Virtual-Machines
可用空間不足：需要 X 個擴展區，但只有 Y 個可用
我正在嘗試在 Vmware Workstation 12 Pro CentOS VM 中擴展 LVM。以下是我正在遵循的步驟以及我停止的地方，因為不知道如何從那裡開始：
fdisk使用命令創建主分區- 使用以下方法獲取分區表資訊
fdisk -l：# fdisk -l Disk /dev/sda: 85.9 GB, 85899345920 bytes 255 heads, 63 sectors/track, 10443 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0001d929 Device Boot Start End Blocks Id System /dev/sda1 * 1 64 512000 83 Linux Partition 1 does not end on cylinder boundary. /dev/sda2 64 5222 41430016 8e Linux LVM /dev/sda3 5222 10443 41940357+ 8e Linux LVM Disk /dev/mapper/vg_webserver-lv_root: 38.3 GB, 38277218304 bytes 255 heads, 63 sectors/track, 4653 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/mapper/vg_webserver-lv_swap: 4143 MB, 4143972352 bytes 255 heads, 63 sectors/track, 503 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000
- 將分區轉換為物理卷：
# pvcreate /dev/sda3 Physical volume "/dev/sda3" successfully created
- 獲取要擴展的捲的名稱：
# vgdisplay --- Volume group --- VG Name vg_webserver System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 3 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 2 Max PV 0 Cur PV 1 Act PV 1 VG Size 39.51 GiB PE Size 4.00 MiB Total PE 10114 Alloc PE / Size 10114 / 39.51 GiB Free PE / Size 0 / 0 VG UUID qo4qm0-yTZc-TVzt-Ys0t-Ap2j-sH4X-rtMqPS
- 擴展物理卷：
# vgextend vg_webserver /dev/sda3 Volume group "vg_webserver" successfully extended
- 獲得可用的“免費”空間：
# vgextend vg_webserver /dev/sda3 Volume group "vg_webserver" successfully extended
- 獲取邏輯卷的資訊：
# lvdisplay --- Logical volume --- LV Path /dev/vg_webserver/lv_root LV Name lv_root VG Name vg_webserver LV UUID ayl9Ae-Y7nk-CVXG-c0G1-P4vx-wdlD-hEmXSO LV Write Access read/write LV Creation host, time webserver.localhost, 2015-10-27 12:48:48 -0400 LV Status available # open 1 LV Size 35.65 GiB Current LE 9126 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:0 --- Logical volume --- LV Path /dev/vg_webserver/lv_swap LV Name lv_swap VG Name vg_webserver LV UUID vwXfta-tGr0-kQFI-B2vF-L4gT-skE5-yb5qXA LV Write Access read/write LV Creation host, time webserver.localhost, 2015-10-27 12:48:52 -0400 LV Status available # open 1 LV Size 3.86 GiB Current LE 988 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:1
- 擴展邏輯卷：
# lvextend -L+40G /dev/vg_webserver/lv_root Insufficient free space: 10240 extents needed, but only 10239 available我得到了上面的錯誤，我不知道從那裡去哪里以及如何解決這個問題，有什麼可以幫助我的嗎？我做錯了什麼，我正在執行的問題背後的邏輯解釋是什麼？
注意：我已閱讀此內容，但我不確定如何撤消我已經做出的所有更改，以及此資訊是否是要遵循的路徑
更新
這裡要求的是以下命令的輸出：
# pvdisplay --- Physical volume --- PV Name /dev/sda2 VG Name vg_webserver PV Size 39.51 GiB / not usable 3.00 MiB Allocatable yes (but full) PE Size 4.00 MiB Total PE 10114 Free PE 0 Allocated PE 10114 PV UUID mwFIHY-mwwJ-b3uk-PkbP-7JXp-Vp2t-foCZtt --- Physical volume --- PV Name /dev/sda3 VG Name vg_webserver PV Size 40.00 GiB / not usable 1.38 MiB Allocatable yes (but full) PE Size 4.00 MiB Total PE 10239 Free PE 0 Allocated PE 10239 PV UUID tWg4Oj-ZknB-mefb-Ggy9-V8Cu-C7S2-OvO5aU # vgdisplay --- Volume group --- VG Name vg_webserver System ID Format lvm2 Metadata Areas 2 Metadata Sequence No 5 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 2 Max PV 0 Cur PV 2 Act PV 2 VG Size 79.50 GiB PE Size 4.00 MiB Total PE 20353 Alloc PE / Size 20353 / 79.50 GiB Free PE / Size 0 / 0 VG UUID qo4qm0-yTZc-TVzt-Ys0t-Ap2j-sH4X-rtMqPS # lvdisplay --- Logical volume --- LV Path /dev/vg_webserver/lv_root LV Name lv_root VG Name vg_webserver LV UUID ayl9Ae-Y7nk-CVXG-c0G1-P4vx-wdlD-hEmXSO LV Write Access read/write LV Creation host, time webserver.localhost, 2015-10-27 12:48:48 -0400 LV Status available # open 1 LV Size 75.64 GiB Current LE 19365 Segments 2 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:0 --- Logical volume --- LV Path /dev/vg_webserver/lv_swap LV Name lv_swap VG Name vg_webserver LV UUID vwXfta-tGr0-kQFI-B2vF-L4gT-skE5-yb5qXA LV Write Access read/write LV Creation host, time webserver.localhost, 2015-10-27 12:48:52 -0400 LV Status available # open 1 LV Size 3.86 GiB Current LE 988 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:1
我認為工作中的一些四捨五入會導致你
lvextend失敗。試試這個：
lvextend /dev/vg_webserver/lv_root -l+100%FREE上述命令將要求系統將所有可用空間分配給選定的邏輯卷，而不要求特定大小。
您可以執行獲取所有可用空間：
lvextend /dev/vg_webserver/lv_root -l+100%FREE之後您需要執行： 如果是 xfs：
xfs_growfs <partition>對於 ext4：resize2fs <partition>