aliyun主机挂载硬盘

1、fdisk -l Disk /dev/xvda: 21.5 GB, 21474836480 bytes255 heads, 63 sectors/track, 2610 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x00073f45     Device Boot      Start         End      Blocks   Id  System/dev/xvda1   *           1        2611    20970496   83  Linux Disk /dev/xvdb: 214.7 GB, 214748364800 bytes255 heads, 63 sectors/track, 26108 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x00000000 2、fdisk -S 56 /dev/xvdb Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabelBuilding a new DOS disklabel with disk identifier 0xffcb1daf.Changes will remain in memory only, until you decide to write them.After that, of course, the previous content won't be recoverable. Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite) WARNING: DOS-compatible mode is deprecated. It's strongly recommended to         switch off the mode (command 'c') and change display units to         sectors (command 'u'). Command (m for help): nCommand action   e   extended   p   primary partition (1-4)pPartition number (1-4): 1First cylinder (1-29371, default 1): Using default value 1Last cylinder, +cylinders or +size{K,M,G} (1-29371, default 29371): Using default value 29371 Command (m for help): wqThe partition table has been altered! Calling ioctl() to re-read partition table.Syncing disks.  3、mkfs.ext4 /dev/xvdb1 mke2fs 1.41.12 (17-May-2010)Filesystem label=OS type: LinuxBlock size=4096 (log=2)Fragment size=4096 (log=2)Stride=0 blocks, Stripe width=0 blocks13107200 inodes, 52427228 blocks2621361 blocks (5.00%) reserved for the super userFirst data block=0Maximum filesystem blocks=42949672961600 block 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, 11239424, 20480000, 23887872 Writing inode tables: done                            Creating journal (32768 blocks): doneWriting superblocks and filesystem accounting information: done This filesystem will be automatically checked every 35 mounts or180 days, whichever comes first.  Use tune2fs -c or -i to override. 4、 echo '/dev/xvdb1  /data ext4    defaults    0  0' >> /etc/fstabmkdir /datamount -a

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