The partition ID for Linux LVM is 8e, reported by fdisk.
$ sudo fdisk -l
Disk /dev/sda: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00008ec7
Device Boot Start End Blocks Id System
/dev/sda1 * 1 1013 8136891 8e Linux LVM
/dev/sda2 1014 1044 249007+ 5 Extended
/dev/sda5 1014 1044 248976 83 Linux
LVM is an abstraction layer on top of the storage device to make it easier for you to manage it. I'm not sure what information beyond what fdisk provides you want, because the partition ID for LVM is displayed. However, for additional information about LVM logical volumes, you can use 'lvscan', 'lvs' and 'lvdisplay'.
$ sudo lvscan
ACTIVE '/dev/ops1test/root' [7.35 GB] inherit
ACTIVE '/dev/ops1test/swap_1' [388.00 MB] inherit
$ sudo lvs
LV VG Attr LSize Origin Snap% Move Log Copy% Convert
root ops1test -wi-ao 7.35G
swap_1 ops1test -wi-ao 388.00M
$ sudo lvdisplay
--- Logical volume ---
LV Name /dev/ops1test/root
VG Name ops1test
LV UUID BfKOpy-L7Ql-905o-7tFk-nnsV-0c7I-w4g9y6
LV Write Access read/write
LV Status available
# open 1
LV Size 7.35 GB
Current LE 1881
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:0
--- Logical volume ---
LV Name /dev/ops1test/swap_1
VG Name ops1test
LV UUID 8SNfQ9-Hlfk-Edsb-vmL1-DeE3-nBRR-YAM1dV
LV Write Access read/write
LV Status available
# open 2
LV Size 388.00 MB
Current LE 97
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 252:1
Similarly, you can learn information about the volume group itself with 'vgscan', 'vgs' and 'vgdisplay'.
$ sudo vgscan
Reading all physical volumes. This may take a while...
Found volume group "ops1test" using metadata type lvm2
$ sudo vgs
VG #PV #LV #SN Attr VSize VFree
ops1test 1 2 0 wz--n- 7.76G 32.00M
$ sudo vgdisplay
--- Volume group ---
VG Name ops1test
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 7.76 GB
PE Size 4.00 MB
Total PE 1986
Alloc PE / Size 1978 / 7.73 GB
Free PE / Size 8 / 32.00 MB
VG UUID ofpvks-2EDZ-limu-0wAh-tYUN-ISG3-mSS65O
Best Answer
LVM does not look at the partition table at all - it doesn't even knows it actually exist. So you can set whatever "partition type" value you want there and it won't change anything as far as LVM is concerned.
LVM uses regular expressions in its config file to know what block devices to check for physical volumes, see the
filterkeyword inlvm.conf(5).Some other tools do look at partition types, the linux kernel itself being the first example: