Linux disk partitioning, formatting, directory mounts

1. Display the current host directory

Commanddf -h

 [[email protected] ~]# df-hfilesystem Size used Avail use% mounted on/dev/mapper/volgroup-lv_root 26g 2.9G 22g 13%/tmpfs 1.9g 0  1.9g 0%/dev/shm/dev/xvda1 485< Span class= "Hljs-keyword" >m 32m  428m 7%/boot        

2. Disk partition 2.1 shows the current disk of the machine:

Commandfdisk -l

[[email protected] ~]# fdisk -l /dev/xvdb Disk /dev/xvdb: 53.7 GB, 53687091200 bytes255 heads, 63 sectors/track, 6527 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x00000000

Note: It is known here that the new disk is/dev/xvdb, and it is directly specified, reducing the length of the display.

2.2 FDISK partition/DEV/XVDB:

fdisk /dev/xvdbAccording to the Help Tips section, this is to divide/dev/xvdb into a zone.

[Email protected] ~]# Fdisk/dev/xvdbdevice contains neither a valid DOS partition table, nor Sun, SGI or OSF Disklabelbu Ilding a new DOS disklabel with disk identifier 0x0adfd119. Changes'll remain in memory only, until the decide to write them. After that, of course, the previous content won ' t is recoverable. Warning:invalid flag 0x0000 of partition Table 4 would be a corrected by W (rite) warning:dos-compatible mode is deprecated. It ' s strongly recommended to switch off the mode (command ' C ') andChange display unitsTo Sectors (command' U '). Command (MForHelp):McommandAction A toggle a bootable flag B edit BSD DisklabelC Toggle the DOSCompatibility flagDDelete aPartitionLList knownPartition typesM Print this menuNAdd aNewPartition OCreate aNewEmpty DOSPartitionTableP Print thePartitionTable Q quitWithout saving changes SCreate aNewEmpty Sun DisklabelTchange a partition ' s system ID u Change Display/entry units v Verify the partition Table W write table to disk and exit X extra functionality (experts only ) Command (M for help): Ncommand action E Extended P primary partition (1-4) ppartition number (1-4): 1First Cylinder (1-652 7, default 1): Using default value 1Last cylinder, +cylinders or +size{k,m,g} (1-6527, default 6527): Using default value 6527Command (M for help): pdisk/dev/xvdb:53.7 GB, 53687091200 bytes255 heads, sectors/track, 6527 cylindersunits = cy Linders of 16065 * 8225280 = bytessector size (logical/physical): bytes/512 bytesi/o size (minimum/optimal): 512 bytes/512 bytesdisk identifier:0x0adfd119 Device Boot Start End Blocks Id system/dev/xvdb1 1 6527 52428096-linuxcom Mand (M for help): Wthe partition table have been altered! Calling IOCTL () to re-read partition table. Syncing disks.   

3. Disk formatting

mkfs.ext4 /dev/xvdb1the command partition is a EXT4 file system format.

[Email protected] ~]# MKFS.EXT4/DEV/XVDB1 MKE2FS1.41.12 (17-may-2010) Filesystem Label=osTypeLinuxblock size=4096 (log=2) Fragment size=4096 (log=2) stride=0 blocks, Stripe width=0 Blocks3276800 Inodes,13107024 blocks655351 Blocks (5.00%) reservedFor the Super Userfirst data block=0Maximum filesystem blocks=4294967296Block groups32768 blocks per group,32768 fragments per group8192 inodes per groupsuperblock backups stored on blocks:32768,98304,163840,229376,294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424Writing inode Tables: Done Creating Journal (32768 blocks): donewriting superblocks and filesystem accounting Informa tion: donethis filesystem'll be automatically checked every -mounts orin days, whichever comes fi Rst. Use tune2fs-c or-i to override.            

4. Mount Directory 4.1 manual mount

New Catalog/u01mkdir -p /u01
Mount device to directory/u01mount /dev/xvdb1 /u01

[[email protected] ~]# mkdir -p /u01[[email protected] ~]# mount /dev/xvdb1 /u01

4.2 Boot Auto Mount

/etc/fstabto modify the configuration file, add a line at the end:

/dev/xvdb1              /u01                    ext4    defaults        0 0

Displays the current directory, successfully mounting the/U01 directory:

[Email protected] ~]# Df-hfilesystem Size used AvailUse% MountedOn/dev/mapper/volgroup-lv_root26G 2.9g  13%/tmpfs 1.9g 0 1.9G 0%/dev/shm/dev/xvda1 485M +m 428m 7%/boot/dev/xvdb1 G- m- g 1%/u01  

Reference article: http://www.cnblogs.com/jyzhao/p/4778657.html

Linux disk partitioning, formatting, directory mounts