[root@dev-caigou ~]# fdisk /dev/sda sda sda1 sda2 [root@dev-caigou ~]# fdisk /dev/sda Welcome to fdisk (util-linux 2.23.2). Changes will remain in memory only, until you decide to write them. Be careful before using the write command. Command (m for help): n Partition type: p primary (2 primary, 0 extended, 2 free) e extended Select (default p): p Partition number (3,4, default 3): 3 First sector (41943040-125829119, default 41943040): Using default value 41943040 Last sector, +sectors or +size{K,M,G} (41943040-125829119, default 125829119): Using default value 125829119 Partition 3 of type Linux and of size 40 GiB is set Command (m for help): t Partition number (1-3, default 3): 3 Hex code (type L to list all codes): 8e Changed type of partition 'Linux' to 'Linux LVM' Command (m for help): w The partition table has been altered! Calling ioctl() to re-read partition table. WARNING: Re-reading the partition table failed with error 16: Device or resource busy. The kernel still uses the old table. The new table will be used at the next reboot or after you run partprobe(8) or kpartx(8) Syncing disks. [root@dev-caigou ~]# partprobe [root@dev-caigou ~]# mkfs -t ext3 /dev/sda3 mke2fs 1.42.9 (28-Dec-2013) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 2621440 inodes, 10485760 blocks 524288 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=4294967296 320 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 Allocating group tables: done Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done [root@dev-caigou ~]# vgextend centos /dev/sda3 WARNING: ext3 signature detected on /dev/sda3 at offset 1080. Wipe it? [y/n]: y Wiping ext3 signature on /dev/sda3. Physical volume "/dev/sda3" successfully created. Volume group "centos" successfully extended [root@dev-caigou ~]# lvextend -L 56G /dev/centos/root Size of logical volume centos/root changed from 55.00 GiB (14080 extents) to 56.00 GiB (14336 extents). Logical volume centos/root successfully resized. [root@dev-caigou ~]# resize2fs /dev/centos/root resize2fs 1.42.9 (28-Dec-2013) resize2fs: Bad magic number in super-block while trying to open /dev/centos/root Couldn't find valid filesystem superblock. [root@dev-caigou ~]# xfs_ xfs_admin xfs_copy xfs_estimate xfs_fsr xfs_info xfs_logprint xfs_metadump xfs_ncheck xfs_repair xfs_bmap xfs_db xfs_freeze xfs_growfs xfs_io xfs_mdrestore xfs_mkfile xfs_quota xfs_rtcp [root@dev-caigou ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/centos-root 56G 3.3G 53G 6% / devtmpfs 1.9G 0 1.9G 0% /dev tmpfs 1.9G 0 1.9G 0% /dev/shm tmpfs 1.9G 8.5M 1.9G 1% /run tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup /dev/sda1 1014M 189M 826M 19% /boot tmpfs 380M 0 380M 0% /run/user/1000
centos7中 最后重设大小原使用命令由 centos6中的 resize2fs 改为xfs_growfs 即可
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