Whezzy : swap_1 doesn't contain a valid partition table
 

Hi all
very new to linux but with great skill for google help search.
I setup a full working LAMP server with ispconfig and debian wheezy.

Today i installed on my own server the ntfs-3g + firmware-linux-nonfree.

it's a X3200 M2 with 2 HD x 500 GB + RAID Hardware 1.

This is my trouble. After install ntfs-3g I see there is this error in fdisk -l command:

root@macc:~# fdisk -l

Disk /dev/sda: 500.0 GB, 499999834112 bytes
255 heads, 63 sectors/track, 60788 cylinders, total 976562176 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: 0x0009e1fa

Device Boot Start End Blocks Id System
/dev/sda1 * 2048 499711 248832 83 Linux
/dev/sda2 501758 976560127 488029185 5 Extended
/dev/sda5 501760 976560127 488029184 8e Linux LVM

Disk /dev/mapper/hostxxx--xxx--xxx--xxx-root: 491.2 GB, 491152998400 bytes
255 heads, 63 sectors/track, 59712 cylinders, total 959283200 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/hostxxx--xxx--xxx--xxx-root doesn't contain a valid partition table

Disk /dev/mapper/hostxxx--xxx--xxx--xxx-swap_1: 8585 MB, 8585740288 bytes
255 heads, 63 sectors/track, 1043 cylinders, total 16769024 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/hostxxx--xxx--xxx--xxx-swap_1 doesn't contain a valid partition table


I asked to support to check HD, and they say HW is ok.

Any help to understand error ? All is working well...but..
Thx
Ciao

This is due to the use of LVM, and the message can be ignored. Nothing to do with ntfs-3g.
fdisk expects to be passed a (physical) block device as a parameter - LVM is a software layer that is a block-device "emulator". See the manpage for fdisk, "-l" and see what /proc/partitions offers.
You will often see similar messages if you do "fdisk /dev/sda1" (i.e. use a partition as a paramater rather than device).

Thx a lot for fast reply and explanation.
If may I ask more, I m pretty sure about no error and different way to show info few days ago. LVM can u give me small hint ?

What i mean, is how to fix or how to be sure that raid will work well ?
You will undersand how much newbe I m.
Thx
Umberto

I check about LVM, but I'm not sure about ignore error.
I have 2 disk on server, in raid 1. I think I have problem in mirror.
I try to check server disk status, and with fdisk -l I see always not valid partition.

I try (parted) print ->

Model: LSILOGIC Logical Volume (scsi)
Disk /dev/sda: 500GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number Start End Size Type File system Flags
1 1049kB 256MB 255MB primary ext2 boot
2 257MB 500GB 500GB extended
5 257MB 500GB 500GB logical lvm

There is only ONE disk or what ?
I would like to be sure about raid, and sure it works.
THX