vmware+centos7.3 for LVM expansion

• Configuration environment: vmware+centos7.3.

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• The initial allocation disk size is not enough, need to increase space, LVM is a very practical solution, (from Amin) is the LVM composition diagram. Physical Volume>volume group>logical volume. This logical volume space is not enough, can rely on other surplus logical volume to expand. If there is no extra logical volume, you can re-partition from a new disk. Of course, the virtual machine can directly increase the disk space, this is not discussed. Here are the steps:

1. Create a new LVM disk environment

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2.fdisk partition, change the ID to 8e, divide this disk into 1 primary partitions and 1 logical partitions. (You can partition yourself according to the actual situation)

Fdisk/dev/sdb Start partition

N New Partition

P format as primary partition

+5g sector default, size 5G

T change ID to 8e

The rest of the partitioning operation is similar

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P View partition Status

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W Save exit

3.PVCREATE/DEV/SDB1 and PVCREATE/DEV/SDB5 Create physical volume

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4. PVS Display Physical Volume details

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5.vgcreate VG1/DEV/SDB1/DEV/SDB5 SDB1+SDB5 Synthesis Volume group

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6.vgs Display Volume Group details

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7.lvcreate-l 1000m-n lv1 VG1 Create a 1000M logical volume

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8.MKFS.EXT4/DEV/VG1/LV1 formats Lv1 as EXT4 or as XFS (centos7.3 default format), but XFS does not support scaling, suggesting or ext4

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9.mount/dev/vg1/lv1/mnt mount the LV1 to/mnt (you can also mount to the partition you want)

Df-h Display Disk Mount

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10. If you add automatic mount in/etc/fstab may restart error, need to enter the root password (Chinese box is not displayed Chinese characters), Vi/etc/fstab, comment out the automatic mount parameters, restart can

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One. normal use time a long, lv1 space is not enough, need to expand, first unload Mount Unomnt/mnt

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12.lvresize-l 4000m/dev/vg1/lv1 rewrite lv1 space is 4000M, because before VG1 altogether 10G, so expands to 4G no problem.

E2fsck-f/dev/vg1/lv1 Check for disk errors

RESIZE2FS/DEV/VG1/LV1 Updating Logical Volume Information

Re-mount using

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LV1 has become 4G after mounting

vmware+centos7.3 for LVM expansion