ubuntu server添加新硬盘
公司ubuntu server服务器因业务数据量上升,df下磁盘，使用量达97%
root@xinju:/home/xinju# fdisk -l Disk /dev/sda: 107.4 GB, 107374182400 bytes 255 heads, 63 sectors/track, 13054 cylinders, total 209715200 sectors Units = 扇区 of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00022eb9 设备 启动 起点 终点 块数 Id 系统 /dev/sda1 * 2048 39063551 19530752 83 Linux /dev/sda2 39065598 208594943 84764673 5 扩展 /dev/sda5 39065600 196093951 78514176 83 Linux /dev/sda6 196096000 208594943 6249472 82 Linux 交换 / Solaris root@xinju:/home/xinju# poweroff xinju@xinju:~$ df 文件系统 1K-块 已用 可用 已用% 挂载点 /dev/sda1 19222656 7296252 10949868 40% / udev 3047540 4 3047536 1% /dev tmpfs 1222724 232 1222492 1% /run none 5120 0 5120 0% /run/lock none 3056800 0 3056800 0% /run/shm /dev/sda5 77277876 73350980 1188 100% /home xinju@xinju:~$ ls
准备把磁盘扩容下。
1，vsphere给虚拟机添加100G新硬盘;
2, 查看硬盘情况，获取新硬盘逻辑分区名是/dev/sdb,
sudo lshw -C disk sudo fdisk /dev/sdb Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel Building a new DOS disklabel with disk identifier 0xee55da6f. 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) 命令(输入 m 获取帮助)： m 命令操作 a toggle a bootable flag b edit bsd disklabel c toggle the dos compatibility flag d delete a partition l list known partition types m print this menu n add a new partition o create a new empty DOS partition table p print the partition table q quit without saving changes s create a new empty Sun disklabel t change 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)
3,输入n,添加一个新分分区;输入e,作为扩展分区[extend],选择完后，会出现原始界面，继续选择n，然后就可以选择把之前分好的Extend Partion 分区成Logical Partion.这样的分区才可以格式化使用。分完后，通过菜单选择P, 可以print the partition table.看看我们是否分区的合理。然后，选择w保存就可以了。
4,格式化分区
root@xinju:/home/xinju# mkfs -t ext4 /dev/sdb mke2fs 1.42 (29-Nov-2011) /dev/sdb is entire device, not just one partition! 无论如何也要继续? (y,n) y 文件系统标签= OS type: Linux 块大小=4096 (log=2) 分块大小=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 6553600 inodes, 26214400 blocks 1310720 blocks (5.00%) reserved for the super user 第一个数据块=0 Maximum filesystem blocks=4294967296 800 block groups 32768 blocks per group, 32768 fragments per group 8192 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424, 20480000, 23887872 Allocating group tables: 完成 正在写入inode表: 完成 Creating journal (32768 blocks): 完成 Writing superblocks and filesystem accounting information: 完成
5，home目录添加新目录，供新磁盘挂载，
root@xinju:/home# mkdir mount root@xinju:/home# mount /dev/sdb /home/mount
结束。后续注意新的挂载目录权限分配。