Ubuntu
無法使用 LVM 或 resize2fs 將 oVirt VM 磁碟擴展到新大小
我有一個帶有 VM 的 oVirt 伺服器，該 VM 是使用 20GB 磁碟創建的，但很快就用完了空間，所以我又增加了 20GB，現在我正在嘗試擴展磁碟。
我以前在舊虛擬機上做過一次，然後我執行了以下命令：
$ sudo lvm lvm> lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv Size of logical volume ubuntu-vg/ubuntu-lv changed from 4.00 GiB (1024 extents) to <49.00 GiB (12543 extents). Logical volume ubuntu-vg/ubuntu-lv successfully resized. lvm> exit Exiting. $ sudo lvm lvm> lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv Size of logical volume ubuntu-vg/ubuntu-lv changed from 4.00 GiB (1024 extents) to <49.00 GiB (12543 extents). Logical volume ubuntu-vg/ubuntu-lv successfully resized. lvm> exit Exiting. $ sudo resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv resize2fs 1.45.5 (07-Jan-2020) Filesystem at /dev/mapper/ubuntu--vg-ubuntu--lv is mounted on /; on-line resizing required old_desc_blocks = 1, new_desc_blocks = 7 The filesystem on /dev/mapper/ubuntu--vg-ubuntu--lv is now 12844032 (4k) blocks long. $ df -h Filesystem Size Used Avail Use% Mounted on udev 949M 0 949M 0% /dev tmpfs 199M 1.2M 198M 1% /run /dev/mapper/ubuntu--vg-ubuntu--lv 49G 3.8G 43G 9% / tmpfs 993M 0 993M 0% /dev/shm tmpfs 5.0M 0 5.0M 0% /run/lock tmpfs 993M 0 993M 0% /sys/fs/cgroup /dev/sda2 976M 107M 803M 12% /boot /dev/loop0 28M 28M 0 100% /snap/snapd/7264 /dev/loop1 55M 55M 0 100% /snap/core18/1705 /dev/loop2 69M 69M 0 100% /snap/lxd/14804 /dev/loop3 33M 33M 0 100% /snap/snapd/12159 /dev/loop4 56M 56M 0 100% /snap/core18/2074 /dev/loop5 62M 62M 0 100% /snap/core20/1026 /dev/loop6 67M 67M 0 100% /snap/lxd/20840 tmpfs 199M 0 199M 0% /run/user/1000這擴展了磁碟，但現在由於某種原因在我的新 VM 上這些命令不起作用，我得到以下輸出：
$ sudo lvm lvm> lvextend -l +100%FREE /dev/mapper/ubuntu--vg-ubuntu--lv New size (4863 extents) matches existing size (4863 extents). lvm> $ sudo resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv resize2fs 1.45.5 (07-Jan-2020) The filesystem is already 4979712 (4k) blocks long. Nothing to do!調查
fdisk -l我有以下內容：Disk /dev/loop0: 54.97 MiB, 57614336 bytes, 112528 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/loop1: 55.45 MiB, 58134528 bytes, 113544 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/loop2: 61.79 MiB, 64770048 bytes, 126504 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/loop3: 68.26 MiB, 71573504 bytes, 139792 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/loop4: 68.17 MiB, 71475200 bytes, 139600 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/loop5: 27.9 MiB, 28405760 bytes, 55480 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/loop6: 32.3 MiB, 33865728 bytes, 66144 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: 40 GiB, 42949672960 bytes, 83886080 sectors Disk model: QEMU HARDDISK 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: EFA99D35-85DD-4D0D-A4DE-19514BF6AE89 Device Start End Sectors Size Type /dev/sda1 2048 4095 2048 1M BIOS boot /dev/sda2 4096 2101247 2097152 1G Linux filesystem /dev/sda3 2101248 41940991 39839744 19G Linux filesystem Disk /dev/mapper/ubuntu--vg-ubuntu--lv: 18.102 GiB, 20396900352 bytes, 39837696 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
您還沒有擴展磁碟分區。這是第一步，出於某種原因，您正試圖跳過它（以及另一個強制性步驟）。
Device Start End Sectors Size Type /dev/sda3 2101248 41940991 39839744 19G Linux filesystem使用該工具安全地
growpart擴展分區。請記住，它將塊設備和分區號作為單獨的參數。sudo growpart /dev/sda 3如果您還沒有安裝它，請安裝它。
完成後，您可以繼續調整 PV 的大小，然後調整 LV。
sudo pvresize /dev/sda3 ... the rest of what you were trying to do.