centos系统分区扩容
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首先扩容硬盘
[root@ecs_784 ~]# fdisk /dev/sda The device presents a logical sector size that is smaller than the physical sector size. Aligning to a physical sector (or optimal I/O) size boundary is recommended, or performance may be impacted. 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): First sector (83886080-209715199, default 83886080): Using default value 83886080 Last sector, +sectors or +size{K,M,G} (83886080-209715199, default 209715199): Using default value 209715199 Partition 3 of type Linux and of size 60 GiB is set Command (m for help): t Partition number (1-3, default 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.
然后重启服务器
[root@ecs_784 ~]# mkfs -t ext3 /dev/sda3 mke2fs 1.42.9 (28-Dec-2013) Discarding device blocks: done Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 3932160 inodes, 15728640 blocks 786432 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=4294967296 480 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 Allocating group tables: done Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done [root@ecs_784 ~]# [root@ecs_784 ~]# pvcreate /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. [root@ecs_784 ~]# pvdisplay --- Physical volume --- PV Name /dev/sda2 VG Name centos PV Size 39.51 GiB / not usable 3.00 MiB Allocatable yes PE Size 4.00 MiB Total PE 10114 Free PE 11 Allocated PE 10103 PV UUID nWpySs-yBbw-BN7g-u1G7-xvU1-KAc2-q1Vfx5 "/dev/sda3" is a new physical volume of "60.00 GiB" --- NEW Physical volume --- PV Name /dev/sda3 VG Name PV Size 60.00 GiB Allocatable NO PE Size 0 Total PE 0 Free PE 0 Allocated PE 0 PV UUID WOOOXV-ugpD-hc0z-ugiF-tJFK-Ptbn-ozAnLG [root@ecs_784 ~]# vgextend centos /dev/sda3 Volume group "centos" successfully extended [root@ecs_784 ~]# lvextend -L +60G /dev/mapper/centos-root
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