Linux hard disk mounting and linux hard disk mounting

Linux hard disk mounting and linux hard disk mounting

The space-time between virtual machines was reduced, so 5 GB space was added. After a long time, I hung up. Sort out your notes and make them ready for use.

 

 

1.Add disk to view disk status

[Root @ db1/] # fdisk-l

Disk/dev/sda: 10.7 GB, 10737418240 bytes

255 heads, 63 sectors/track, 1305 cylinders

Units = cylinders of 16065*512 = 8225280 bytes

Device Boot Start End Blocks Id System

/Dev/sda1*151 1305 9277537 + 83 Linux

/Dev/sda2 1 150 1204843 + 82 Linux swap

Partition table entries are not in disk order

Disk/dev/sdb: 5368 MB, 5368709120 bytes

255 heads, 63 sectors/track, 652 cylinders

Units = cylinders of 16065*512 = 8225280 bytes

Device Boot Start End Blocks Id System

 

The query results show that A/dev/sdb disk is added.

 

2.Use fdiskPartition/dev/sdb

 

[Root @ db1/] # fdisk/dev/sdb

Command (m for help): n

Command action

E extended

P primary partition (1-4)

P

Partition number (1-4): 1

First cylinder (1-652, default 1 ):

Using default value 1

Last cylinder or + size or + sizeM or + sizeK (1-652, default 652 ):

Using default value 652

 

Command (m for help): w

The partition table has been altered!

 

Calling ioctl () to re-read partition table.

Syncing disks.

 

Check the partition again and add a/dev/sdb1 partition. This 1 is previously specified. If we specify 2, it will become sdb2.

 

[Root @ db1/] # fdisk-l

 

Disk/dev/sda: 10.7 GB, 10737418240 bytes

255 heads, 63 sectors/track, 1305 cylinders

Units = cylinders of 16065*512 = 8225280 bytes

Device Boot Start End Blocks Id System

/Dev/sda1*151 1305 9277537 + 83 Linux

/Dev/sda2 1 150 1204843 + 82 Linux swap

Partition table entries are not in disk order

 

Disk/dev/sdb: 5368 MB, 5368709120 bytes

255 heads, 63 sectors/track, 652 cylinders

Units = cylinders of 16065*512 = 8225280 bytes

 

Device Boot Start End Blocks Id System

/Dev/sdb1 1 652 5237158 + 83 Linux

[Root @ db1/] #

 

If the corresponding partition cannot be found in/proc/partitions after creation, use the parprobe command to refresh it:

[Root @ web1 ~] # Cat/proc/partitions
Major minor # blocks name


8, 0, 175825944, sda
8 1 1020096 sda1
8 2 30716280 sda2
8, 3, 8193150, sda3
[Root @ web1 ~] # Partprobe/dev/sda
[Root @ web1 ~] # Cat/proc/partitions
Major minor # blocks name


8, 0, 175825944, sda
8 1 1020096 sda1
8 2 30716280 sda2
8, 3, 8193150, sda3
8 4 135893835 sda4
[Root @ web1 ~] #

 

3.Format/dev/sdb1Partition

 

[Root @ db1/] # mkfs-t ext3/dev/sdb1

Mke2fs 1.35 (28-Feb-2004)

Filesystem label =

OS type: Linux

Block size = 4096 (log = 2)

Fragment size = 4096 (log = 2)

655360 inodes, 1309289 blocks

65464 blocks (5.00%) reserved for the super user

First data block = 0

Maximum filesystem blocks = 1342177280

40 block groups

32768 blocks per group, 32768 fragments per group

16384 inodes per group

Superblock backups stored on blocks:

32768,983 04, 163840,229 376, 294912,819 200, 884736

 

Writing inode tables: done

Creating journal (8192 blocks): done

Writing superblocks and filesystem accounting information: done

 

This filesystem will be automatically checked every 30 mounts or

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

 

4.Create a directory and set/dev/sdb1Hanging in this directory

 

[Root @ db1/] # ls

Backup dev initrd media opt sbin sys usr

Bin etc lib misc proc selinux tftpboot var

Boot home lost + found mnt root srv tmp

[Root @ db1/] # mkdir/u01

[Root @ db1/] # ls

Backup dev initrd media opt sbin sys u01

Bin etc lib misc proc selinux tftpboot usr

Boot home lost + found mnt root srv tmp var

[Root @ db1/] # mount/dev/sdb1/u01

 

5. verify whether the mounting is successful

[Root @ db1/] # df-k

Filesystem 1K-blocks Used Available Use % Mounted on

/Dev/sda1 9131772 7066884 1601012 82%/

None 454256 0 454256 0%/dev/shm

/Dev/sdb1 5154852 43040 4849956 1%/backup

 

6.Set automatic mounting upon startup

 

[Root @ db1/] # vi/etc/fstab

# This file is edited by fstab-sync-see 'man fstab-sync' for details

LABEL = // ext3 defaults 1 1

None/dev/pts devpts gid = 5, mode = 620 0 0

None/dev/shm tmpfs defaults 0 0

None/proc defaults 0 0

None/sys sysfs defaults 0 0

LABEL = SWAP-sda2 swap defaults 0 0

/Dev/sdb1/u01 ext3 defaults 0 0

/Dev/hdc/media/cdrom auto pamconsole, exec, noauto, m

Anaged 0 0

/Dev/fd0/media/floppy auto pamconsole, exec, noauto, m

Anaged 0 0