新增存儲用Parted分區並建LVM卷

時間 2020-02-08

標籤新增存儲 parted 分區 lvm 欄目 Linux 简体版

原文原文鏈接

新增存儲用Parted分區並建LVM卷node

一，Parted分區linux

1，parted分區 www.2cto.com 緩存

# parted /dev/sdaapp

GNU Parted 2.1ide

使用 /dev/sda測試

Welcome to GNU Parted! Type 'help' to view a list of commands.ui

(parted) help 首先看看幫助熟悉下 spa

align-check TYPE N check partition N for TYPE(min|opt) alignment操作系統

check NUMBER do a simple check on the file systemorm

cp [FROM-DEVICE] FROM-NUMBER TO-NUMBER copy file system to another partition

help [COMMAND] print general help, or help on COMMAND

mklabel,mktable LABEL-TYPE create a new disklabel (partition table)

mkfs NUMBER FS-TYPE make a FS-TYPE file system on partition NUMBER

mkpart PART-TYPE [FS-TYPE] START END make a partition

mkpartfs PART-TYPE FS-TYPE START END make a partition with a file system

move NUMBER START END move partition NUMBER

name NUMBER NAME name partition NUMBER as NAME

print [devices|free|list,all|NUMBER] display the partition table, available devices, free space, all found partitions,

or a particular partition

quit exit program

rescue START END rescue a lost partition near START and END

resize NUMBER START END resize partition NUMBER and its file system

rm NUMBER delete partition NUMBER

select DEVICE choose the device to edit

set NUMBER FLAG STATE change the FLAG on partition NUMBER

toggle [NUMBER [FLAG]] toggle the state of FLAG on partition NUMBER

unit UNIT set the default unit to UNIT

version display the version number and copyright information of GNU Parted

(parted) mktable

新的磁盤標籤類型？ gpt GPT就是GRUB分區表，若是是MBR，最大支持2T分區

(parted) p 打印一下信息這裏的4398GB是磁盤容量

Model: DELL MD32xx (scsi)

Disk /dev/sda: 4398GB

Sector size (logical/physical): 512B/512B

Partition Table: gpt

Number Start End Size File system Name 標誌

(parted) mkpart #新建分區

分區名稱？ []? #默認

文件系統類型？ [ext2]? #默認

起始點？ 0G #起點

結束點？ 4398G #終點

(parted) p

Model: DELL MD32xx (scsi)

Disk /dev/sda: 4398GB

Sector size (logical/physical): 512B/512B

Partition Table: gpt

Number Start End Size File system Name 標誌

1 1049kB 4398GB 4398GB

(parted) toggle 1 lvm #標記成lvm

(parted) p

Model: DELL MD32xx (scsi)

Disk /dev/sda: 4398GB

Sector size (logical/physical): 512B/512B

Partition Table: gpt

Number Start End Size File system Name 標誌

1 1049kB 4398GB 4398GB lvm

(parted) quit

信息: You may need to update /etc/fstab.

2，一樣的方法對sdb,sdc,sdd 分區

二，建立LVM，分三大步，分別建PV,VG,LVM

1，建PV

# pvcreate /dev/sda1 /dev/sdb1 /dev/sdc1 /dev/sdd1

Writing physical volume data to disk "/dev/sda1"

Physical volume "/dev/sda1" successfully created

Writing physical volume data to disk "/dev/sdb1"

Physical volume "/dev/sdb1" successfully created

Writing physical volume data to disk "/dev/sdc1"

Physical volume "/dev/sdc1" successfully created

Writing physical volume data to disk "/dev/sdd1"

Physical volume "/dev/sdd1" successfully created

2,建VG

# vgcreate md3200 /dev/sda1 /dev/sdb1 /dev/sdc1 /dev/sdd1

Volume group "md3200" successfully created

# lvcreate -n md3200lv1 -L 8T md3200

Logical volume "md3200lv1" created

You have new mail in /var/spool/mail/root

3,建LVM

#lvcreate -n md3200lv1 -L 8T md3200

Logical volume "md3200lv1" created

#lvcreate -n md3200lv2 -L 8T md3200

Logical volume "md3200lv2" created

三，格式化文件系統

# mkfs.ext4 /dev/md3200/md3200lv1

mke2fs 1.41.12 (17-May-2010)

文件系統標籤=

操做系統:Linux

塊大小=4096 (log=2)

分塊大小=4096 (log=2)

Stride=0 blocks, Stripe width=0 blocks

536870912 inodes, 2147483648 blocks

107374182 blocks (5.00%) reserved for the super user

第一個數據塊=0

Maximum filesystem blocks=4294967296

65536 block groups

32768 blocks per group, 32768 fragments per group

8192 inodes per group

Superblock backups stored on blocks:

32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,

4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,

102400000, 214990848, 512000000, 550731776, 644972544, 1934917632

正在寫入inode表: 完成

Creating journal (32768 blocks): 完成

Writing superblocks and filesystem accounting information: 完成

This filesystem will be automatically checked every 33 mounts or

180 days, whichever comes first. Use tune2fs -c or -i to override.

四，設置開機自動掛載

# mkdir md3200lv1 md3200lv2

# mount /dev/md3200/md3200lv1 /md3200lv1/

# ls /md3200lv1/

lost+found

#tail -n 2 /etc/fstab

/dev/md3200/md3200lv1 /md3200lv1 ext4 defaults 1 2

/dev/md3200/md3200lv2 /md3200lv2 ext4 defaults 1 2

五，重啓驗證

#reboot

# df -hl

文件系統容量已用可用已用%% 掛載點

/dev/mapper/md3200-md3200lv1

7.9T 175M 7.5T 1% /md3200lv1

/dev/mapper/md3200-md3200lv2

7.9T 175M 7.5T 1% /md3200lv2

六，最後順便測試一下存儲的讀寫速度

# dd if=/dev/zero of=./test bs=10M count=1000

記錄了1000+0 的讀入

記錄了1000+0 的寫出

10485760000字節(10 GB)已複製，8.83453 秒，1.2 GB/秒

# free -g

total used free shared buffers cached

Mem: 62 11 51 0 0 9

-/+ buffers/cache: 1 61

Swap: 7 0 7

# dd if=./test of=./test1 bs=10M count=1000

記錄了1000+0 的讀入

記錄了1000+0 的寫出

10485760000字節(10 GB)已複製，12.3038 秒，852 MB/秒

# dd if=./test1 of=./test2 bs=10M count=1000

記錄了1000+0 的讀入

記錄了1000+0 的寫出

10485760000字節(10 GB)已複製，19.0357 秒，551 MB/秒

# dd if=./test2 of=./test3 bs=10M count=1000

記錄了1000+0 的讀入

記錄了1000+0 的寫出

10485760000字節(10 GB)已複製，18.641 秒，563 MB/秒

# free -g

total used free shared buffers cached

Mem: 62 41 21 0 0 39

-/+ buffers/cache: 2 60

Swap: 7 0 7

# dd if=./test3 of=./test4 bs=10M count=1000

記錄了1000+0 的讀入

記錄了1000+0 的寫出

10485760000字節(10 GB)已複製，17.3797 秒，603 MB/秒

# dd if=./test4 of=./test5 bs=10M count=1000

記錄了1000+0 的讀入

記錄了1000+0 的寫出

10485760000字節(10 GB)已複製，22.8714 秒，458 MB/秒

# dd if=./test5 of=./test6 bs=10M count=1000

記錄了1000+0 的讀入

記錄了1000+0 的寫出

10485760000字節(10 GB)已複製，100.246 秒，105 MB/秒

由於內存是64G，故前面測試有緩存，最後105爲實際讀寫速度。

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