动挂载
[root@localhost ~]# ssm resize -s-40M vg0/lv2
Do you want to unmount "/media/lv2" ? [Y|n] y
fsck from util-linux 2.23.2
/dev/mapper/vg0-lv2: 11/51200 files (0.0% non-contiguous), 12115/204800 blocks
resize2fs 1.42.9 (28-Dec-2013)
Resizing the filesystem on /dev/mapper/vg0-lv2 to 163840 (1k) blocks.
The filesystem on /dev/mapper/vg0-lv2 is now 163840 blocks long.
Size of logical volume vg0/lv2 changed from 200.00 MiB (50 extents) to 160.00 MiB (40 extents).
Logical volume vg0/lv2 successfully resized.
[root@localhost ~]# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
lv1 vg0 -wi-ao---- 460.00m
lv2 vg0 -wi-ao---- 160.00m
[root@localhost ~]# df -hT
Filesystem Type Size Used Avail Use% Mounted on
/dev/sda3 xfs 10G 1.3G 8.8G 13% /
/dev/sda1 ext4 976M 97M 812M 11% /boot
/dev/mapper/vg0-lv1 xfs 457M 21M 437M 5% /media/lv1
/dev/mapper/vg0-lv2 ext4 151M 1.6M 139M 2% /media/lv2
删除创建的 lvm vg pv
[root@localhost ~]# ssm remove -h
usage: ssm remove [-h] [-a] [items [items ...]]
positional arguments:
items Items to remove. Item could be device, pool, or volume.
optional arguments:
-h, --help show this help message and exit
-a, --all Remove all pools in the system.
[root@localhost ~]# ssm remove vg0/lv1 vg0/lv2
Do you really want to remove active logical volume vg0/lv1? [y/n]: y
Logical volume "lv1" successfully removed
Do you really want to remove active logical volume vg0/lv2? [y/n]: y
Logical volume "lv2" successfully removed
[root@localhost ~]# ssm remove vg0
Volume group "vg0" successfully removed
[root@localhost ~]# ssm remove /dev/sd{b..d}
SSM Info: Unable to remove '/dev/sdb'
SSM Info: Unable to remove '/dev/sdc'
SSM Info: Unable to remove '/dev/sdd'
SSM Error (2001): Nothing was removed!
[root@localhost ~]# pvremove /dev/sd{b..d}
Labels on physical volume "/dev/sdb" successfully wiped.
Labels on physical volume "/dev/sdc" successfully wiped.
Labels on physical volume "/dev/sdd" successfully wiped.
