Strange device /dev/dm-0 and /dev/dm-1 /dev/dm-2

draguz

Active Member
Dec 18, 2008
49
1
28
Hi, what is the /dev/dm-0 device ??

these is my configuration:

srvproxmox1:/# pveversion --verbose
pve-manager: 1.5-8 (pve-manager/1.5/4674)
running kernel: 2.6.18-2-pve
proxmox-ve-2.6.18: 1.5-5
pve-kernel-2.6.18-2-pve: 2.6.18-5
qemu-server: 1.1-11
pve-firmware: 1.0-3
libpve-storage-perl: 1.0-10
vncterm: 0.9-2
vzctl: 3.0.23-1pve8
vzdump: 1.2-5
vzprocps: 2.0.11-1dso2
vzquota: 3.0.11-1
pve-qemu-kvm-2.6.18: 0.9.1-5


srvproxmox1:/# fdisk -l

Disk /dev/sda: 146.6 GB, 146685296640 bytes
255 heads, 63 sectors/track, 17833 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000

Device Boot Start End Blocks Id System
/dev/sda1 * 1 66 524288 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 66 17833 142719252 8e Linux LVM

Disk /dev/sdb: 293.3 GB, 293381079040 bytes
255 heads, 63 sectors/track, 35668 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x4cdf5762

Device Boot Start End Blocks Id System

Disk /dev/dm-0: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000

Disk /dev/dm-0 doesn't contain a valid partition table

Disk /dev/dm-1: 36.5 GB, 36507222016 bytes
255 heads, 63 sectors/track, 4438 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000

Disk /dev/dm-1 doesn't contain a valid partition table

Disk /dev/dm-2: 96.7 GB, 96758398976 bytes
255 heads, 63 sectors/track, 11763 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000

Disk /dev/dm-2 doesn't contain a valid partition table

srvproxmox1:/# lsscsi
[6:0:0:0] disk Sun proxmox1 V1.0 /dev/sda
[6:0:1:0] disk Sun raid5 V1.0 /dev/sdb
[6:1:0:0] disk HITACHI H103014SCSUN146G A160 -
[6:1:1:0] disk SEAGATE ST914603SSUN146G 0868 -
[6:1:2:0] disk SEAGATE ST914603SSUN146G 0868 -
[6:1:3:0] disk SEAGATE ST914603SSUN146G 0868 -
[6:1:4:0] disk SEAGATE ST914603SSUN146G 0868 -
[6:3:0:0] enclosu ADAPTEC Virtual SGPIO 0 0001 -
[6:3:1:0] enclosu ADAPTEC Virtual SGPIO 1 0001 -
[7:0:0:0] cd/dvd TSSTcorp CD/DVDW TS-T632A SR03 /dev/sr0

thank you very much.
 

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