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GPT分區(qū)擴(kuò)容——以ext4文件系統(tǒng)為例
歡迎來到藍(lán)隊(duì)云技術(shù)小課堂,每天分享一個技術(shù)小知識。今天主要介紹gpt分區(qū)如何擴(kuò)容
擴(kuò)容已有GPT分區(qū)
parted命令主要用于 GPT分區(qū)表的操作
? GPT:GPT 分區(qū)表支持更大的硬盤容量。它使用64位的邏輯塊地址,因此可以支持超過2 TB的硬盤容量
分區(qū)后擴(kuò)容
以ext4文件系統(tǒng)為例
/dev/sdf1有10G。將數(shù)據(jù)盤容量擴(kuò)大至20G,將新增的10G劃分至已有的/dev/sdf1內(nèi)
df -Th
parted /dev/sdf
(parted) print
Error: The backup GPT table is not at the end of the disk, as it should be. This might mean that another operating system believes the
disk is smaller. Fix, by moving the backup to the end (and removing the old backup)?
Fix/Ignore/Cancel? Fix #若界面提示Fix/Ignore/Cancel?和Fix/Ignore?,均輸入Fix即可
Warning: Not all of the space available to /dev/sdf appears to be used, you can fix the GPT to use all of the space (an extra 20971520
blocks) or continue with the current setting?
Fix/Ignore? Fix
Model: VMware Virtual disk (scsi)
Disk /dev/sdf: 21.5GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:
Number Start End Size File system Name Flags
1 1049kB 10.7GB 10.7GB ext4 primary
(parted) rm 1 #刪除1分區(qū)
(parted) mkpart primary 1049kB 100% #原分區(qū)的起始扇區(qū)為1049kB,且要將擴(kuò)容后的總?cè)萘咳糠峙浣o該分區(qū)
(parted) print
Model: VMware Virtual disk (scsi)
Disk /dev/sdf: 21.5GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:
Number Start End Size File system Name Flags
1 1049kB 21.5GB 21.5GB ext4 primary
(parted) quit #退出
Information: You may need to update /etc/fstab.
[root@localhost ~]# resize2fs /dev/sdf1
resize2fs 1.42.9 (28-Dec-2013)
Please run 'e2fsck -f /dev/sdf1' first.
[root@localhost ~]# e2fsck -f /dev/sdf1 #檢測磁盤
e2fsck 1.42.9 (28-Dec-2013)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/sdf1: 11/655360 files (0.0% non-contiguous), 83137/2620928 blocks
[root@localhost ~]# resize2fs /dev/sdf1
resize2fs 1.42.9 (28-Dec-2013)
Resizing the filesystem on /dev/sdf1 to 5242368 (4k) blocks.
The filesystem on /dev/sdf1 is now 5242368 blocks long.
[root@localhost ~]# mount /dev/sdf1 /aaa
[root@localhost ~]# df -Th
Filesystem Type Size Used Avail Use% Mounted on
devtmpfs devtmpfs 1.9G 0 1.9G 0% /dev
tmpfs tmpfs 1.9G 0 1.9G 0% /dev/shm
tmpfs tmpfs 1.9G 20M 1.9G 2% /run
tmpfs tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup
/dev/mapper/centos-root xfs 53G 3.2G 50G 6% /
/dev/sda1 xfs 797M 151M 647M 19% /boot
tmpfs tmpfs 378M 0 378M 0% /run/user/0
/dev/mapper/vgdata-lvdata ext4 689G 69M 658G 1% /data
/dev/sdf1 ext4 20G 44M 19G 1% /aaa
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