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Centos7使用SSM管理LVM卷具體方法
ssm全稱Spring+SpringMVC+MyBatis，是目前比較主流的Java EE企業(yè)級(jí)框架，適用于搭建各種大型的企業(yè)級(jí)應(yīng)用系統(tǒng)。ssm還可指“軟系統(tǒng)方法論”，是一項(xiàng)運(yùn)用系統(tǒng)思考解決非系統(tǒng)問題的定性研究技術(shù)，下面為大家講解一下Centos7使用SSM管理LVM卷具體方法。
環(huán)境
-
Centos7.7 Minimal
-
system-storage-manager 0.4-9
安裝SSM
[root@localhost ~]# yum -y install system-storage-manager
列出設(shè)備、卷等信息
使用ssm list 顯示所有檢測(cè)到的設(shè)備、池、卷和快照的信息：
[root@localhost ~]# ssm list
-----------------------------------------------------------
Device Free Used Total Pool Mount point
-----------------------------------------------------------
/dev/sda 40.00 GB
/dev/sda1 1.00 GB /boot
/dev/sda2 4.00 MB 38.99 GB 39.00 GB centos
/dev/sdb 2.00 GB
/dev/sdc 2.00 GB
/dev/sdd 2.00 GB
-----------------------------------------------------------
--------------------------------------------------
Pool Type Devices Free Used Total
--------------------------------------------------
centos lvm 1 4.00 MB 38.99 GB 39.00 GB
--------------------------------------------------
--------------------------------------------------------------------------------------
Volume Pool Volume size FS FS size Free Type Mount point
--------------------------------------------------------------------------------------
/dev/centos/root centos 36.99 GB xfs 36.97 GB 34.44 GB linear /
/dev/centos/swap centos 2.00 GB linear
/dev/sda1 1.00 GB xfs 1014.00 MB 864.65 MB /boot
--------------------------------------------------------------------------------------
[root@localhost ~]#
可以使用ssm list –help查詢幫助信息。
創(chuàng)建新的池、邏輯卷、和文件系統(tǒng)
使用/dev/sdb,/dev/sdc,/dev/sdd三塊硬盤創(chuàng)建vg0池，創(chuàng)建lv1邏輯卷，大小為1G，格式化為xfs文件系統(tǒng)格式，掛載到/mnt/volume1目錄。
# 創(chuàng)建掛載目錄
[root@localhost ~]# mkdir /mnt/volume1
# 創(chuàng)建邏輯卷
[root@localhost ~]# ssm create -s 1G -n lv1 -p vg0 --fstype xfs /dev/sd{b,c,d} /mnt/volume1
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=65536 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=262144, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
# 查看是否掛載
[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 898M 0 898M 0% /dev
tmpfs 910M 0 910M 0% /dev/shm
tmpfs 910M 9.6M 901M 2% /run
tmpfs 910M 0 910M 0% /sys/fs/cgroup
/dev/mapper/centos-root 37G 2.6G 35G 7% /
/dev/sda1 1014M 150M 865M 15% /boot
tmpfs 182M 0 182M 0% /run/user/0
/dev/mapper/vg0-lv1 1014M 33M 982M 4% /mnt/volume1
–fstype選項(xiàng)支持的文件類型，目前支持的有：
-
ext3
-
ext4
-
xfs
-
btrfs
-s選項(xiàng)指定邏輯卷的大小。
-n選項(xiàng)指定指定邏輯卷的名稱
-p選項(xiàng)需要使用哪一個(gè)池，如果池不存在，會(huì)創(chuàng)建池。
/dev/sd{b,c,d}使用/dev/sdb , /dev/sdc ,/dev/sdd這三個(gè)磁盤。
擴(kuò)展邏輯卷
ssm resize命令可以調(diào)整卷的大小。下面的例子是給lv1邏輯卷增加2G空間，總空間為3G。
[root@localhost ~]# ssm resize -s +2G vg0/lv1
Size of logical volume vg0/lv1 changed from 1.00 GiB (256 extents) to 3.00 GiB (768 extents).
Logical volume vg0/lv1 successfully resized.
[root@localhost ~]# df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 898M 0 898M 0% /dev
tmpfs 910M 0 910M 0% /dev/shm
tmpfs 910M 9.6M 901M 2% /run
tmpfs 910M 0 910M 0% /sys/fs/cgroup
/dev/mapper/centos-root 37G 2.6G 35G 7% /
/dev/sda1 1014M 150M 865M 15% /boot
tmpfs 182M 0 182M 0% /run/user/0
/dev/mapper/vg0-lv1 3.0G 33M 3.0G 2% /mnt/volume1
Centos7使用SSM管理LVM卷Centos7使用SSM管理LVM卷
創(chuàng)建快照
為lv1邏輯卷創(chuàng)建快照
[root@localhost ~]# ssm snapshot /dev/vg0/lv1
Rounding up size to full physical extent 412.00 MiB
Logical volume "snap20200325T195111" created.
[root@localhost ~]# ssm list snap
------------------------------------------------------------------------
Snapshot Origin Pool Volume size Used Type
------------------------------------------------------------------------
/dev/vg0/snap20200325T195111 lv1 vg0 412.00 MB 0.00 KB linear
刪除卷、池
在這里刪除卷和池。首先要卸載分區(qū)。
[root@localhost ~]# umount /mnt/volume1/
# 刪除vg0池和lv1卷
[root@localhost ~]# ssm remove vg0
Do you really want to remove volume group "vg0" containing 2 logical volumes? [y/n]: y
Do you really want to remove active origin logical volume vg0/lv1 with 1 snapshot(s)? [y/n]: y
Logical volume "snap20200325T195111" successfully removed
Logical volume "lv1" successfully removed
Volume group "vg0" successfully removed
然后從物理卷里面把/dev/sdb,/dev/sdc,/dev/sdd移除掉。
[root@localhost ~]# pvremove /dev/sd{b,c,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.
總結(jié)
SSM通過創(chuàng)建統(tǒng)一的用戶界面來緩解這一問題。
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