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Old 07-15-2010, 07:05 AM   #1
hartajdugal
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Registered: Jul 2010
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vgdisplay -v -D results in invalid option -D in rhel 5.5(tikanga)


Hi,
Any idea when the -D option was withdrawn ? I could not find much information on this . Also, what exactly is the difference between vgdisplay -v -D and just vgdisplay -v .
Thanks,
Hartaj Singh .
 
Old 07-15-2010, 07:17 AM   #2
alli_yas
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Hi Hartaj,

Not sure exactly when it was withdrawn. But testing with/without the -D on an old RHEL 4 machine of mine; there seems to be no difference:

Code:
# vgdisplay VolGroup00
  --- Volume group ---
  VG Name               VolGroup00
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  10
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                5
  Open LV               5
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               279.25 GB
  PE Size               32.00 MB
  Total PE              8936
  Alloc PE / Size       8936 / 279.25 GB
  Free  PE / Size       0 / 0   
  VG UUID               bATTIh-TNs0-2H66-zQWb-16ow-SD4H-RuJmDW
   
# vgdisplay -D VolGroup00
  --- Volume group ---
  VG Name               VolGroup00
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  10
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                5
  Open LV               5
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               279.25 GB
  PE Size               32.00 MB
  Total PE              8936
  Alloc PE / Size       8936 / 279.25 GB
  Free  PE / Size       0 / 0   
  VG UUID               bATTIh-TNs0-2H66-zQWb-16ow-SD4H-RuJmDW
 
Old 07-15-2010, 11:40 AM   #3
trickykid
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When in doubt, refer to the man pages. The only D option is -d for debug in RHEL 5.5.
 
Old 07-16-2010, 01:02 AM   #4
hartajdugal
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Thanks guys..
I did check the man page . In fact there is some difference between the -D and -d options . I found this somewhere :

-d, --debug
Enables additional debugging output (if compiled with DEBUG).

-D, --disk
Show attributes from the volume group descriptor area on disk(s). Without this switch they are shown from the kernel. Useful if the volume group isn't activated.

Hence my confusion . Any idea about this ?
 
Old 07-16-2010, 01:11 AM   #5
vikas027
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Quote:
Originally Posted by hartajdugal View Post
Thanks guys..
I did check the man page . In fact there is some difference between the -D and -d options . I found this somewhere :

-d, --debug
Enables additional debugging output (if compiled with DEBUG).

-D, --disk
Show attributes from the volume group descriptor area on disk(s). Without this switch they are shown from the kernel. Useful if the volume group isn't activated.

Hence my confusion . Any idea about this ?
There is no -D option in RHEL/CentOS. I think -D option would be in some other flavor of Linux or Unix.
Certainly NOT in RHEL/CentOS/Fedora.


The only options available are:-
Code:
       vgdisplay    [-A|--activevolumegroups]    [-c|--colon]    [-d|--debug]
       [-h|--help]   [--ignorelockingfailure]   [-P|--partial]   [-s|--short]
       [-v[v]|--verbose [--verbose]] [--version] [VolumeGroupName...]
 
Old 07-16-2010, 09:34 AM   #6
alli_yas
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Distribution: Fedora 14, RHEL 5.5, CentOS 5.5, Ubuntu 10.04
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Quote:
There is no -D option in RHEL/CentOS. I think -D option would be in some other flavor of Linux or Unix.
Certainly NOT in RHEL/CentOS/Fedora.
Yes and No - definitely RHEL/CentOS 5 don't have a -D option. However it seems RHEL 4 did have the -D option - I have tested on an old RHEL 4 machine of mine.
 
Old 07-16-2010, 11:57 AM   #7
trickykid
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Quote:
Originally Posted by hartajdugal View Post
Thanks guys..
I did check the man page . In fact there is some difference between the -D and -d options . I found this somewhere :

-d, --debug
Enables additional debugging output (if compiled with DEBUG).

-D, --disk
Show attributes from the volume group descriptor area on disk(s). Without this switch they are shown from the kernel. Useful if the volume group isn't activated.

Hence my confusion . Any idea about this ?
Which man page you looking at? The default man page on the RHEL 5.5 machine I looked at lacked the -D option in it.
 
  


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