2016 re-picking Linux shards

1. Adding a new hard disk to a Linux server

A fdisk/dev/sdb or a pvcreate/dev/sdb.

M

N

P

1

T

82

W

Q

Two mkfs.ext3/dev/sdb1 or mkfs-t ext3/dev/sdb1 or mkfs-j/dev/sdb1

Three MKDIR/NEWFS

Mount/dev/sdb1/newfs

Add swap

1. Hard disk (primary partition, with logical partition can become switch partition, but logical partition logical partition need to restart machine)

A fdisk/dev/sdb

M

T

82

W

Q

Two MKSWAP/DEV/SDB1

Three activations: SWAPON/DEV/SDB1 or off SWAPOFF/DEV/SDB1

2. Documents

Touch/swapfile

DD If=/dev/zero of=/swapfile bs=1024 count=5000 (500*1024byte)

Mkswap/swapfile

Swapon/swapfile

About physical volume, physical disk volume, logical volume, logical disk volume, and logical disks management

PV: is a partition of a hard disk so understand

Pe:pe=lv,pe is a basic unit that makes up PV

LV:LV is composed of le ...

Le=pe

LVM: is a collection of LV.

Physics Volume

Physics extent

Logic Volume

Logic Extend

Logic Volume Manage

PVCREATE/DEV/SDB Create a partition or Fdisk/dev/sdb N p 1

Vgcreate MYVOLUME/DEV/SDB1/DEV/SDC1 #创建一个VG (consisting of SDB1,SDC1)

Vgextend Myvolume/dev/sde1 #sde1加到myvolume

Vgdisplay volgroup00

And then there's lvcreate.

Lvcreate-l (50*32m) myvolume-n mylgical

Mkfs-j/dev/myvolume/mylogical

Mount-t Ext3/dev/myvolume/mylogical/mnt/newvolume

Lvextend-l 2000m/dev/myvolume/mylogical # put the extra space in the Myvolume

This article is from the "samly" blog, make sure to keep this source http://323248.blog.51cto.com/313248/1813943

2016 re-picking Linux shards