给虚拟机添加硬盘(或扩容)

  1. 停止虚拟机
  2. 在管理页面给虚拟机新增一块硬盘
  3. 重新启动虚拟机

登入虚拟机，对新增硬盘进行分区

下方所示为硬盘扩容非新增，但操作方式都一致

  1. root@zentao:/home/ubuntu# fdisk /dev/sda
  3. Welcome to fdisk (util-linux 2.27.1).
  4. Changes will remain in memory only, until you decide to write them.
  5. Be careful before using the write command.
  7. The size of this disk is 4 TiB (4398046511104 bytes). DOS partition table format can not be used on drives for volumes larger than 2199023255040 bytes for 512-byte sectors. Use GUID partition table format (GPT).
  10. Command (m for help): p  ###查看已有分区
  12. Disk /dev/sda: 4 TiB, 4398046511104 bytes, 8589934592 sectors
  13. Units: sectors of 1 * 512 = 512 bytes
  14. Sector size (logical/physical): 512 bytes / 512 bytes
  15. I/O size (minimum/optimal): 512 bytes / 512 bytes
  16. Disklabel type: dos
  17. Disk identifier: 0x039343bf
  19. Device     Boot   Start       End   Sectors   Size Id Type
  20. /dev/sda1  *       2048   1499135   1497088   731M 83 Linux
  21. /dev/sda2       1501182 419428351 417927170 199.3G  5 Extended
  22. /dev/sda5       1501184 419428351 417927168 199.3G 8e Linux LVM
  24. Command (m for help): F   ###查看可分配空间
  25. Unpartitioned space /dev/sda: 3.8 TiB, 4183299194880 bytes, 8170506240 sectors
  26. Units: sectors of 1 * 512 = 512 bytes
  27. Sector size (logical/physical): 512 bytes / 512 bytes
  29. Start        End    Sectors  Size
  30. 419428352 8589934591 8170506240  3.8T
  32. Command (m for help): n   ###创建分区
  33. Partition type
  34. p   primary (1 primary, 1 extended, 2 free)
  35. l   logical (numbered from 5)
  36. Select (default p): p        
  37. Partition number (3,4, default 3): 
  38. First sector (1499136-4294967295, default 1499136): 419428352
  39. Last sector, +sectors or +size{K,M,G,T,P} (419428352-4294967294, default 4294967294):            
  41. Created a new partition 3 of type 'Linux' and of size 1.8 TiB.
  43. Command (m for help): p
  44. Disk /dev/sda: 4 TiB, 4398046511104 bytes, 8589934592 sectors
  45. Units: sectors of 1 * 512 = 512 bytes
  46. Sector size (logical/physical): 512 bytes / 512 bytes
  47. I/O size (minimum/optimal): 512 bytes / 512 bytes
  48. Disklabel type: dos
  49. Disk identifier: 0x039343bf
  51. Device     Boot     Start        End    Sectors   Size Id Type
  52. /dev/sda1  *         2048    1499135    1497088   731M 83 Linux
  53. /dev/sda2         1501182  419428351  417927170 199.3G  5 Extended
  54. /dev/sda3       419428352 4294967294 3875538943   1.8T 83 Linux
  55. /dev/sda5         1501184  419428351  417927168 199.3G 8e Linux LVM
  57. Partition table entries are not in disk order.
  59. Command (m for help): t   ###修改分区type
  60. Partition number (1-3,5, default 5): 3    ###指定要修改的分区
  61. Partition type (type L to list all types): 8e   ###8e对应的type为Linux LVM
  63. Changed type of partition 'Linux' to 'Linux LVM'.
  65. Command (m for help): w   ###写入分区表
  66. The partition table has been altered

扩容根目录

  1. 查看VG Name
  1. root@zentao:/home/ubuntu# vgdisplay 
  2. --- Volume group ---
  3. VG Name               zentao-vg
  4. System ID             
  5. Format                lvm2
  6. Metadata Areas        3
  7. Metadata Sequence No  7
  8. VG Access             read/write
  9. VG Status             resizable
  10. MAX LV                0
  11. Cur LV                2
  12. Open LV               2
  13. Max PV                0
  14. Cur PV                3
  15. Act PV                3
  16. VG Size               4.00 TiB
  17. PE Size               4.00 MiB
  18. Total PE              1048390
  19. Alloc PE / Size       1048390 / 4.00 TiB
  20. Free  PE / Size       0 / 0   
  21.   VG UUID               8l2jBN-VnmO-TphJ-RqBA-rnda-ROoW-QE4pQ5
  1. 查看目录挂载信息
  1. root@zentao:/home/ubuntu# df -h
  2. Filesystem                   Size  Used Avail Use% Mounted on
  3. udev                         3.9G     0  3.9G   0% /dev
  4. tmpfs                        799M  9.1M  790M   2% /run
  5. /dev/mapper/zentao--vg-root  2.2T   26G  2.1T   2% /
  6. tmpfs                        3.9G     0  3.9G   0% /dev/shm
  7. tmpfs                        5.0M     0  5.0M   0% /run/lock
  8. tmpfs                        3.9G     0  3.9G   0% /sys/fs/cgroup
  9. /dev/sda1                    720M   58M  625M   9% /boot
  10. overlay                      2.2T   26G  2.1T   2% /var/lib/docker/overlay2/6bc943202e08c87727eda74a4f454f62a10103e59f53be5e049ce1ee0d1298ce/merged
  11. overlay                      2.2T   26G  2.1T   2% /var/lib/docker/overlay2/ed8c8d79e65da008e4fad92b40e9eba5632216832f941df1d1a933ca9753e36f/merged
  12. overlay                      2.2T   26G  2.1T   2% /var/lib/docker/overlay2/5a36352524032e25eca0a973fbab10ca20b333f06ee871a34648fca264b97ea9/merged
  13. tmpfs                        799M     0  799M   0% /run/user/1000
  1. 分别执行以下命令对根目录进行扩容
  1. mkfs.ext4 /dev/sda3
  3. pvcreate /dev/sda3
  5. vgextend zentao-bg /dev/sda3
  7. ###直接将所有空余空间扩容，或者也可以指定扩容大小
  8. lvextend -l +100%FREE /dev/mapper/zentao--vg-root  
  10. resize2fs /dev/mapper/zentao--vg-root
  1. 查看扩容后的根目录大小
  1. root@zentao:/home/ubuntu# df -h
  2. Filesystem                   Size  Used Avail Use% Mounted on
  3. udev                         3.9G     0  3.9G   0% /dev
  4. tmpfs                        799M  9.1M  790M   2% /run
  5. /dev/mapper/zentao--vg-root  4.0T   26G  3.8T   1% /
  6. tmpfs                        3.9G     0  3.9G   0% /dev/shm
  7. tmpfs                        5.0M     0  5.0M   0% /run/lock
  8. tmpfs                        3.9G     0  3.9G   0% /sys/fs/cgroup
  9. /dev/sda1                    720M   58M  625M   9% /boot
  10. overlay                      4.0T   26G  3.8T   1% /var/lib/docker/overlay2/ed8c8d79e65da008e4fad92b40e9eba5632216832f941df1d1a933ca9753e36f/merged
  11. overlay                      4.0T   26G  3.8T   1% /var/lib/docker/overlay2/6bc943202e08c87727eda74a4f454f62a10103e59f53be5e049ce1ee0d1298ce/merged
  12. overlay                      4.0T   26G  3.8T   1% /var/lib/docker/overlay2/5a36352524032e25eca0a973fbab10ca20b333f06ee871a34648fca264b97ea9/merged
  13. tmpfs                        799M     0  799M   0% /run/user/1000
  14. root@zentao:/home/ubuntu#
  15. root@zentao:/home/ubuntu# lsblk
  16. NAME                  MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
  17. sda                     8:0    0     4T  0 disk 
  18. ├─sda1                  8:1    0   731M  0 part /boot
  19. ├─sda3                  8:3    0   1.8T  0 part 
  20. │ └─zentao--vg-root   252:0    0     4T  0 lvm  /
  21. └─sda5                  8:5    0 199.3G  0 part 
  22. ├─zentao--vg-root   252:0    0     4T  0 lvm  /
  23. └─zentao--vg-swap_1 252:1    0   980M  0 lvm  [SWAP]
  24. sdb                     8:16   0     2T  0 disk 
  25. └─sdb1                  8:17   0     2T  0 part 
  26. └─zentao--vg-root   252:0    0     4T  0 lvm  /
  27. sr0                    11:0    1   873M  0 rom