查看fdisklDisk/dev/vda:42.9GB,42949672960bytes,83886080sectorsUnits=sectorsof1*512=512bytesSectorsize(logical/physical):512bytes/512bytesI/Osize(minimum/optimal):512bytes/512BYTESDISK标签类型：DOSDISK标识符：0x000A18D3设备启动启动终端封锁ID系统/dev/vda120488194047409600082LinuxSwap/solaris/solaris/dev/vda2*819404881940488386079378607937846016LIN3/378846016/378383LIN/=sectorsof1*512=512bytesSectorsize(logical/physical):512bytes/512bytesI/Osize(minimum/optimal):512bytes/512bytes分区fdisk/dev/vdbWelcometofdisk(util-linux2.23.2）。更改将只保留在内存中，直到您决定写入它们。使用写入命令之前要小心。设备不包含可识别的分区表构建一个新的DOS磁盘标签，磁盘标识符为0x60f2f992。命令（m寻求帮助）：nPartitiontype:pprimary(0primary,0extended,4free)eextendedSelect(defaultp):pPartitionnumber(1-4,default1):1Firstsector(2048-419430399,default2048):Usingdefaultvalue2048Lastsector,+sectorsor+size{K,M,G}(2048-419430399,default419430399):Usingdefaultvalue419430399Partition1oftypeLinuxandofsize200GiBissetCommand(mforhelp):wqThepartitiontablehasbeenaltered!调用ioctl()重新读取分区表。同步磁盘。格式化mkfs.ext4/dev/vdb1mke2fs1.42.9(28-Dec-2013)文件系统标签=OS类型：LinuxBlocksize=4096(log=2)Fragmentsize=4096(log=2)Stride=0blocks,Stripewidth=0blocks13107200inode,52428544blocks2621427blocks(5.00%)为超级用户保留第一个数据块=0最大文件系统块=21999124481600块组每组32768个块，每组32768个片段每组8192个inode存储在块上的groupSuperblock备份：32768、98304、163840、229376、294912、819200、884736、1605632,2654208,4096000,7962624,11239424,20480000,23887872分配组表：完成写入inode表：完成创建日志（32768个块）：完成写入超级块和文件系统记帐信息：完成添加分区信息echo'/dev/vdb1/optext4defaultsoft400'>>/etc/fstabmountmount-a查看挂载结果df-hFilesystemSizeUsedAvailUse%Mountedon/dev/vda236G1.9G32G6%/devtmpfs16G016G0%/devtmpfs16G016G0%/dev/shmtmpfs16G8.4M16G1%/runtmpfs16G016G0%/sys/fs/cgrouptmpfs3.2G03.2G0%/run/user/0/dev/vdb1197G61M187G1%/opt
