fdisk扩展分区
root@cmp:/home/cmp/Downloads# fdisk /dev/sda
Welcome to fdisk (util-linux 2.34).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Command (m for help): p
Disk /dev/sda: 100 GiB, 107374182400 bytes, 209715200 sectors
Disk model: VMware Virtual S
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 3EDB8DA1-4B24-4EB9-B3E6-60F47A913588
Device Start End Sectors Size Type
/dev/sda1 2048 4095 2048 1M BIOS boot
/dev/sda2 4096 104855551 104851456 50G Linux filesystem
/dev/sda3 104855552 209715166 104859615 50G Linux filesystem
Command (m for help): d
Partition number (1-3, default 3):
Partition 3 has been deleted.
Command (m for help): p
Disk /dev/sda: 100 GiB, 107374182400 bytes, 209715200 sectors
Disk model: VMware Virtual S
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 3EDB8DA1-4B24-4EB9-B3E6-60F47A913588
Device Start End Sectors Size Type
/dev/sda1 2048 4095 2048 1M BIOS boot
/dev/sda2 4096 104855551 104851456 50G Linux filesystem
Command (m for help): d
Partition number (1,2, default 2):
Partition 2 has been deleted.
Command (m for help): p
Disk /dev/sda: 100 GiB, 107374182400 bytes, 209715200 sectors
Disk model: VMware Virtual S
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 3EDB8DA1-4B24-4EB9-B3E6-60F47A913588
Device Start End Sectors Size Type
/dev/sda1 2048 4095 2048 1M BIOS boot
Command (m for help): n
Partition number (2-128, default 2):
First sector (4096-209715166, default 4096):
Last sector, +/-sectors or +/-size{K,M,G,T,P} (4096-209715166, default 209715166):
Created a new partition 2 of type 'Linux filesystem' and of size 100 GiB.
Partition #2 contains a ext4 signature.
Do you want to remove the signature? [Y]es/[N]o: Y
The signature will be removed by a write command.
Command (m for help): p
Disk /dev/sda: 100 GiB, 107374182400 bytes, 209715200 sectors
Disk model: VMware Virtual S
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 3EDB8DA1-4B24-4EB9-B3E6-60F47A913588
Device Start End Sectors Size Type
/dev/sda1 2048 4095 2048 1M BIOS boot
/dev/sda2 4096 209715166 209711071 100G Linux filesystem
Filesystem/RAID signature on partition 2 will be wiped.
Command (m for help): w
The partition table has been altered.
Syncing disks.
resize2fs更新分区
root@cmp:/home/cmp/Downloads# resize2fs /dev/sda2
resize2fs 1.45.5 (07-Jan-2020)
Filesystem at /dev/sda2 is mounted on /; on-line resizing required
old_desc_blocks = 7, new_desc_blocks = 13
The filesystem on /dev/sda2 is now 26213883 (4k) blocks long.
root@cmp:/home/cmp/Downloads# df -h
Filesystem Size Used Avail Use% Mounted on
udev 1.9G 0 1.9G 0% /dev
tmpfs 391M 1.7M 389M 1% /run
/dev/sda2 99G 46G 49G 49% /
tmpfs 2.0G 16K 2.0G 1% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 2.0G 0 2.0G 0% /sys/fs/cgroup
/dev/loop1 62M 62M 0 100% /snap/core20/1405
/dev/loop2 62M 62M 0 100% /snap/core20/1376
/dev/loop0 56M 56M 0 100% /snap/core18/2344
/dev/loop3 68M 68M 0 100% /snap/lxd/21835
/dev/loop4 45M 45M 0 100% /snap/snapd/15534
/dev/loop5 44M 44M 0 100% /snap/snapd/15177
/dev/loop6 68M 68M 0 100% /snap/lxd/22753
tmpfs 391M 0 391M 0% /run/user/1000
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