root@ubuntu-server:~# pvdisplay
root@ubuntu-server:~# vgdisplay
No volume groups found
root@ubuntu-server:~# lvdisplay
No volume groups found
root@ubuntu-server:~#
该怎么办?我在 Google 或其他地方找不到解决方案?
我尝试:
pvcreate /dev/sdb5
Device /dev/sdb5 not found (or ignored by filtering).
这是我的 fdisk:
fdisk -l
Disk /dev/sdb: 250.1 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488397168 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 identifier: 0x00050ccb
Device Boot Start End Blocks Id System
/dev/sdb1 * 2048 499711 248832 83 Linux
/dev/sdb2 501758 488396799 243947521 5 Extended
/dev/sdb5 501760 488396799 243947520 8e Linux LVM
Disk /dev/sda: 250.1 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488397168 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 identifier: 0x00050ccb
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 499711 248832 fd Linux raid autodetect
/dev/sda2 501758 488396799 243947521 5 Extended
/dev/sda5 501760 488396799 243947520 fd Linux raid autodetect
Disk /dev/mapper/ubuntu--server-root: 247.7 GB, 247652679680 bytes
255 heads, 63 sectors/track, 30108 cylinders, total 483696640 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 identifier: 0x00000000
Disk /dev/mapper/ubuntu--server-root doesn't contain a valid partition table
Disk /dev/mapper/ubuntu--server-swap_1: 2143 MB, 2143289344 bytes
255 heads, 63 sectors/track, 260 cylinders, total 4186112 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 identifier: 0x00000000
Disk /dev/mapper/ubuntu--server-swap_1 doesn't contain a valid partition table
和我的 df -h
df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/ubuntu--server-root 231G 5,0G 214G 3% /
udev 993M 12K 993M 1% /dev
tmpfs 401M 356K 401M 1% /run
none 5,0M 0 5,0M 0% /run/lock
none 1002M 0 1002M 0% /run/shm
/dev/sdb1 228M 25M 192M 12% /boot
答案1
新用户经常会因为逻辑卷未显示而感到困惑,即使已正确设置。如果您遇到这种情况,您是否尝试过以下操作?
pvscan
这将扫描物理卷。它应该会显示/dev/sdb5
您是否之前将其设为 LVM 物理卷。
vgscan
查找现有卷组。如果您之前已正确设置卷组,则应该会显示该卷组。
vgchange -a y
激活所有可用卷组(将其“活动”状态更改为“是”)。现在您的逻辑卷应该显示在/dev/mapper/
和 中/dev/VGNAME/LVNAME
。
答案2
缓存守护进程lvmetad
是最近引入的,有时会破坏 LVM 的隐式扫描。
pvscan --cache
应该强制 LVM 重新扫描。
答案3
您必须使用以下方式创建卷
vgcreate "name" /dev/sdb5