topic vgimport hangs..... in Operating System - HP-UX

vgimport hangs.....

Girish_17 — Tue, 16 Nov 2004 10:16:54 GMT

Hi All
I have created VG vgxx on node1 with one pv /dev/dsk/c1t0d2 and lv lvol1. Then created a Map file vgxx.map and ftped it to node2.
Then on node2 i created /dev/vgxx and /dev/vgxx/group.
Then i am running :
vgimport -s -v -m vgxx.map vgxx

But then this command simply hangs and i am nt even able to kill the process. What could be possible reason.
I am able to see the PV from both nodes and thier H/w paths are also identical.
On node1 i am able to activate vgxx and mount the filesystems and there it is working fine.

Thanks for all your valuable suggestions.
Regards,
Girish

Re: vgimport hangs.....

Pete Randall — Tue, 16 Nov 2004 10:24:07 GMT

How did you create the map file? Did you use the -s option on vgexport?

Pete

Re: vgimport hangs.....

Sanjay_6 — Tue, 16 Nov 2004 10:26:22 GMT

Hi Girish,

Also, did you use the binary mode of transfer when you ftp'ed the file over to the second node.

And Like Pete said, did you use the -s option while creating the map file.

Hope this helps.

regds

Re: vgimport hangs.....

Kim_18 — Tue, 16 Nov 2004 16:59:42 GMT

I am assumeing since you can see and activate on node 1 that you want to keep a copy of the volume group there

Make sure when you export, you use the -s
vgexport -p -v -s -m mapfile.map /dev/vgxxx

Ftp to node 2 in binary mode

vgimport -v -s -m mapfile.map /dev/vgxxx

That should work. Hope it helps

Re: vgimport hangs.....

Sridhar Bhaskarla — Tue, 16 Nov 2004 22:43:29 GMT

Hi Girish,

If it is hanging and if you are not able to kill, then there is an IO subsystem problem. Check 'ioscan' and see if there are any devices that are failing.Most likely your 'ioscan' may also be hanging.

Look at syslog.log file and 'dmesg' outputs for any errors.

-Sri

Re: vgimport hangs.....

Girish_17 — Wed, 17 Nov 2004 02:00:00 GMT

hi pete/sanjay/kim,
Thanks for your response but i have done both vgexport/import with -s option so that is not an issue.

Shridhar i doubt the same what you are telling but ioscan is not hanging but i tried doing "vgscan -a" (just to check whether hanged vgimport did something to the disks) it hangs.

Waiting for your inputs!!!!
Regards,
Girish.

ps. Will assign points soon.

Re: vgimport hangs.....

Gerhard Roets — Wed, 17 Nov 2004 04:28:21 GMT

Hi Girish

If this is a fresh install did you check that you do not have conflicting SCSI ID's on the cards.

By Default the initiator ID=7. On the secondary system you must change it.

Regards
Gerhard

Re: vgimport hangs.....

SYS ADMIN_7 — Wed, 17 Nov 2004 06:17:03 GMT

Hi Girish

Seems to be SCSI Initiator ID Conflict .
Change the SCSI ID as mentioned in previous post.
We were also facing the same problem and after changing the SCSI ID problem got solved.

Rgds
Suraj

Re: vgimport hangs.....

Sridhar Bhaskarla — Wed, 17 Nov 2004 09:51:28 GMT

Hi Girish,

Did you reboot the system?. I am not asking you to reboot (in Windoz way) to fix the problem but since there seems to be quite a few vgscan/vgimport sessions in hanging state, you can't possibly run vgimports. All the devices that have issues will be gone after the reboot and you may get a better picture. If it still didn't work after reboot, then I suggest you install latest LVM patches.

-Sri

Re: vgimport hangs.....

Bill Costigan — Wed, 17 Nov 2004 11:35:11 GMT

You really don't need the -s option with a single PV. That will scan the all the drives looking for the vg ids specified in the map file. Without the -s on the vgexport and vgimport, you get to specify the disks to use.

another question is, Is the hardware set up correctly so that both systems can see the drive. If it is scsi (non-SAN connected) one of the systems should have the id of the scsi card set to 6 (the default is 7) also the terminators must be correct.

Can you do a diskinfo /dev/rdsk/ on the system having the problem?

Re: vgimport hangs.....

KapilRaj — Wed, 17 Nov 2004 11:45:49 GMT

did u create the group special file using mknod and then the volume group directories ?

Kaps

Re: vgimport hangs.....

Bill Costigan — Wed, 17 Nov 2004 11:55:13 GMT

You need to create the special file named group under the correct dir e.g. /dev/vgxx. BUT the vgimport will create all the other subdirectories and special files.

Re: vgimport hangs.....

Girish_17 — Mon, 22 Nov 2004 01:13:18 GMT

Thank U All...
Problem is solved .. sorry for the delay in points assignement .. got some work around.
Well it had many issues related to SCSI card, it's driver, connectivity and importantly the initiator ID ...
Really helpful and as usual your replies were quick and accurate.
Thanks a lot
Regards,
Girish

ps.. gerhard sorry .. i ssigned you 8 by mistake .. you deserve 10 ..anyway will compenset next time

Re: vgimport hangs.....

Girish_17 — Mon, 22 Nov 2004 01:17:13 GMT

thanks