/etc/lvmconf/vg00.conf corrupted

[de gavre]

Our backup system gives the following message
cannot stat /etc/lvmconf/vg00.conf: No such device or address

Any command that requires an access on this file failed ( as to add a LV in vg00 for example)

I'm able to create a backup of the volume group configuration file using
vgcfgbackup -f /tmp/vg00.backup vg00

but, how to use it to repair the corrupted one ?

Sorry if my question is trivial, I'm a beginner in the HP-UX world .

Thanks for your help

Flo

[Pete Randall]

Flo,

Try "cp /tmp/vg00.backup etc/lvmconf/vg00.conf".


Pete

[de gavre]

already done of course

I got the error message
cp: cannot create vg00.conf: No such device or address

Moreover I can see vg00.conf in /etc/lvmconf using the ls command ( with no argument)
but an ls -l vg00.conf fails with the error message
./vg00.conf not found

[Helen French]

Try this command:

# vgcfgbackup -u /dev/vg00

[James R. Ferguson]

Hi:

"Cannot stat" simply means the file is non-existent or that you do not have the permissions to open it. The error does not infer corruption.

I suspect that your backup isn't running as root. The binary for 'vgcfgbackup' is setuid for root, so it would have the ability to create a new file in '/etc/lvmconf' regardless of the directory permissions.

Regards!

...JRF...

[Geoff Wild]

Just get rid of the the corrupt one:

mv /etc/lvmconf/vg00.conf /etc/lvmconf/vg00.conf.bad
vgcfgbackup vg00

Retry the backup...

Rgds...Geoff

[rariasn]

Hi,

Verify directory backup:

# ll -d /etc/lvmconf
drwxr-xr-x 5 root root 13312 Mar 3 03:51 /etc/lvmconf


# mv /etc/lvmconf/vg00.conf /etc/lvmconf/vg00.conf.old

# vgcfgbackup vg00

ran

[de gavre]

thanks for your replies
Shiju : vgcgfbackup -u /dev/vg00 doesn't work

vgcfgbackup: Configuration file "/etc/lvmconf/vg00.conf" not found or is corrupted

James : the command is launched by root ... but it doesn't work

Geof : I can't move the file
mv: vg00.conf: cannot access: No such device or address

rasiasn : the rights on the directory are correct
drwxr-xr-x 2 root root 8192 Mar 2 18:06 /etc/lvmconf
--> yesterday date because I tried a 'vgscan'

[de gavre]

thanks for your replies
Shiju : vgcgfbackup -u /dev/vg00 doesn't work

vgcfgbackup: Configuration file "/etc/lvmconf/vg00.conf" not found or is corrupted

James : the command is launched by root ... but it doesn't work

Geof : I can't move the file
mv: vg00.conf: cannot access: No such device or address

rasiasn : the rights on the directory are correct
drwxr-xr-x 2 root root 8192 Mar 2 18:06 /etc/lvmconf
--> yesterday date because I tried a 'vgscan'


Flo

[Victor BERRIDGE]

Hi Flo,
You cant move something that doesnt exist so lets start again, what is in /etc/lvmconf?
Do you see vg00.conf?


Courage!

All the best
Victor

[de gavre]

Victor,
As explained before I can see vg00.conf using the ls command ( with no argument)
ls /etc/lvmconf
lvm_lock vg00.conf vg01.conf vg01.mapfile
vg00.backup vg00.conf.old vg01.conf.old

But using ls -l , I get the following
ls -l /etc/lvmconf
/etc/lvmconf/vg00.conf not found
total 3024
---------- 1 root root 0 Feb 12 2003 lvm_lock
-rw------- 1 root sys 330752 Mar 2 17:56 vg00.backup
-rw-r--r-- 1 root root 1040 Aug 5 2005 vg00.conf.old
-rw------- 1 root sys 1182720 Aug 4 2005 vg01.conf
-rw------- 1 root sys 281 Dec 6 20:00 vg01.conf.old
-rw-rw-rw- 1 root sys 8 Aug 5 2005 vg01.mapfile


Thanks
Flo

[Victor BERRIDGE]

Hi again Flo,

You have a vg00.conf.old...
Try to cp -p vg00.conf.old vg00.conf

This looks very much like a problem of a file deleted while open...

Did it work?

[Victor BERRIDGE]

or vg00.backup....
(missed it , it is fare more recent...)

[Elmar P. Kolkman]

One thing to test: fuser /etc/lvmconf/lvm_lock

If no process is reported, the easiest way out I see is to re-create the lvmconf directory:
mv /etc/lvmconf /etc/lvmconf.old
mkdir /etc/lvmconf

Then do for all your vg's a vgcfgbackup.

By some strange effect your /etc/lvmconf directory is corrupted...

If succesfull, you can try removing /etc/lvmconf.old and its contents.

Good luck,

Elmar

[de gavre]

Thanks for your reply Victor ...
but my problem is that I can't access to vg00.conf.
"mv" , "cp" or "rm" are not possible because for the system the file doesn't exist
It's why I think this file is corrupted.
Would it be possible a link was missing ?
Regards
Flo

[Victor BERRIDGE]

I can see it doesnt exist that is why I ask you to copy an older version giving it that name, if the file has no reference anywhere it should work, otherwise you have a more serious corruption problem

Good luck

All the best
Victor

[Victor BERRIDGE]

Hi again Flo,
Like Elmar I would think the easiest thing would be to move or remove the /etc/lvmconf directory and recreate its countent since you seem to only have 2 volume groups so why not give it a try and inform us?
All you need to do is rm -rf /etc/lvmconf or mv /etc/lvmconf /etc/lvmconf.bad
then
vgcfgbackup vg00;
vgcfgbackup vg01

Now all should be fine again (well lets hope...)
Encore un petit effort, courage

Victor

[de gavre]

Thanks to everybody

Elmar, you were right : the solution was to rename the directory /etc/lvmconf in /etc/lvmconf_old

then I have simply recreated a new directory /etc/lvmconf (755 mode) and via 'cp -p' put in it all the files from /etc/lvmconf_old except vg00.conf .
For vg00.conf , I used the backup I got with vgcfgbackup -f /tmp/vg00.backup vg00

All is fine now.

Flo

[de gavre]

thanks for your patience Victor.
All is Ok now
Kind regards
Flo

[Kent Ostby]

Flo --

My additional concern here would be that there could be some underlying HW problem if you are getting wierd FS behaviour.

I'd suggest a dd of the root drive.

Something like:

dd if=/dev/rdsk/c0t6d0 of=/dev/null bs=64k

You're device may be something different than c0t6d0.

If you see I/O error returned then you have a hardware issue.

Best regards,

Oz

[de gavre]

Thanks for your advice Kent.
I've cheched and I have no I/O error.
Best regards
Flo