LVM 在操作系统和磁盘之间创建了一个虚拟层。LVM 不是一个驱动器持有一定数量的分区,而是创建一个统一的存储池(称为 卷组(Volume Group)),跨越任意数量的物理驱动器(称为 物理卷(Physical Volume))。使用卷组中可用的存储,LVM 可以为你的操作系统提供类似磁盘和分区的功能。
/dev/VolGroup00/LogVol01 swap swap defaults 0 0 3、在VMware里面新增一块SCSI虚拟硬盘 确认虚拟系统RHEL4处于关机状态,用VMware打开Red Hat Enterprise Linux 4.vmx,点击Edit virtual machine setings,点击Add按钮,选中Hard Disk,点击Next按钮,选中Create a new virtual disk,点击Next按钮,选中SCSI,点击Next按钮,...
Disk /dev/mapper/cl-root: 27 GiB, 28936503296 bytes, 56516608 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk /dev/mapper/cl-swap: 2 GiB, 2197815296 bytes, ...
Disk label type: dos Disk identifier:0x000ac88aDevice Boot Start End Blocks Id System/dev/sda1 *20482099199104857683Linux/dev/sda220992002663383031321195528e Linux LVM 2. 查看磁盘占用情况 df-lh Filesystem Size Used Avail Use%Mounted on/dev/mapper/cl-root 50G 24G 27G47% /devtmpfs5.8G05.8G0% ...
180 days, whichever comes first. Use tune2fs -c or -i to override. 2.创建pv [root@nginx ~]# pvcreate /dev/sda3 Writing physical volume data to disk "/dev/sda3" Physical volume "/dev/sda3" successfully created #查看已创建的pv ...
2. 卷组Volume group (VG):将一组物理卷收集为一个管理单元。Group of physical volumes that are used as storage volume (as one disk). They contain logical volumes. Think of volume groups as hard drives. 3. 逻辑卷Logical volume (LV):虚拟分区,由物理区域(physical extents)组成。A "virtual/logi...
Physical volume "/dev/sdb1" successfully created #successfully 表示 pv 创建成功 Writing physical volume data to disk "/dev/sdb2"Physical volume "/dev/sdb2" successfully created 2.3 制作 VG [root@localhost Desktop]# vgcreate Vg1 /dev/sdb1 /dev/sdb2 Volume group "Vg1" successfully created ...
n add a new partition o create a new empty DOS partition table p print the partition table q quit without saving changes s create a new empty Sun disklabel t change a partition's system id u change display/entry units v verify the partition table ...
逻辑卷管理(Logical Volume Manager,LVM)通过在硬盘和分区之上建立一个逻辑层,将磁盘或分区划分为相同大小的 PE(Physical Extents)单元,不同的磁盘或分区可以划归到同一个卷组(VG,Volume Group),在 VG 上可以创建逻辑卷(LV,Logical Volume),在 LV 上可以创建文件系统。 相较于直接使用磁盘分区的方式,LVM 的优势...
(默认激活)lvm vgchange -a y company 0 logical volume(s) in volume group company now active将分区加入到逻辑卷组lvm vgextendcompany/dev/sdb1 Physical volume /dev/sdb1 is already in volume group companyUnable to add physical volume /dev/sdb1 to volume group company.创建逻辑卷在最初时将它的...