topic lvm problem - Help! in Operating System - HP-UX

lvm problem - Help!

Vogra — Tue, 25 Jun 2002 14:33:23 GMT

Hi All,
my A500 (HPux11.00-64bits) was fail. After boot don??t recognize the ds2100 (4 disks-raid5). vgchange don??t produce any solution.
No led indicates fail...
Any idea?

Re: lvm problem - Help!

steven Burgess_2 — Tue, 25 Jun 2002 14:35:17 GMT

Hi

Does

ioscan -fnC disk

show the disk as being claimed ?

Steve

Re: lvm problem - Help!

Sanjay_6 — Tue, 25 Jun 2002 14:35:25 GMT

Hi Claudio,

Are the controllers identified in the ioscan. Can you attach your ioscan output for us to look at.

Hope this helps.

Regds

Re: lvm problem - Help!

Pete Randall — Tue, 25 Jun 2002 14:35:28 GMT

Claudio,

Are you saying that there are no led's lit? Does the unit have power?

Pete

Re: lvm problem - Help!

Duncan Edmonstone — Tue, 25 Jun 2002 14:35:56 GMT

Can you still see your disks using ioscan?

ioscan -funC disk

HTH

Duncan

Re: lvm problem - Help!

PIYUSH D. PATEL — Tue, 25 Jun 2002 14:36:50 GMT

Hi,

Check for the loose connections and cables. Check the terminators properly.

Are the disk showing in ioscan ???

Any changes made before ...

Piyush

Re: lvm problem - Help!

Shahul — Tue, 25 Jun 2002 15:10:47 GMT

Hi

Make sure that ur DS2100 is powered on and connected to the system properly. Don't hang on doubt, Please remove cables and cross check it. Then boot the system

#ioscan -fnC disk

Look for the device file corresponding to that 4 disks. If U are not able see thos, We can't blame LVM, Something is wrong with ur DS2100 or it's interface. If this is the case sort it out with H/W vendor.

Fortunately, If U are able to see the device files here, then

#strings /etc/lvmtab

Make sure that those device files are listed here under the concerned VG. If not there, do this

#vgscan

If entry is there in /etc/lvmtab, then

#vgchange -a y -q n vgxx

I hope now will be able to trace the problem

Best of luck
Shahul

Re: lvm problem - Help!

James R. Ferguson — Tue, 25 Jun 2002 15:15:00 GMT

Hi Claudio:

In addition to the suggestions thus far; assuming that you can see CLAIMED devices with 'ioscan', a useful probe is to interrogate the device with 'diskinfo':

# diskinfo -v /dev/rdsk/cXtYdZ

Functional disk will return a *non-zero* size along with other information.

Regards!

...JRF...

Re: lvm problem - Help!

S.K. Chan — Tue, 25 Jun 2002 15:44:10 GMT

Apart from what's been mentioned, you may want to quickly check if you see any IO error in "dmesg" or in /var/adm/syslog/syslog.log. If you don't see any then most likely the disks are not recognized at the first place which means you'll have to "ioscan" it and check physically (connection, termintaion, SCSI id clash).

Re: lvm problem - Help!

Vogra — Tue, 25 Jun 2002 15:50:30 GMT

Hi All!

result about ioscan -fnC disk:
Class I H/W Path Driver S/W State H/W Type Description
=========================================================================
disk 0 0/0/1/1.15.0 sdisk CLAIMED DEVICE SEAGATE ST39204LC
/dev/dsk/c1t15d0 /dev/rdsk/c1t15d0
disk 2 0/0/2/0.1.0 sdisk CLAIMED DEVICE HP DVD-ROM 304
/dev/dsk/c2t1d0 /dev/dvd /dev/rdsk/c2t1d0
disk 1 0/0/2/1.15.0 sdisk CLAIMED DEVICE SEAGATE ST39204LC
/dev/dsk/c3t15d0 /dev/rdsk/c3t15d0
disk 18 0/6/2/1.0.0.0 sdisk CLAIMED DEVICE I2O RAID5
/dev/dsk/c6t0d0 /dev/rdsk/c6t0d0
===========
The ds2100 is c6t0d0;
The cables are ok. The leds indicates that de disk are powered. I did vgexport but when I try to import I get the message:
Could not open Physical Volume "/dev/dsk/c6t0d0".

I think is hardware problem
Now the technician is comming...
Thanx to everyone...