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 Post subject: Stuck DDS defragmentation task after CPG renaming
PostPosted: Fri Dec 10, 2021 3:41 pm 

Joined: Mon May 10, 2021 8:24 am
Posts: 6
Hello,

I had to convert all TDVV2 to TDVV3 and used the official documenation from HPE for Peer Persistence configurations. 95% went well of those tasks but in the end I got stuck. :(

I had a DDS with roundabout 50 TB in the old CPG after converting everything.

But during the final cleanup the situation got weird:
  • wanted to swap the CPG names (rename CPG1 with DDS2 to CPG1_old and rename CPG2 with DDS3 to CPG1) via setcpg -name ...
  • command ran fine without errors
  • some hours later after checking again everything I wanted to delete the former CPG with DDS2
  • CPG removal was blocked because of a running DDS defrag on this CPG
  • defrag processes got stuck during the renaming action and are not returning anymore
  • cancelling those tasks is not possible
  • renaming CPGs back to the initial names also doesn't change anything

This is the output of the defrag task so far:
Code:
2021-12-08 11:25:00 CET Started     defrag process for VVs
2021-12-08 12:03:07 CET Failed      mcall_checkvv_notify: VV ".sysvv_0CPG1" invalid
2021-12-08 12:03:07 CET Updated     Sysmgr MCVV_ADMCK_NOTIFY failed with: mcall_checkvv_notify: VV ".sysvv_0CPG1" invalid
2021-12-08 12:03:07 CET Failed      mcall_checkvv_notify: defrag VV ".sysvv_0CPG1" invalid


Does anyone have some ideas on how to get rid of this annoying situation? And does invalid mean it's corrupted from data integrity point of view or is it just related to the CPG renaming?

Thank you very much for your help!


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 Post subject: Re: Stuck DDS defragmentation task after CPG renaming
PostPosted: Sat Dec 11, 2021 2:27 am 

Joined: Mon Sep 21, 2015 2:11 pm
Posts: 1342
Location: Europe
If you've deleted all the other tdvvs in the CPG I would try and create a new tdvv, wait 2 minutes and delete it.

If it doesn't help I would log a case to have someone look at the logs...

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 Post subject: Re: Stuck DDS defragmentation task after CPG renaming
PostPosted: Thu Dec 16, 2021 4:07 am 

Joined: Mon May 10, 2021 8:24 am
Posts: 6
Unfortunately opening a case is no option anymore... I rebooted both nodes of the 3PAR sequentially and afterwards the stuck tasks had been gone.

And luckily after the reboot the DDS got automatically deleted leading to unitialized chunklets.

So despite the worrying about the "invalid" error message I'm lucky to have at least some disk space available again... :D


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