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3PAR, HPUX, and DLE

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feeble
Valued Contributor

3PAR, HPUX, and DLE

We have a 3PAR array with quite a few disks presented to a host. We did a couple of DLEs on the host without issue. But on the 3rd attempt HPUX could not see the drive size change. I did some googling and found it is an issue with 3PAR firmware not sending a UA to the host. The only work arounds seem to be a reboot, or a hba reset. Both of which I am not wild about doing. I am curious if any one else has seen this issue and if they have a work around that does not require a reboot. We are working to see if there is a newer firmware release. But until then it's just another day in paradise.

5 REPLIES
Torsten.
Acclaimed Contributor

Re: 3PAR, HPUX, and DLE

It could help to tell your array model, inform os version and server os version. Did you work with vgmodify?

Hope this helps!
Regards
Torsten.

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those who understand binary, and those who don't.

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feeble
Valued Contributor

Re: 3PAR, HPUX, and DLE

All I know about the 3par is that it is a V400 with 3.1.1 of the OS. I am running 11.31 with the latest Sept. 2011 patch bundle. vgmodify will not work since hpux cannot see the change in the disk size.

Torsten.
Acclaimed Contributor

Re: 3PAR, HPUX, and DLE

Why not asking HP support? They are the experts for these new arrays. ;-)

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!   
feeble
Valued Contributor
Solution

Re: 3PAR, HPUX, and DLE

I have. Apparently it is a 3par firmware issue. They provided the options of rebooting or reseting the hbas. But I hae indeed found another workaround. I ran a vgmodify and set the max pv and extents to one level higher and once the change was complete the new disk size was seem by the os. Here is an example of what I am refering to:

 

/dev/disk/disk248 has already been expanded on the array to 600GB

 

This is the outout form a script I wrote:

 

/dev/rdisk/disk248      "01404928"      0x50002ac000301340      "3PARdata"      576716800

 

the size shows 550GB (576716800).  And here is the vgmodify output:

 

urrent Volume Group settings:
                                                      Max LV      255
                                                      Max PV       11
                                               Max PE per PV    18940
                                            PE Size (Mbytes)       32
                                          VGRA Size (Kbytes)     1712

VGRA space (Kbytes) on Physical Volumes with extents in use:
           PV                               current          -n
        /dev/rdisk/disk248                     1728       32768
        Summary                                1728       32768

Volume Group optimized settings (no PEs renumbered):
  max_pv(-p)        max_pe(-e)        Disk size (Mb)
  3                 65535             2097121
  4                 52732             1687425
  5                 41980             1343361
  6                 35068             1122177
  7                 29948             958337
  8                 26364             843649
  9                 23292             745345
  10                20988             671617
  11                18940             606081 <===CURRENT SETTINGS
  12                17404             556929
  13                16124             515969

 

 

As you can see, if the disk change could be seen by the OS, I could jsut do a vgmodify -a -E and all should be good. But the work around is to change the maxpv to 10 and extents to 20988. Once that is complete the OS sees the new disk size.

 

 

Fidel Alberto Sánchez
Occasional Visitor

Re: 3PAR, HPUX, and DLE

What can I do in VG version 2.1??

vgmodify -e or vgmodify -p is not supported for this version of VG.