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贝壳云小钢炮root分区扩容
小钢炮刷机后,root分区仅700多M,但是硬件是8G,我就感觉奇怪了,剩下的哪去了呢.首先尝试创建新分区,发现有不连续的两段.分区为p2,p3. 自动挂载太麻烦, docker又在root分区,所以尝试扩容
[root@beikeyun:/]# lsblk
root@beikeyun:/]# fdisk -l
Disk /dev/ram0: 4 MiB, 4194304 bytes, 8192 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk /dev/mmcblk0: 7.3 GiB, 7818182656 bytes, 15269888 sectors
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: dos
Disk identifier: 0x00000000
Device Boot Start End Sectors Size Id Type
/dev/mmcblk0p1 32768 1671167 1638400 800M 83 Linux
/dev/mmcblk0p2 2048 32767 30720 15M 83 Linux
/dev/mmcblk0p3 1671168 15269887 13598720 6.5G 83 Linux
Partition table entries are not in disk order.
[root@beikeyun:/]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
mmcblk0 179:0 0 7.3G 0 disk
├─mmcblk0p1 179:1 0 800M 0 part /
├─mmcblk0p2 179:2 0 15M 0 part
└─mmcblk0p3 179:3 0 6.5G 0 part
mmcblk0boot0 179:32 0 4M 1 disk
mmcblk0boot1 179:64 0 4M 1 disk
mmcblk0rpmb 179:96 0 512K 0 disk
fdisk删除p3,p1,并重建p1
[root@beikeyun:/]# fdisk /dev/mmcblk0
Welcome to fdisk (util-linux 2.32.1).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command
Command (m for help): d
Partition number (1-3, default 3): //删除3
Partition 3 has been deleted.
Command (m for help): d
Partition number (1,2, default 2): 1 //删除1
Partition 1 has been deleted.
Command (m for help): n //重新建1
Partition type
p primary (1 primary, 0 extended, 3 free)
e extended (container for logical partitions)
Select (default p):
Using default response p.
Partition number (1,3,4, default 1): //分配号
First sector (32768-15269887, default 32768): //默认起始位置
Last sector, +sectors or +size{K,M,G,T,P} (32768-15269887, default 15269887):
Created a new partition 1 of type 'Linux' and of size 7.3 GiB.
Partition #1 contains a ext4 signature.
Do you want to remove the signature? [Y]es/[N]o: N //p1上有数据,原分区为ext4,保持数据
Command (m for help): w
The partition table has been altered.
Syncing disks.
继续查看分区
[root@beikeyun:/]# df
Filesystem Size Used Available Use% Mounted on
/dev/mmcblk0p1 771.4M 716.6M 0 100% /
devtmpfs 490.3M 0 490.3M 0% /dev
tmpfs 492.7M 0 492.7M 0% /dev/shm
tmpfs 492.7M 3.1M 489.7M 1% /tmp
tmpfs 492.7M 100.0K 492.6M 0% /run
tmpfs 492.7M 0 492.7M 0% /media
cgroup 492.7M 0 492.7M 0% /sys/fs/cgroup
/dev/mmcblk0p1 771.4M 716.6M 0 100% /var/lib/docker
p1似乎还没有扩容,但是使用lsblk查看分区大小
[root@beikeyun:/]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
mmcblk0 179:0 0 7.3G 0 disk
├─mmcblk0p1 179:1 0 7.3G 0 part /
└─mmcblk0p2 179:2 0 15M 0 part
mmcblk0boot0 179:32 0 4M 1 disk
mmcblk0boot1 179:64 0 4M 1 disk
mmcblk0rpmb 179:96 0 512K 0 disk
[root@beikeyun:~]# partprobe /dev/mmcblk0
[root@beikeyun:~]# resize2fs /dev/mmcblk0p1 //resize2fs 针对ext2,ext3,ext4 文件格式
resize2fs 1.44.2 (14-May-2018)
Filesystem at /dev/mmcblk0p1 is mounted on /; on-line resizing required
old_desc_blocks = 1, new_desc_blocks = 1
The filesystem on /dev/mmcblk0p1 is now 1904640 (4k) blocks long.
最后再用df查看
[root@beikeyun:~]# df
Filesystem Size Used Available Use% Mounted on
/dev/mmcblk0p1 7.1G 717.6M 6.1G 10% /
devtmpfs 490.3M 0 490.3M 0% /dev
tmpfs 492.7M 0 492.7M 0% /dev/shm
tmpfs 492.7M 3.0M 489.7M 1% /tmp
tmpfs 492.7M 100.0K 492.6M 0% /run
tmpfs 492.7M 0 492.7M 0% /media
cgroup 492.7M 0 492.7M 0% /sys/fs/cgroup
/dev/mmcblk0p1 7.1G 717.6M 6.1G 10% /var/lib/docker
嗯.完美扩容.