磁盘操作

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查看几块硬盘

Lsblk

cd /mnt

mkdir sda

挂载硬盘mount /dev/sda /mnt/sda

mount -a挂载全部

du -smh *|grep 'G' 查看磁盘占用

df -h

du -h --max-depth=1

[root@tracing047~]# lsblk

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT

sda 8:0 0 931.5G 0 disk

sdb 8:16 0 931.5G 0 disk

sdc 8:32 0 931.5G 0 disk

sdd 8:48 0 931.5G 0 disk

sde 8:64 0 931.5G 0 disk

sdf 8:80 0 931.5G 0 disk

sdg 8:96 0 931.5G 0 disk

sdh 8:112 0 931.5G 0 disk

sdi 8:128 0 447.1G 0 disk

├─sdi1 8:129 0 500M 0 part /boot

└─sdi2 8:130 0 446.7G 0 part

├─vg_tracing047-lv_root (dm-0) 253:0 0 50G 0 lvm /

├─vg_tracing047-lv_swap (dm-1) 253:1 0 4G 0 lvm [SWAP]

└─vg_tracing047-lv_home (dm-2) 253:2 0 392.7G 0 lvm /home

[root@tracing047~]# cd /mnt/

[root@tracing047mnt]# mkdir sda

[root@tracing047mnt]# mount /dev/sda /mnt/sda

[root@tracing047mnt]# mkdir sdb

[root@tracing047mnt]# mkdir sdc

[root@tracing047mnt]# mkdir sdd

[root@tracing047mnt]# mkdir sde

[root@tracing047mnt]# mkdir sdf

[root@tracing047mnt]# mkdir sdg

[root@tracing047mnt]# mkdir sdh

[root@tracing047mnt]# mount /dev/sdb /mnt/sdb

[root@tracing047mnt]# mount /dev/sdc /mnt/sdc

[root@tracing047mnt]# mount /dev/sdd /mnt/sdd

[root@tracing047mnt]# mount /dev/sde /mnt/sde

[root@tracing047mnt]# mount /dev/sdf /mnt/sdf

[root@tracing047mnt]# mount /dev/sdg /mnt/sdg

[root@tracing047mnt]# mount /dev/sdh /mnt/sdh

mount:you must specify the filesystem type

[root@tracing047mnt]# ls

sda sdb sdc sdd sde sdf sdg sdh

[root@tracing047mnt]# mkfs.ext4 /dev/sdh

mke2fs1.41.12 (17-May-2010)

/dev/sdhis entire device, not just one partition!

Proceedanyway? (y,n) y

Filesystemlabel=

OS type:Linux

Blocksize=4096 (log=2)

Fragmentsize=4096 (log=2)

Stride=0blocks, Stripe width=0 blocks

61054976inodes, 244190646 blocks

12209532blocks (5.00%) reserved for the super user

Firstdata block=0

Maximumfilesystem blocks=4294967296

7453block groups

32768blocks per group, 32768 fragments per group

8192inodes per group

Superblockbackups stored on blocks:

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

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

102400000, 214990848

Writinginode tables: done

Creatingjournal (32768 blocks): done

Writingsuperblocks and filesystem accounting information: done

Thisfilesystem will be automatically checked every 23 mounts or

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

[root@tracing024~/impala-tpcds-kit]#df -h

Filesystem Size Used Avail Use% Mounted on

/dev/mapper/vg_tracing024-lv_root

50G 26G 22G 54% /

tmpfs 63G 72K 63G 1% /dev/shm

/dev/sda1 485M 38M 423M 9% /boot

/dev/mapper/vg_tracing024-lv_home

314G 112G 186G 38% /home

/dev/sdb1 688G 77G 577G 12% /srv/node/sdb1

/dev/sdc1 688G 6.1G 647G 1% /srv/node/sdc1

/dev/sdd1 688G 6.1G 647G 1% /srv/node/sdd1

/dev/sde1 688G 6.2G 647G 1% /srv/node/sde1

/dev/sdf1 688G 7.0G 646G 2% /srv/node/sdf1

/dev/sdg1 688G 7.8G 646G 2% /srv/node/sdg1

/dev/sdh1 688G 8.4G 645G 2% /srv/node/sdh1

/dev/sdi1 688G 8.0G 645G 2% /srv/node/sdi1

cm_processes 63G 14M 63G 1% /var/run/cloudera-scm-agent/process

[root@tracing024~/impala-tpcds-kit]#

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