NetApp NDMP restore fails: Cannot create qtree

That's strange as filer is the one doing it in the first place. Try to increase ndmpd debug to higher level - it might give you additional data.

What is exactly the error message you get on filer's end?

H,

As requested the output from running the command from NetWorker server:

bash-3.00# nsrndmp_recover -c sXXXXa -s dXXXXX8-S 2309466763
42787:nsrndmp_recover: Performing recover from NDMP type of device
42897:nsrndmp_recover: Opened the tape device : nrst1a
42690:nsrndmp_recover: Performing non-DAR Recovery..
42617:nsrndmp_recover: NDMP Service Log: RESTORE: Wed Sep 9 16:25:32 2009: Begin level 0 restore
42617:nsrndmp_recover: NDMP Service Log: RESTORE: Wed Sep 9 16:25:32 2009: Reading directories from the backup
42617:nsrndmp_recover: NDMP Service Log: RESTORE: Wed Sep 9 16:25:33 2009: Creating files and directories.
42617:nsrndmp_recover: NDMP Service Log: RESTORE: Cannot create qtree: ./q_dmbcnt63_sqllogs
42617:nsrndmp_recover: NDMP Service Log: RESTORE: Creating a regular directory instead.
42617:nsrndmp_recover: NDMP Service Log: RESTORE: Wed Sep 9 16:25:33 2009: Writing data to files.
42617:nsrndmp_recover: NDMP Service Log: RESTORE: LUN files can only be restored to qtree root directories
42617:nsrndmp_recover: NDMP Service Log: RESTORE: can't mark as LUN: ./q_dmbcnt63_sqllogs/dmbcnt63_sqllogs.lun: Undefined error: 0
42617:nsrndmp_recover: NDMP Service Log: RESTORE: RESTORE IS DONE
42927:nsrndmp_recover: Successfully done


Have checked logs on filer and NOTHING is being reported.

Raised the issue with both EMC and NetApp support.

NetApp have advised this has been seen with NetBackup in the past and that its a backup software issue!

EMC Support have webex'd on to the system and managed to get a recovery to work - but NOT to original location.

Further investigation, if the qtree is removed (delete and recreate the volume, or new volume) the recovery works OK

Have now a procedure to recover the data that details this.


IKP

.

Since recover is done by NDMP I would argue this is an NetApp issue. I guess you can easily try this dump and recover command. I believe recently I was reading on now.netapp.com that for qtree there is new switch regarding certain things to make it work so problem might be related to those new switches as well. I believe this on is worth of investigating further.

Hi,

We have been restoring data froma long time in NDMP boxes, with these errors. All our boxes are NetApp. Although we get this error, the restore completes successfully and data gets restored properly too...

I think its more like some kind of configuration, but we are still trying to find out where we missed it.

Are you using SnapVault on the NetApp?

Here's why I ask. I see the error in your output:

RESTORE: LUN files can only be restored to qtree root directories

In searching articles for NetApp I found the following which seems to coincide with what you are experiencing:

Ndmpcopy ¿da root:netapp /vol/vol0/lun/test.lun 10.1.1.1:/vol/vol0/lun/test.lun

( lun files can only be restored to either root volume or qtree root directories )

( Also, when the lun is copied, it may not be full, so it my go fast while copying )

After this ¿ on destination :

Dest filer > reallocate start ¿o ¿n lunpath

Please let me know if I am on the right track.

Regards,
Rita