[ Level 2 ] Fix duplicate vg/lv name. 

1. scan vgs:
$ vgscan
2. get vg information:
$ vgdisplay
  --- Volume group ---
  VG Name               vg00
...
  VG UUID               FUoK9F-9mgs-jO4M-vub1-Y7zs-6wpQ-uM2S11
  --- Volume group ---
  VG Name               vg00
...
  VG UUID               FUoK9F-9mgs-jO4M-vub1-Y7zs-6wpQ-uM2S12
3. export vg
$ vgexport
4. rename vg name
$ vgrename FUoK9F-9mgs-jO4M-vub1-Y7zs-6wpQ-uM2S12 vg01
5. import vg
$ vgimport vg01
6. get vg information:
$ vgdisplay
  --- Volume group ---
  VG Name               vg00
...
  VG UUID               FUoK9F-9mgs-jO4M-vub1-Y7zs-6wpQ-uM2S11
  --- Volume group ---
  VG Name               vg01
...
  VG UUID               FUoK9F-9mgs-jO4M-vub1-Y7zs-6wpQ-uM2S12
7. get lv information
$ lvscan
  ACTIVE            '/dev/vg00/lv00' [13.99 GiB] inherit
  inactive            '/dev/vg01/lv00' [13.99 GiB] inherit
8. active vg01
$ vgchange --ignorelockingfailure --noudevsync --sysinit -ay vg01 >/dev/null 2>&1 &&
9. rename lv name(optional) 
$ lvrename vg01 lv00 lv01
10. get lv information
$ lvscan
  ACTIVE            '/dev/vg00/lv00' [13.99 GiB] inherit
  ACTIVE            '/dev/vg01/lv01' [13.99 GiB] inherit
Wish this helps.

regards,
Stanley Huang

Comments

Post a Comment

Popular posts from this blog

[Level 2] Shell Interactive With Zenity Episode 5 -- list

Image
If you want to give a list for user to choose, you can use the option "--list". The command synopsis as below: SYNOPSIS      zenity  --list [--title=title] [--window-icon=path] [--width=width]    [--height=height] [--timeout=seconds] [--column=text] [--checklist]       [--radiolist] [--separator=character] [--multiple] [--editable] [--print-column=number] [--hide-column=number] Just like " --calendar ", if you press "ESC" key or click button "Cancel", the return code will be "1". If you select one option and click "OK", zenity will response the option and return the code will be "0". And also the same effect about the options "--title", "--timeout"...etc, for saving your time, please refer to the previous post " [Level 2] Shell Interactive With Zenity Episode 1 -- calendar ", too. About "--multiple" and "--separator", please refer to tht previous post " [Lev...
Read more

[Level 2] iif in Python

If you want to implement iif in Python, please refer to the following sample code: #!/bin/env python def iif(b): return 'It\'s True' if b else 'It\'s False' print iif(True) print iif(False) And the following sample, guess what will you get! #!/bin/env python b = True print 'b: %s' % 'Ture' if b else 'False' b = False print 'b: %s' % 'Ture' if b else 'False' Result: $ ./iif.py b: Ture False The second result is "False", not "b: False". Why??? Because the prededence of string concatenation is higher than if. Therefore you need to use () to make it correct. #!/bin/env python b = True print 'b: %s' % 'Ture' if b else 'False' b = False print 'b: %s' % ('Ture' if b else 'False') Wish this helps. regards, Stanley Huang
Read more