vgscan

[Daniel Caçador]

Hi!

Look this message after I execute the vgscan -v:

vgscan: couldn't access the list of physical volumes for volume group "/dev/vg00".

The volume group /dev/vg00/group was not matched any Physical volumes complete.

Thank's!!!

[Fabio Ettore]

Hi Daniel,

can you post the output of

ll /dev/vg00/group

Does vgdisplay on vg00 get error messages as well?
Have you backupped /etc/lvmtab before to launch vgscan?

Regards,
Fabio

[Peter Godron · Accepted solution]

Daniel,
why did run the vgscan command? First paragraph of man vgscan says to "in the event of a catastrophic error".

Have you got a backup of your /etc/lvmtab.
Seems the system thinks you have a vg00 without actual physical disks!

Did you have a diskcrash?

[Sivakumar TS]

Hi,

what is the content of lvmtab now?

Try to mv the /etc/lvmtab and run vgscan

Regards,

Siva.

[Daniel Caçador]

Hi!!

This is the shoot of vgscan.

Thank's

[Daniel Caçador]

This is the shot of ls /dev/vg00/group

Thank's!

[Daniel Caçador]

This is the shot of ls /dev/vg00/group

Thank's!

[Prashant Zanwar_4]

Do check for /dev/lvmconf/vg00.conf and if some older files and also decide on which disks should be in vg00.
Make sure those are the disks which should belong to VG00.. And then take other steps..

Prashant

[Daniel Caçador]

Yes, have the files, how the others steps?

[Prashant Zanwar_4]

You can list the disks which were in use like following..

vgcfgrestore -n vg_staging_tmp -l
Volume Group Configuration information in "/etc/lvmconf/vg_staging_tmp.conf"
VG Name /dev/vg_staging_tmp
---- Physical volumes : 4 ----
/dev/rdsk/c22t9d4 (Non-bootable)
/dev/rdsk/c23t9d4 (Non-bootable)
/dev/rdsk/c22t9d5 (Non-bootable)
/dev/rdsk/c23t9d5 (Non-bootable)

You can also use same command like below:

vgcfgrestore -f /etc/lvmconf/vg_staging_tmp.conf.old -l
Volume Group Configuration information in "/etc/lvmconf/vg_staging_tmp.conf.old"
VG Name /dev/vg_staging_tmp
---- Physical volumes : 4 ----
/dev/rdsk/c22t9d4 (Non-bootable)
/dev/rdsk/c23t9d4 (Non-bootable)
/dev/rdsk/c22t9d5 (Non-bootable)
/dev/rdsk/c23t9d5 (Non-bootable)


Decide with your best judgement what disks were in use for VG00..

Then check lvmtab, if it is messed up..


Recreate lvmtab & check after that..

Whatever you do have all config backup first..

/etc/lvmconf/vg00* (backup to safe place)
/etc/lvmtab - back up

Gud luck
Prashant

[Daniel Caçador]

Hi Prashant!

Sorry, but I did not understand what you he said.

Please, he tries to explain me again?


Thank's!

[Prashant Zanwar_4]

You have to run command as I explained in my example.. on vg00.conf & vg00.conf.old.. it will show output as disks which belong to VG00 as per previous config..
Make judgement and then recreate lvmtab ..
Thanks
Prashant

[Daniel Caçador]

OK. See the shoot of command...

And now?

Thank's!!!

[Daniel Caçador]

Now see this shot.
Why I can't mount the lvols?

Thank's!

[Prashant Zanwar_4]

Can you check /dev/vg00/* ... Are the lvol device files existing?

Regards
Prashant

[Daniel Caçador]

OK
Look the shot

[Prashant Zanwar_4]

DO ls -al

& vgdisplay -v vg00

& pvdisplay -v /dev/dsk/c1t8d0 ...

Thanks and regards
Prashant

[Prashant Zanwar_4]

also try running vgchange -a y vg00

Thx
Prashant

[Daniel Caçador]

Error....

Thank's!

[Prashant Zanwar_4]

vgcfgrestore -n /dev/vg00 -l

What does this show? is it same as

vgcfgrestore -f /etc/lvmconf/vg00.conf.old -l

if So, you have to boot system in maintainence mode, do

vgcfgrestore -f /tmp/vg00.conf /dev/rdsk/c1t8d0 , i am not sure of way of doing it in multiuser mode..
My assumption is you have lost lvm structure stored on disk..

You might wait for other replies, if some one has any better idea..

Good luck
Thanks and regards
Prashant

[Prashant Zanwar_4]

One more thing, if you have /etc/lvmpvg file, rename that file and run vgscan again
and then try mount -a

lvmpvg might have wrong info..

Best luck
Prashant

[Prashant Zanwar_4]

first try this lvmpvg solution, and then do any other steps, it has been solution in earlier forums also as I checked
Rgds
Prashant

[Daniel Caçador]

The commands are OK

But...look this boot shot

[Prashant Zanwar_4]

Did u try renaming lvmpvg? and running vgscan.. if not, run it ..

if yes.. go for other solutions

Regards
Prashant

[Prashant Zanwar_4]

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1007566

this thread is good to refer

Rgds
Prashant