Tuesday, March 28, 2017

VxVM vxvol WARNING V-5-1-12835 Cannot start volume : FastResync not licensed. Install FastResync license or turn FastResync off

Recently I found myself in a situation wherein I had to mount the Storage SNAP LUNs on another host. Since the source systems was configured in Veritas Cluster with FlashSnap, I started getting two errors while importing the Disk Groups.
  
1. Operation can only be executed on master; and 
2. FastResync not licensed. Install FastResync OR turn it off. Volume will not be started. 

Please be informed 2nd error is only applicable when the first one is resolved. The first error was common and we had to use (although 1 & 3 not mandatory)

1. vxdg -Cft import <dg Name> - To forcefully import the DG temporarily 
2. vxdisk -f updateudid daname -- To get rid of error udid mismatch.
3. vxdisk <daname> set clone=off -- As the disks were showing clone.

If you have SNAP volume imported as well; Please remove the SNAP volumes first

Now the FastResync one (The DiskGroup was imported but with error no. 2  and volume disabled):
I was not able to start the volumes as the license was not installed on the new host. I followed the below approach to sort this out: 

1. vxassist -g <dg Name> snapclear Vol_name vol_snp1--> Only when SNAP sd attached with dcl volume

2. vxvol -g <dg Name> stopall 
3. vxvol -g <dg Name> set fmr=off <Volume_Name> 

4. vxassist -g <dg Name> remove log volume logtype=dco
5. vxvol -g <dg Name> startall 

Please note that step 3 is only needed when you have SNAP sd attached to DCO volumes.  
Check the volumes. If everything in order

1. Stop all the volumes
2. Deport Disk Groups
3. Import again without the -t flag --> vxdg import <dg Name>

I hope you find the information helpful.
Please do leave your comments.

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