cancel
Showing results for 
Search instead for 
Did you mean: 

PV unavailable

 
vijay alur alur
Frequent Advisor

Re: PV unavailable

Ok Trosten,

 

Please find attached the required output's.

 

 

Regards,

Vijay

Lead Engineer, IMS.
iGATE
Torsten.
Acclaimed Contributor

Re: PV unavailable

You have 2 DS2405 disk enclosures, each with 15 disks. In the first enclosure there is a problem with disk in slot 2 (NO_HW), in the second with disk in slot 12 (FAILED). Check both and replace if needed.

 

 


Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
No support by private messages. Please ask the forum!

If you feel this was helpful please click the KUDOS! thumb below!   
vijay alur alur
Frequent Advisor

Re: PV unavailable

Thanks a lot Torsten!!

 

Regards,

Vijay.

Lead Engineer, IMS.
iGATE
Torsten.
Acclaimed Contributor

Re: PV unavailable

Note: if you replace the disks online, they will remain in NO_HW status until you run fcmsutil with replace_dsk option. The syslog will tell you the details after an ioscan.

 

Example: fcmsutil /dev/fcd0 replace_dsk 0x0a


Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
No support by private messages. Please ask the forum!

If you feel this was helpful please click the KUDOS! thumb below!   
vijay alur alur
Frequent Advisor

Re: PV unavailable

Hi Torsten,

 

i was just going through the cstm log's, in the first disk enclosure logs i.e. with device id 37, i cannot see any fault. where as in the second disk enclosure with device id 58, i can see a fault for disk in slot # 12. But as you said, both the disk enclosure's have faulty disks.

 

can you please help me with that???

 

 

 

By the way we just did a reboot for both the nodes in the cluster and now the disk is not seen in the ioscan output, but it is visible in the vgdisplay or /etc/lvmtab. it seems the metadata got updated after reboot. 

 

 

Also i have one doubt about the device naming, i was in an assumption that the device file c6t12d0 and c7t12d0 are physically same disk but accessed through 2 different controller. my assumption was that t12d0 is same for both the disk that means its same disk but 2 device file for 2 different path's. Can you hlep ,me with this as well?

 

Thanks and Regards,

Vijay

Lead Engineer, IMS.
iGATE
Torsten.
Acclaimed Contributor

Re: PV unavailable

Look at your ioscan:

 

target      5  0/2/1/0/4/0.8.0.255.0.2     tgt        NO_HW       DEVICE
target     32  0/3/1/0/4/0.8.0.255.0.12    tgt        NO_HW       DEVICE

You will also notice this:

disk       18  0/3/1/0/4/0.8.0.255.0.7.0   sdisk      CLAIMED     DEVICE       HPQ     BD03659532
disk       17  0/2/1/0/4/0.8.0.255.0.7.0   sdisk      CLAIMED     DEVICE       HP 36.4GST336607FC

Same slot, different disks. This means you have 2 enclosures. It is a cluster?  "cmviewcl" will tell. For this reason you have a lvmpvg file! I assume you have 2 nodes, first connected to controller A of the first JBOD, second node to controller B, vice versa for the second JBOD.

 

After a reboot, a "NO_HW" device will disappear, this is not nice, but normal.

 

 

Do a "diskinfo" for both present disks in a same slotnumber and you will see different serial numbers.


Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
No support by private messages. Please ask the forum!

If you feel this was helpful please click the KUDOS! thumb below!   
vijay alur alur
Frequent Advisor

Re: PV unavailable

Hi Torsten,

 

if i have a failed disk and i am replacing it with a new disk. how can i give the same disk name as the old disk device file name to the new disk's device file name?? the OS Version is hpux 11.23.

 

Please suggest??

 

 

Regards,

Vijay.

Lead Engineer, IMS.
iGATE
Torsten.
Acclaimed Contributor

Re: PV unavailable

The device special file name is bound to the slot, so it will be the same after replacement.


Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
No support by private messages. Please ask the forum!

If you feel this was helpful please click the KUDOS! thumb below!   
vijay alur alur
Frequent Advisor

Re: PV unavailable

OK, thanks Torsten.

 

then after replacing the disk i do not need to make any chnages in the cluster config file since the disk that got failed is also part of second cluster lock disk along with being a data disk.....

 

we have setup a plan for the disk replacment and would be scheduling the disk replacement activity.

 

Your suggestion were very helpful and knowledgable for me.Thanks again!!

 

Regards,

Vijay

Lead Engineer, IMS.
iGATE
Torsten.
Acclaimed Contributor

Re: PV unavailable

Follow this guide to replace the disk:

When_Good_Disks_Go_Bad_WP
http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c01911837/c01911837.pdf



When it comes to "vgchange -a y ..." replace this by "vgchange -a e ..." because of the cluster. Perform the command from the node that owns the VG. You did not mention this is a cluster, but I assumed this already.

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
No support by private messages. Please ask the forum!

If you feel this was helpful please click the KUDOS! thumb below!