ubuntu 12.04 server 挂载硬盘
买的虚拟机添加硬盘需要手动挂载，下面列下简单步骤，作为记录：
1、查看下当前文件系统
[root@VM_28_226_centos~]#df
Filesystem1K-blocksUsedAvailableUse%Mountedon
/dev/vda182542401099340673560815%/
只有一个/dev/vda1挂在了根下边，也就是系统软件装在这里
2、查看下当前硬盘情况
[root@VM_28_226_centos~]#fdisk-l
Disk/dev/vda:8589MB,8589901824bytes
255heads,63sectors/track,1044cylinders
Units=cylindersof16065*512=8225280bytes
Sectorsize(logical/physical):512bytes/512bytes
I/Osize(minimum/optimal):512bytes/512bytes
Diskidentifier:0xcd6e8236
DeviceBootStartEndBlocksIdSystem
/dev/vda1*110448385898+83Linux
Disk/dev/vdb:268.4GB,268435456000bytes
16heads,63sectors/track,520126cylinders
Units=cylindersof1008*512=516096bytes
Sectorsize(logical/physical):512bytes/512bytes
I/Osize(minimum/optimal):512bytes/512bytes
Diskidentifier:0x00000000
Disk/dev/vdbdoesn'tcontainavalidpartitiontable
Disk/dev/vdc:2147MB,2147483648bytes
16heads,63sectors/track,4161cylinders
Units=cylindersof1008*512=516096bytes
Sectorsize(logical/physical):512bytes/512bytes
I/Osize(minimum/optimal):512bytes/512bytes
Diskidentifier:0x00000000
Disk/dev/vdcdoesn'tcontainavalidpartitiontable
看到一个盘，/dev/vdb，270G。现在格式化下。
3、格式化
[root@VM_28_226_centos~]#mkfs-text4/dev/vdb
mke2fs1.41.12(17-May-2010)
Filesystemlabel=
OStype:Linux
Blocksize=4096(log=2)
Fragmentsize=4096(log=2)
Stride=0blocks,Stripewidth=0blocks
16384000inodes,65536000blocks
3276800blocks(5.00%)reservedforthesuperuser
Firstdatablock=0
Maximumfilesystemblocks=4294967296
2000blockgroups
32768blockspergroup,32768fragmentspergroup
8192inodespergroup
Superblockbackupsstoredonblocks:
32768,98304,163840,229376,294912,819200,884736,1605632,2654208,
4096000,7962624,11239424,20480000,23887872
Writinginodetables:done
Creatingjournal(32768blocks):done
Writingsuperblocksandfilesystemaccountinginformation:done
Thisfilesystemwillbeautomaticallycheckedevery25mountsor
180days,whichevercomesfirst.Usetune2fs-cor-itooverride.
-t是指分区类型这里用ext4
4、把磁盘挂载到/edx
mount/dev/vdb/edx
[root@VM_28_226_centos~]#df
Filesystem1K-blocksUsedAvailableUse%Mountedon
/dev/vda182542401099384673556415%/
/dev/vdb2580309801917082447320721%/edx
5、设置开机自动挂载
vim/etc/fstab
添加一条
/dev/vdb/edxext4noatime,acl,user_xattr10
(fstab的文件格式，以后记录)