[gpfsug-discuss] TSM errors restoring files with ACL's

[Jonathan Buzzard]

On 05/03/2021 19:12, Frederick Stock wrote:
> CAUTION: This email originated outside the University. Check before 
> clicking links or attachments.
> I was referring to this flash, 
> https://www.ibm.com/support/pages/node/6381354?myns=swgtiv&mynp=OCSSEQVQ&mync=E&cm_sp=swgtiv-_-OCSSEQVQ-_-E 
> <https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ibm.com%2Fsupport%2Fpages%2Fnode%2F6381354%3Fmyns%3Dswgtiv%26mynp%3DOCSSEQVQ%26mync%3DE%26cm_sp%3Dswgtiv-_-OCSSEQVQ-_-E&data=04%7C01%7Cjonathan.buzzard%40strath.ac.uk%7C85cd5149f3f745b7137308d8e00ab18d%7C631e0763153347eba5cd0457bee5944e%7C0%7C0%7C637505683823937774%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=2b0LjE1Ycc3DPKto5kUTTLc0u5lG3DycsQGOjs%2BHgtw%3D&reserved=0> 
> 
> Spectrum Protect 8.1.11 client has the fix so this should not be an 
> issue for Jonathan.  Probably best to open a help case against Spectrum 
> Protect and begin the investigation there.
> 

Also the fix is to stop an unchanged file with an ACL from being backed 
up again, but only one more time.

I suspect we where hit with that issue, but given we only have ~90GB of 
files with ACL's on them I would not have noticed. That is significantly 
less than the normal daily churn.

This however is an issue with the *restore*.

Everything looks to get restored correctly even the ACL's. At the end of 
the restore all looks good given the headline report from dsmc. However 
there are ANS1589W warnings in dsmerror.log and dsmc exits with an error 
code of 8 rather than zero.

Will open a case against Spectrum Protect on Monday. I am pretty 
confident the warnings are false. The current plan is to do carefully 
curated hand restores of the three afflicted users when the rest of the 
restore if finished to double check the ACL's are the only issue.

Quite how the Spectrum Protect team have missed this bug is beyond me. 
Do they not have some unit tests to check this stuff before pushing out 
updates. I know in the past it worked, though that was many years ago 
now. However I restored many TB of data from backup with ACL's on them.


JAB.

-- 
Jonathan A. Buzzard                         Tel: +44141-5483420
HPC System Administrator, ARCHIE-WeSt.
University of Strathclyde, John Anderson Building, Glasgow. G4 0NG