Should I be concerned about "Disk /dev/dm-# doesn't contain a valid partition table"?

Andy Huang

Renowned Member
Jan 1, 2013
32
1
73
Whenever I do fdisk -l, I get that message on the host node. Here are the outputs; I've bolded the things I'm not sure about:
Code:
root@hostnode:/var/lib/vz/images# fdisk -l

Disk /dev/sda: 584.7 GB, 584652423168 bytes
255 heads, 63 sectors/track, 71079 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: 0x0008d83b


   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          66      523264   83  Linux
[b]Partition 1 does not end on cylinder boundary.[/b]
/dev/sda2              66       71079   570417779+  8e  Linux LVM


Disk /dev/dm-0: 34.4 GB, 34359738368 bytes
255 heads, 63 sectors/track, 4177 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


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


Disk /dev/dm-1: 34.4 GB, 34359738368 bytes
255 heads, 63 sectors/track, 4177 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


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


Disk /dev/dm-2: 515.4 GB, 515383492608 bytes
255 heads, 63 sectors/track, 62658 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


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

I've got these since day 1, and I've seen the same messages in some other people's posts on here. Should I be concerned about those messages, and if so, are there resources I can read which can help me fix those?
 
Re: Should I be concerned about "Disk /dev/dm-# doesn't contain a valid partition tab

this looks ok, nothing to worry.
 
Re: Should I be concerned about "Disk /dev/dm-# doesn't contain a valid partition tab

Awesome! Thanks :)
 

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