[Operation and maintenance] Linux hard disk space is insufficient, expand the hard disk, mount the directory, and mount it permanently

1. Allocate disk
   

2. View hard drive mount

   fdisk -l
   root@desktop:/home/user1# fdisk -l
   Disk /dev/vda: 30 GiB, 32212254720 bytes, 62914560 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: 0x4f6e894a
   
   Device     Boot    Start      End  Sectors  Size Id Type
   /dev/vda1  *        2048 37750783 37748736   18G 83 Linux
   /dev/vda2       37750784 37752829     2046 1023K 83 Linux
   /dev/vda3       37752830 41940991  4188162    2G  5 Extended
   /dev/vda5       37752832 41940991  4188160    2G 82 Linux swap / Solaris
   
   
   Disk /dev/vdb: 1 GiB, 1073741824 bytes, 2097152 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
   
   
   Disk /dev/sda: 50 GiB, 53687091200 bytes, 104857600 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
   
   

3. Try to mount /dev/sda to /home_expand

   If errors are reported, view the current device being mounted file system type df -h -T,
   and then format the / dev / sda
   if the other hard drive is ext3, use the mkfs.ext3 /dev/sdaformat
   if the other hard drive is ext4, use the mkfs.ext4 /dev/sdaformat
   to mount again, mount /dev/sda /home_expand
   this time as a temporary mount.

4. Change to mount a long-term, you need to vim /etc/fstabfile added to the end

   /dev/sda /home_expand ext4 defaults 1 2

Click to jump: If you don’t understand the content of fstab, be sure to look at the detailed fstab content

6. At this point, the mounting is complete, you can tryreboot