计划使用zabbix监控管理全单位的PC的基本硬件信息,由于开始的规划的硬盘比较小，担心监控时磁盘不够。
在些先考虑能过LVM增容zabbix的数据库存储空间。
System Center 2012–VMM(virtral machine manager)-简称为：VMM
1.打开VMM管理台，找到增容的设备-右键属性-硬件配置-磁盘（增加）自定义需要增加的容量后，点击：确认
2.SSH连接Centos虚拟机器，查看新增硬盘设备
[root@localhost ~]# dmesg | grep “sd 1”
sd 1:0:0:0: Attached scsi generic sg1 type 0
sd 1:0:0:0: [sdb] 167772160 512-byte logical blocks: (85.8 GB/80.0 GiB) sd 1:0:0:0: [sdb] Write Protect is off sd 1:0:0:0: [sdb] Mode Sense: 0f 00 10 00 sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, supports DPO and FUA sdb: unknown partition table sd 1:0:0:0: [sdb] Attached SCSI disk已经在线增加硬盘完成。那么下面开始扩容LVM
3.开始创建分区
[root@localhost ~]# fdisk /dev/sdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel Building a new DOS disklabel with disk identifier 0x5ebe1b5d. Changes will remain in memory only, until you decide to write them. After that, of course, the previous content won't be recoverable.Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
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 #创建分区
Command action e extended p primary partition (1-4) p #主分区 Partition number (1-4): 1 #主分区为第一主分区 First cylinder (1-10443, default 1): 1 #磁盘的起始位置 Last cylinder, +cylinders or +size{K,M,G} (1-10443, default 10443): #默认全部都 Using default value 10443Command (m for help): p #查看创建的分区
Disk /dev/sdb: 85.9 GB, 85899345920 bytes
255 heads, 63 sectors/track, 10443 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: 0x5ebe1b5dDevice Boot Start End Blocks Id System
/dev/sdb1 1 10443 83882373+ 83 Linux #需要修改分区类型到LVM 修改分区类型：使用t 选项Command (m for help): t
Selected partition 1 Hex code (type L to list codes): 8e Changed system type of partition 1 to 8e (Linux LVM)查看一下分区类型并保存退出。
Command (m for help): p
Disk /dev/sdb: 85.9 GB, 85899345920 bytes
255 heads, 63 sectors/track, 10443 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: 0x0d3c2108Device Boot Start End Blocks Id System
/dev/sdb1 1 10443 83883366 8e Linux LVMCommand (m for help): w The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.创建PV并查看PV，使用命令：pvcreate 与 pvdisplay
[root@localhost ~]# pvcreate /dev/sdb1 dev_is_mpath: failed to get device for 8:17
Physical volume "/dev/sdb1" successfully created [root@localhost ~]# pvdisplay --- Physical volume --- PV Name /dev/sda2 VG Name VolGroup PV Size 19.51 GiB / not usable 3.00 MiB Allocatable yes (but full) PE Size 4.00 MiB Total PE 4994 Free PE 0 Allocated PE 4994 PV UUID qOY1yW-Ynm7-2d1g-2nMH-G6nN-evtl-Cjp02F "/dev/sdb1" is a new physical volume of "80.00 GiB" --- NEW Physical volume --- PV Name /dev/sdb1 VG Name PV Size 80.00 GiB Allocatable NO PE Size 0 Total PE 0 Free PE 0 Allocated PE 0 PV UUID Um4a9O-gFHb-Gg70-2gxB-v50x-mmuZ-XyYymh 扩展新硬盘到VG组中[root@localhost ~]# vgextend VolGroup /dev/sdb1 Volume group "VolGroup" successfully extended
[root@localhost ~]# vgdisplay --- Volume group --- VG Name VolGroup System ID Format lvm2 Metadata Areas 2 Metadata Sequence No 4 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 2 Max PV 0 Cur PV 2 Act PV 2 VG Size 99.50 GiB PE Size 4.00 MiB Total PE 25473 Alloc PE / Size 4994 / 19.51 GiB Free PE / Size 20479 / 80.00 GiB VG UUID iprcvl-yS2E-Z9t0-diqk-LaNC-rXqX-1Rd9VI增容到LV中
[root@localhost ~]# lvextend -L +80G /dev/VolGroup/lv_root Extending logical volume lv_root to 97.57 GiB
Insufficient free space: 20480 extents needed, but only 20479 available #报错 告诉我可用的容量为20479[root@localhost ~]# lvextend -L +79G /dev/VolGroup/lv_root
Extending logical volume lv_root to 96.57 GiB Logical volume lv_root successfully resized 查看了一下LV容量[root@localhost ~]# lvdisplay
--- Logical volume --- LV Path /dev/VolGroup/lv_root LV Name lv_root VG Name VolGroup LV UUID BJWEPf-lBb5-2hqB-om6A-UP31-mPI0-qPRxWZ LV Write Access read/write LV Creation host, time localhost.localdomain, 2015-05-29 23:23:23 +0800 LV Status available # open 1 LV Size 96.57 GiB #成功增容 Current LE 24722 Segments 2 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:0更新文件系统
resize2fs -f /dev/VolGroup/lv_root
-f 强制
[root@localhost ~]# resize2fs -f /dev/VolGroup/lv_root resize2fs 1.41.12 (17-May-2010) Filesystem at /dev/VolGroup/lv_root is mounted on /; on-line resizing required old desc_blocks = 2, new_desc_blocks = 7 Performing an on-line resize of /dev/VolGroup/lv_root to 25315328 (4k) blocks. The filesystem on /dev/VolGroup/lv_root is now 25315328 blocks long. df 查看一下增容的文件系统[root@localhost ~]# df -h Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup-lv_root 96G 8.8G 82G 10% / [root@localhost ~]#