How do I recover disk space after lvremove without lvreduce

[ralph barber]

I very carelessly did an lvremove without doing an lvreduce on a logical volume and now I can't get the disk space that was allocated to the volume back. Is there a simple way of getting this back else I have to start all over again as I need that space

[Bernhard Mueller]

Hi,

did you want to remove the logical volume? then you do not need to lvreduce, and you should have all disk space available, vgdisplay should tell you so.

Or did you *not* want to remove the logical volume but only reduce the size or mirroring of an lvol?

Regards,
Bernhard

[Robert-Jan Goossens]

Ralph,

Could you give us the commands you have used ?

Kind regards,
Robert-Jan

[ralph barber]

the command I used was
lvremove -f /dev/vg01/u03
this logical volume was 12754 extents
However when I run vgdisplay on vg01 it shows only 2331 extents free, the same as before I removed the volume ?

[Marco Santerre]

The reason it may not have freed up the extents is that maybe the file system was still being in used and/or mounted. The other thing too is that usually it will give you a confirmation message regarding whether you really want to remove the LV, so maybe the LV was not removed after all. In you VG, do you still see your LV in the list?

[Robert-Jan Goossens]

run bdf to check Marco's answer

[Bernhard Mueller]

Hi folks,

if you use -f you are not asked for confirmation, however, if the lvol has a mounted filesystem or the raw volume is in use you lvreduce will give an appropriate error message an *not* remove the lvol.

So in fact, pls run
ll /dev/vg01 an post the result

then run lvdisplay /dev/vg01/u3 and post the result

Regards,
Bernhard

[Massimo Bianchi]

Could you post a

vgdisplay -v vg01

If space is not released, then it must be allocated to some lvol... let's find to which cXtYdZ disks belonged that lvol, and then issue a

pvdisplay -v /dev/rdsk/cXtYdZ | more

The result should show wheter the lvol still allocates the PE or not...
Massimo

[ralph barber]

I had unmounted the filesystem before removing the volume and vgdisplay did not show removed volume, also not in /dev/vg01 when I do an ll. When I do a pvdisplay I get the following on a lot of the extents which I guess must be my missing diskspace
26739 current ??? 08326
26740 current ??? 08327
26741 current ??? 08328
26742 current ??? 08329
26743 current ??? 08330

[Bernhard Mueller · Accepted solution]

Ralph,

check this thread

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=279029

Regards,
Bernhard