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Old 10-18-2011, 10:03 AM   #1
jcottonesr
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Registered: Jul 2011
Posts: 21

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ran fdisk on new drive from fileserver and got message if I reboot will my boot fail


Disk /dev/sda: 145.4 GB, 145492017152 bytes
255 heads, 63 sectors/track, 17688 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sda1 1 10 80293+ de Dell Utility
/dev/sda2 11 663 5245222+ 8e Linux LVM
/dev/sda3 * 664 688 200812+ 83 Linux
/dev/sda4 689 17688 136552500 5 Extended
/dev/sda5 689 17688 136552468+ 8e Linux LVM

Disk /dev/sdc: 268.4 GB, 268435456000 bytes
255 heads, 63 sectors/track, 32635 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Disk /dev/sdc doesn't contain a valid partition table
[root@cspdv-dlblade-13 ~]# fdisk /dev/sdc
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel. Changes will remain in memory only,
until you decide to write them. After that, of course, the previous
content won't be recoverable.


The number of cylinders for this disk is set to 32635.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
(e.g., DOS FDISK, OS/2 FDISK)
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)


this is what df -k shows
[root@cspdv-dlblade-13 ~]# df -k
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
4062912 686044 3167156 18% /
/dev/mapper/VolGroup00-LogVol05
4062912 141196 3712004 4% /home
/dev/mapper/VolGroup00-LogVol04
6094400 4311540 1468288 75% /var
/dev/mapper/VolGroup00-LogVol03
4062912 139428 3713772 4% /tmp
/dev/mapper/VolGroup00-LogVol02
8125880 2231596 5474856 29% /usr
/dev/sda3 194449 30144 154265 17% /boot
tmpfs 8219148 0 8219148 0% /dev/shm

[root@cspdv-dlblade-13 etc]# lvscan
ACTIVE '/dev/VolGroup00/LogVol00' [4.00 GB] inherit
ACTIVE '/dev/VolGroup00/LogVol05' [4.00 GB] inherit
ACTIVE '/dev/VolGroup00/LogVol04' [6.00 GB] inherit
ACTIVE '/dev/VolGroup00/LogVol03' [4.00 GB] inherit
ACTIVE '/dev/VolGroup00/LogVol02' [8.00 GB] inherit
ACTIVE '/dev/VolGroup00/LogVol01' [17.62 GB] inherit
[root@cspdv-dlblade-13 etc]# pvscan
PV /dev/sda5 VG VolGroup00 lvm2 [130.22 GB / 86.59 GB free]
PV /dev/sda2 VG VolGroup00 lvm2 [5.00 GB / 5.00 GB free]
Total: 2 [135.22 GB] / in use: 2 [135.22 GB] / in no VG: 0 [0 ]

Last edited by jcottonesr; 10-18-2011 at 10:09 AM.
 
Old 10-18-2011, 10:52 AM   #2
TobiSGD
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Where does it say that your reboot will fail?
 
Old 10-18-2011, 01:30 PM   #3
jcottonesr
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Registered: Jul 2011
Posts: 21

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Well it doesn't But a am worried the whatever was not recoverable could be system stuff. The message said here was data there and I am not sure why. I dont want to try and reboot if data will be gone. how can I tell what it was talking about?
 
Old 10-18-2011, 01:33 PM   #4
jcottonesr
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Registered: Jul 2011
Posts: 21

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this is what concerns me
[root@cspdv-dlblade-13 ~]# fdisk /dev/sdc
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel. Changes will remain in memory only,
until you decide to write them. After that, of course, the previous
content won't be recoverable.
 
Old 10-18-2011, 02:00 PM   #5
themande
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Location: Pune, India
Distribution: CentOS6
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I don't think that it will cause any boot issues or data loss.

Your /dev/sdc disk is not partioned. This is general message which I can see on unpartioned disks.
 
Old 10-18-2011, 02:38 PM   #6
TobiSGD
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Even if there should be a partition table it should be easy to recover that using testdisk.
 
Old 10-18-2011, 03:50 PM   #7
jcottonesr
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Registered: Jul 2011
Posts: 21

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ah but when i do pvcreate

[root@cspdv-dlblade-13 ~]# fdisk -l

Disk /dev/sda: 145.4 GB, 145492017152 bytes
255 heads, 63 sectors/track, 17688 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sda1 1 10 80293+ de Dell Utility
/dev/sda2 11 663 5245222+ 8e Linux LVM
/dev/sda3 * 664 688 200812+ 83 Linux
/dev/sda4 689 17688 136552500 5 Extended
/dev/sda5 689 17688 136552468+ 8e Linux LVM

Disk /dev/sdc: 268.4 GB, 268435456000 bytes
255 heads, 63 sectors/track, 32635 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sdc1 1 30395 244147806 8e Linux LVM
[root@cspdv-dlblade-13 ~]# pvcreate /dev/sdc
Device /dev/sdc not found (or ignored by filtering).
 
Old 10-18-2011, 05:36 PM   #8
themande
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Registered: Jun 2011
Location: Pune, India
Distribution: CentOS6
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You have created /dev/sdc1 partion on disk /dev/sdc.

To create physical volume run command
Code:
pvcreate /dev/sdc1
 
  


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