Add space to the root partition and create logical volumes on VMware

1, in VMware add space to the root partition

509 cd/sys/class/scsi_host/ See if the added drive information is in the system

521 echo "---" >/sys/class/scsi_host/host0/scan loading hard disk information

522 echo "---" >/sys/class/scsi_host/host1/scan

523 echo "---" >/sys/class/scsi_host/host2/scan

524 ls/dev/sd* To see if the information was loaded successfully

525 PVCREATE/DEV/SDC Create a physical volume

526 Vgextend VG_CCMSDZHKJR/DEV/SDC to add a physical volume to a volume group

529 Lvresize-r-L +100%FREE/DEV/VG_CCMSDZHKJR-LOGVOL00/DEV/SDC Add all the space of SDC, the new drive, to the root partition logical volume

/dev/vg_ccmsdzhkjr-logvol00 is the path to the root partition

535 DF-

2. Add the remaining space on the same disk to the root partition

By using VGS to see that there is still 348G of space left unused

[Email protected] ~]# VGS

VG #PV #LV #SN Attr vsize vfree

VolGroup 1 2 0 wz--n-465.27g 348.08g

Lvextend-l +348g/dev/mapper/volgroup-logvol01 Add the remaining hard disk block to the root partition,/DEV/MAPPER/VOLGROUP-LOGVOL01 is the name of the root partition

RESIZE2FS/DEV/MAPPER/VOLGROUP-LOGVOL01 & Assigning a file system to the root partition

Next, use Df-h to see the space of the root partition slowly increasing.

3. Create a logical volume on a physical machine or on Xen

XM Block-attach 188077-chenyi file://vdisk/19066-b.img xvdb w This command should be executed when the new drive does not take effect

Create a logical volume for a new hard disk partition

echo "scsi add-single-device 0 0 2 0" >/PROC/SCSI/SCSI load the hard drive you just added

0 0 2 0 Here the 2 represents the new drive letter

Pvcreate/dev/sdb Creating a physical volume

Vgextend Vg_ccmsdzhkjr/dev/sdb to add a physical volume to a volume group

If you are joining a new volume group, you can use the Vgcreate vg0 New Volume group name/dev/sdb the physical volume name

Lvcreate to create a logical volume command:

Format 1: lvcreate-l +100%free - n lv_data vg_data

-L +100%free: Sets the size of the logical volume to the remaining space of the hard disk

-L 512M: Sets the size of the logical volume to 512M.

-N Lv_data: Sets the logical volume's name as Lv_data; notation:/dev/Volume Group name/data

vg_data: The name of the volume group, which is the name of the volume group to be added.

After creating the logical disk, format the , /dev/maaper below

MKFS.EXT4/DEV/MAAPER/LV volume name -VG volume name

after formatting is mounted to the directory ,

when it is mounted.

MOUNT/DEV/MAAPER/LV volume name -VG volume name /vdisk/disk1 mount directory

If you need to add a disk to a hard disk file system to a virtual machine, you can use the following command

DD If=/dev/zero of=/vdisk/vmtest1-1.img bs=1g count=0 seek=50 represents the creation of a mirrored file with a capacity of 50G

SEEK=50 Representative 50G

BS=1G represents G as Unit

DD If=/dev/zero of=/vdisk/187058-02.img count=50 seek=0 bs=1g representative writes a 50G file

4. Add system disk capacity to XFS file system in Centos7

Xfs_growfs/dev/mapper/centos-root

Add space to the root partition and create logical volumes on VMware