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LVM (Logical Volume Manager) Logical volume management is a common operation in Linux Disk Management, this article mainly describes the basic principles of LVM and the operation of the expansion and reduction of LVM.LVM is essentially a software way to combine multiple physical partitions or disks into a variable-size volume group of VG, and then make a variable
|grep xxxkill -9 pid2.卸载挂载目录umount /home3.检查vg_ddz-lv_home文件的错误性e2fsck -f /dev/mapper/vg_ddz-lv_home4.调整/home为100Gresize2fs -p /dev/mapper/vg_ddz-lv_home 80G5.缩减物理边界lvreduce -L 80G /dev/mapper/vg_ddz-lv_home输入y6.重新挂载/homemount /home7.查看卷组vg可用空间vgs8.新增逻辑卷lvcreate -L 150G -n lv_ddhome vg_ddz9.格式化逻辑卷mke2fs -t ext4 /dev/mapper/vg_ddz-lv_ddhome10.挂载目录rm -rf /ddhome mkdir /ddhomemount /dev/mapper/vg_ddz-lv_ddhome /ddhome11.查看结果df -hExt3 upgrade to Ext4umount /ddhomee2fsck -f /dev/mapper/vg_ddz-lv_ddh
Centos LVM is a mechanism for managing disk partitions in a Linux environment, a logical layer that is built on top of hard disks and partitions, under the file system, and improves disk partition management flexibility. RHEL5 the default installed partition format is the LVM logical volume format, it should be noted that the/boot partition cannot be created base
LVM is short for LogicalVolumeManager (logical volume management). It is a mechanism for managing disk partitions in Linux. it is implemented by HeinzMauelshagen on the Linux2.4 kernel. I. general idea: partition into LVM format (8e) -- create PV -- create VG -- create LV -- Format partition -- MOUNT partition -- e2fsad LVM
First, what is LVM :LVM (Logical Volume Manager) LVM is the short name of the Logical Disk volume management (Logical Volume Manager), which is a mechanism for managing disk partitions in a Linux environment, and LVM is a logical layer on top of hard disks and partitions to
Ext.: https://jingyan.baidu.com/article/25648fc18f22b29191fd0011.htmlYou can see the original picture without seeing it clearlyLVM is the short name of the Logical Disk volume management (Logical Volume Manager), which is a mechanism for managing disk partitions in a Linux environment, and LVM is a logical layer on top of hard disks and partitions to improve the flexibility of disk partition management.
0X00 LVM is what, what's the use The full name of the LVM is Logical Volume Manager (Logical Volume management). is a disk partition management mechanism under Linux to facilitate the expansion and compression of partitions (logical partitions). The simplest way to understand the original disk partition management is simply to partition each individual disk and
complete, the result is as follows: 4. Format md0 and mount it to the/backup directory, and set mke2fs-j/dev/md0 monut/dev/md0/backup to boot: Vim/etc/fstab 7, LVM: by Linux kernel module DM: device Mapper is a logical Device. 1. the LVM device provides RAID, LVM2, block photos, multi-path, and other functions. In linux
Linux Tutorial: Use LVM logical volume manager to manage flexible storage 1. LVM IntroductionLVM (logical scroll manager) is an inaccessible manager for Linux system devices. It dynamically changes the size of our devices. If the file system requires more space, you can allocate the available space of the volume group
Partition magic can be said to be a partition tool in windows. If you want to share a hard disk, you can do everything you need. What about Linux? Fdisk cannot properly resize the partition size. It is very troublesome to change the partition size once fdisk is used. Is there no way in Linux? None! We also have the hardware disk partition management super weapon-LVM
Linux LVM Logical Volume configuration process detailedMany Linux users encounter the dilemma of installing the operating system: how to accurately evaluate and allocate the capacity of each hard disk partition, if the initial evaluation is not accurate, once the system partition is not enough, you may have to back up, delete the relevant data, or even be forced
Mode: LVM modeThe first step is to increase the partition:1, vm-> edit settings, disk expansion under the Disk (menu operation no longer redundant).2. Use the FDISK commandFdisk/dev/sda# Use the n command to build a P-type disk, and then change the ID to 8e (LVM category) with the T command.# p Check:disk/dev/sda:17.1 GB, 17179869184 bytes255 heads, Sectors/track, 2088 cylindersUnits = Cylinders of 16065 *
What is LVM?LVM is a shorthand for Logical Volume Manager (Logical Volume management), which is a mechanism for managing disk partitions in a Linux environment, allowing users to easily adjust the size of each partition without having to stop.Why use LVM?The perfect solution is to be able to adjust the size of the file
/snap/Before I imported some data in/MNT/LVM, we found that the original LV and LV snapshots were mounted with the same capacity information Third, the use of snapshot recovery systemwhen recovering a system with a snapshot, the amount of data to be recovered is not greater than the maximum range that the snapshot area can withstand① Modifying the contents of the original LVM[[email protected] ~]# dd
=" Qq20161020115634.png "alt=" Wkiom1giqgqd-0avaadb9josurm870.png-wh_50 "/>③ Deleting a volume group (VG)Vgremove Vgtest650) this.width=650; "Src=" Http://s1.51cto.com/wyfs02/M00/89/1E/wKiom1gIQL7TQUaFAADeKhvumtk901.png-wh_500x0-wm_3 -wmp_4-s_2377612031.png "title=" Qq20161020115800.png "alt=" Wkiom1giql7tquafaadekhvumtk901.png-wh_50 "/>④④ removing PVPvremove/dev/sdb/dev/sdc650) this.width=650; "Src=" Http://s4.51cto.com/wyfs02/M01/89/1B/wKioL1gIQSGD1gLSAADQuQfTf7s357.png-wh_500x0-wm_3 -wmp_4-s_
explanation " PV (physical Volume): physical volume, at the bottom of the LVM, can be a physical hard disk or partition. PP (physical Extend): physical area, PV can be used to allocate the smallest storage unit, can be created when the PV, such as 1M, 2M, 4M, 8M, 32M, 64M ... The PE size of all PV that comprise the same VG should be the same. VG (Volume Group): Volume Group, Built on PV, can contain one t
volume group.Volume (LV). To use a logical volume to format it (that is, to set up a file system)V: The superiority of LVM over the direct use of physical storage:1. Simple to single logical volume operation can change the size of storage capacity2. Disk Fragmentation3. You can use the snapshotVI: The detailed implementation process of LVM:1. Divide the SDB1,SDB2 two partitions on the newly added sdb hard
Comprehensive use of RAID and LVM in linux !, Raidlvm The LVM can elastically adjust the filesystem size, but the disadvantage is that it may not have the acceleration and hardware backup (unlike snapshot) functions. Disk arrays provide performance and backup functions, but cannot provide advantages similar to LVM. In
Linux LVM-File System Extension LVM extent volume size+ The current LVM manages a disk/dev/sda+ Method 1: expand the existing disk sda and add the added space to the maximum volumn.+ Method 2: Add a new disk sdb and extend the added space to the largest volumn. 1. Expand the existing Disk/dev/sda (storage expansion 5 G
I remember the confusion in my mind when I first came into contact with LVM logical volume management, because I was unable to clearly distinguish the terms involved. After my own experiments, here, I will record my learned experiences and share them with my friends who are new to LVM logical volume management. The biggest advantage of LVM is that it can dynamica
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