lvm systems

| | | +–+-+-+-+ +-+--+--+–+ | | | | | +-–/| | | | | | | | | | | | +–+-+-+-+ +--+--+–+ | | | Logical | | Logical | | | | Volume | | Volume | | | | | | | | | | /home | | /var | | | + ———— + + ———— –+ | + ——————————— –+ This shows us two file systems that span two disks. The/home file system contains 4 physical partitions, and the/var file system contains 2. Easily adjust partitions and make snapshots using

another point is that mount, which is temporarily mounted, will not be mounted when the system is restarted, so it is necessary to modify the path/etc/fstab the file if it is to be permanently active. The mount-a (equivalent to a flush mount) can be permanently enforced. such as: to the end of this experiment! Summary and supplement: 1. The structure of the hard disk is divided into physical structure and data structure, the physical structure is composed of disk and head, and the data stru

existing hard disk into a Swap file system and mount it to the existing swap space. However, although the previously attached swap space does not need to be formatted, the execution efficiency of the subsequently added swap space is not as good as that of the original swap partition. To this end, the method of planting to increase the Swap space is also a last resort. Is there any other solution in the Unix operating system? In order to allow Unix operating

Perform fsck repair on the file system built under LVM-Linux general technology-Linux technology and application information. The following is a detailed description. In linux, if an error occurs in the file system created on the lvm, especially in the root partition, because the file system cannot be mounted for file system detection fsck, therefore, you can only start from the CD to enter the rescue mode.

LVM (Logical Volume Manager) is a logical mechanism for managing disk partitions in a Linux system, a logical layer built on disk and partition, capable of dynamically adjusting disk capacity while keeping existing data intact, thus increasing the flexibility of disk Management. 1. 执行命令 fdisk -l 来查看硬盘的设备名称及位置，此处添加了两块各为20G大小的硬盘2. 执行命令 fdisk /dev/sdb 划分分区，并更改分区类型为LVM3. 以上为硬盘sdb的设置，继续按照上步骤设置硬盘sdc4. 将sdb1和sdc1转换成物理卷: pvcreate /dev/sdb1 dev/sdc15. 将两个物理卷创

Tags: linux LVM snapshotLVM is the Logical Volume Manager Logical Volume management shorthand, the main function of the volume can be easily expanded and reduced dynamically, greatly improving the flexibility of disk management, the principle of the following points1. The physical disk is formatted as a PV (physical Volume) physical volume, and the space is divided into a PE (physical Extend) Physical extension2. Add PV to the VG (Volume Group) volume

system's storage device: The hard disk, such as:/DEV/HDA1,/DEV/SDA, etc., is the lowest layer of storage system storage unit.Physical volume (physical volume): a physical volume refers to a hard disk partition or a device (such as RAID) that logically has the same function as a disk partition, which is the basic storage logic block of LVM, but is compared to basic physical storage media (such as partitions, disks, etc.) and contains management parame

function as a disk partition, which is the basic storage logic block of LVM, but is compared to basic physical storage media (such as partitions, disks, etc.) and contains management parameters related to LVM.Volume group (Volume Group): LVM volume groups are similar to physical hard disks in non-LVM systems, which co

as RAID) that logically has the same function as a disk partition, which is the basic storage logic block of LVM, but is compared to basic physical storage media (such as partitions, disks, etc.) and contains management parameters related to LVM.Volume group (Volume Group): LVM volume groups are similar to physical hard disks in non-LVM

partition or a device (such as RAID) that logically has the same function as a disk partition, which is the basic storage logic block of LVM, but is compared to basic physical storage media (such as partitions, disks, etc.) and contains management parameters related to LVM.Volume group (Volume Group): LVM volume groups are similar to physical hard disks in non-LVM