01-06-2014 11:18 PM
Hi ,
Am facing issue on Aix 7 with VxVm
VRTSvxvm 6.0.300.0 A F Veritas Volume Manager by and am using the Third party Multipathing software (Dynapath).
Problem is that after the "vxdisk scandisk" vxdisk list is showing the foriegn disk in "error " state.Please suggest a way.
Steps:
- creating nodes in /dev/vx/dmp, /dev/vx/rdmp
- Added as foreign disk
- vxdisk scandisks
-vxdctl enable
-vxdisk list
bash-3.2# vxdisk list
01-07-2014 03:56 AM
Hi,
is this a new setup or existing environment was upgraded to 6.0 ?
Did you look at dmp_native_support tunable ? is it set to on ?
refer below
https://sort.symantec.com/public/documents/sfha/6.0/aix/productguides/html/dmp_admin/ch02s01.htm
From above section
Devices that are multi-pathed with Third-party drivers (TPD) |
If a disk is already multi-pathed with a third-party driver (TPD), DMP does not manage the devices unless you remove TPD support. After removing TPD support, turn on the dmp_native_support tunable to migrate the devices. If LVM volume groups are constructed over TPD devices, then perform the steps to migrate the LVM volume groups onto DMP devices. |
To turn on the dmp_native_support tunable, use the following command:
# vxdmpadm settune dmp_native_support=on
The first time this operation is performed, the command reports if a volume group is in use, and does not migrate those devices. To migrate the volume group onto DMP, stop the volume group. Then execute the vxdmpadm settune command again to migrate the volume group onto DMP.
To verify the value of the dmp_native_support tunable, use the following command:
# vxdmpadm gettune dmp_native_support Tunable Current Value Default Value ---------------------------- ---------------- ----------------- dmp_native_support on off
Once tunable is set, scan disk again with vxdctl enable & see if you can see the disk
G
01-07-2014 04:12 AM
Hi ,
Thanks for the reply.I tried with your steps but still the state of the disk is "error".
It is a new setup not an upgraded one.
after "vxdisk scandisks" the nodes in the /dev/vx/dmp , /dev/vx/rdmp disappears.
01-08-2014 07:21 AM
Hi ,
Could you please reply to the above query. Its important .Thank you
01-08-2014 07:48 AM
Hello,
Are you able to see this device at OS layer ?
post the lspv output from the server, paste the exact command you have used to add foreign device , lastly paste the contents of /etc/vx/darecs file
G
01-08-2014 09:34 PM
Yes device is visible at OS level.
here is the output ;
bash-3.2# lspv
01-09-2014 03:17 AM
And we don't have the valid ASL .Added the disks as jbod.
after vxdctl enable and vxdisk scandisks the nodes in the /dev/vx/dmp and /dev/vx/rdmp disappears .
Is there any way to make them persistant..?
01-09-2014 07:38 PM
Hi,
I am looking for options here, first I would like to see the disk in online state, then we can think of persistent device issues.
If the disk is visible from OS level, can you put a PV on it so that it has a PVID & then rescan the disks ?
G
01-09-2014 09:36 PM
Hi Gaurav,
Here is the ouput ,disk has pvid but still after rescan and vxdctl enable disk is in error state
01-09-2014 09:52 PM
Is there any changes we can make in ODM side..? I mean any attributes ?
01-15-2014 09:23 PM
Hi,
Could you please provide any further suggestions..?
01-15-2014 10:01 PM
Hi Sashi,
one thing, are you certain that this device is not supressed from vxvm's view, based on the outputs you gave
01-15-2014 10:18 PM
Hi,
No the disk is not excluded ,i didn't see any entry of the hdiskdpd in excluded files.Here is the ouput.
bash-3.2# vxddladm listexclude all
01-16-2014 10:32 PM
Hi,
Do you have any further suggestions? Disks are recognized by the OS and they are not in the exculded list also.Is therr any other way Vxvm can exclude the psuedo devices?Please suggest it is important.Thank you
01-16-2014 10:39 PM
Hi, as this is urgent, I would suggest to open a technical support case to get an answer ...
What array you have in system ? I am not sure of Dynapath, is there a possiblity to supress that device from Dynapth & project device directly to DMP .. I am trying to troubleshoot the area of the problem
G
01-16-2014 11:07 PM
01-19-2014 09:18 PM
Hi Gaurav,
Any further suggestions?
01-22-2014 09:02 PM
Hi Gaurav,
Could you please reply for the above query.Thank you.
01-23-2014 12:26 AM
Hi,
What is the setting for tpdmode ?
what is current setting for tpdmode native/pseudo ,set it to native & see
vxdmpadm setattr enclosure enclosure_name tpdmode=native
G
01-23-2014 04:26 AM
Hi Gaurav ,
Present setting for the tpdmode is "native".Unable to set the "pseudo" option for the enclosure=aluadisk0.