One of the most common PV-related parameter options is-T, which is the time (timeout value) That LVM waits for the hard disk ), the default value is 30 seconds. You can run the following command to change the timeout value to 120 seconds: # pvchange-T 120/dev/DSK/cxtxdx to remove Timeout:
# Pvchange-T 0/dev/DSK/cxtxdx
The vgvgchange command can be used to activate/not activate VG. Max_pe can only be specified when
Article Title: How to migrate VG and file systems in Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
In LINUX, if you want to migrate the file system on one host to another, and the file system is created based on LVM, you can use the VG Import and Export function
Tags: simple operation of Linux LVMabout theVgthe Operationthe VG command will be moreVGS: Brief display of VG informationVgdisplay: Displays the details of the VGVgextend: Extended VGVgcreate: Create VGVgreduce:VG Reduced capacityVgscan:VG ScanVgremove: Delete VGVgck: Detecting VGVgimport: Import VGVgexport: Exporting VGVgrename:VG RenameVgsplit:VG SegmentationCreateVg- l Specifies the maximum number of
system/Dev/hdb1 1 2080 1048288 + 5 extended/Dev/hdb5 1 2080 1048257 8e Linux LVM# Partprobe (this command allows the kernel to re-read the disk partition table and the modification takes effect)
Ii. Create LVM1. Create a PV DiskSolution:/dev/HDB --> lvm2 [1024 MB]/Dev/HDD --> lvm2 [1024 MB]
Operation:
# Pvcreate/dev/hdb5/dev/hdd5# Pvscan# Pvdisplay"/Dev/hdb5" is a new physical volume of "1023.69 MB"--- New physical volume ---PV name/dev/hdb5VG namePV size 1023.69 MBAllocatable
End Blocks Id System/DEV/SDB1 1 1306 10490413+ 8e Linux LVMCommand (M for help): W {confirm the creation of OK and enter W save3. Add a second disk repeat above 1.2. Operation4. Check if two LVM disks are OK[Email protected] ~]# fdisk-l |grep LVM/DEV/SDB1 1 1306 10490413+ 8e Linux LVM/DEV/SDC1 1 1306 10490413+ 8e Linux LVM5. Create PV[Email protected] ~]# PVCREATE/DEV/SDB1/DEV/SDC1Dev_is_mpath:failed to get device for 8:17Physical volume "/DEV/SDB1" successfully createdDev_is_mpath:failed to ge
The disk is full, because the use of LVM, want to expand the need to find whether LVS or lvdisplay such commands will report the same error:[[email protected] qwang]# LVS byte 1591 - ): unexpected token for VG Fedora. Skipping volume group Fedora Internal error:volume group Fedora is not unlockedA variety of search without fruit, turn out a bug:https://bugzilla.redhat.com/show_bug.cgi?id=1119045Read the comment 30, try it.uname -alinux localhos
...... What is the draft I wrote yesterday? Where did I go ?? Forget it. If the disaster happens, blame yourself. If you lose it, lose it.
The book was written last night. It seems that I am too lazy to write something, and I plan to look down on the world where I write a book on my own. Then I save the draft, lost the draft-today's work is really full, because the new task is to deal with the Conformance Test of vg11.
Well, it's been a year since VG
Preface:Pre-storage is not well planned, business is rapidly expanding, high data security requirements (offsite, more one copy), a lot of demand? NM Doing the work is going to be the pit daddy every now and then.!particularly Real Production ENV 、、、、01, do not restart to identify the newly added hard drive, as we all know Hotplug Storage MediaPerform echo "---" >/sys/class/scsi_host/host*/scanPerform the above re-scan the newly added PV log02, based on the original LVM, using the newly added PV
Check the disk and VG information on the host and confirm that hdisk2 and hdisk3 are none.# Lspv
Hdisk0 00f7970a00185b33 rootvg active
Hdisk1 00f7970acb4eb18d rootvg active
Hdisk2 00f7970a972c42df none active
Hdisk3 00f7970a072a6431 none activeCreate VGMkvg-F-y datavgHdis2Error 0516-1398 reportedSolution:
Delete PV and reload# Chdev-l hdisk1-A Pv = clear# Rmdev-RDL hdisk1# CfgmgrThen create a new one.
Mkvg-F-y datavgHdis2
This article is from the "may
Physical Volume (PV): A physical volume is a separate hard drive (Hdisk0, Hdisk1 ...). )。
Volume group (VG): A volume group consists of one or several physical volumes (hard disks).
Logical Volume (LV): A volume group can divide several logical volumes. A logical volume may be physically discontinuous and may span multiple physical volumes in a volume group.
File System (FileSystem): A hierarchical tree structure consisting of files and directories
LVM is a powerful feature of Linux, and mastering the common functions of LVM is an essential skill that eliminates some nonsense here.
The following are common methods of operation:New mounted bare Disk create partition# FDISK/DEV/SDBIf it is created as the following partition/dev/sdb1/dev/sdb2/dev/sdb3Create PV# PVCREATE/DEV/SDB1/DEV/SDB2Create VG# vgcreate VGORADATA/DEV/SDB1/DEV/SDB2Create LV# lvcreate-l 90g-n lvoradata01 VgoradataFormat LV (Rhel
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