Does B&R 9.5 U2 contain kb1985 fix?

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Does B&R 9.5 U2 contain kb1985 fix?

Veeam Logoby Lewpy » Sat May 13, 2017 7:02 am

Subject says it all :)

Does the recently released B&R 9.5 Update 2 contain the workaround/fix from kb1985? https://www.veeam.com/kb1985

I couldn't find any mention in the release notes, but I am sure there are many smaller fixes not documented as fixed https://www.veeam.com/kb2283

Thanks :)
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Re: Does B&R 9.5 U2 contain kb1985 fix?

Veeam Logoby Lewpy » Sun May 14, 2017 8:36 am

Although DDOS v6.0.1.10 corrects the issue reported in "ETA 498457: Data Domain DD OS 6.0: File segments may be unexpectedly deleted during the DD OS cleaning cycle, which may result in data loss", which I assume is the issue kb1985 is referring to?
I have already upgraded the customer (for whom I installed kb1985) to DDOS v6.0.1.10, so hopefully that covers them :)
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Re: Does B&R 9.5 U2 contain kb1985 fix?

Veeam Logoby ndum » Mon May 15, 2017 11:42 am

Hi,

Is there already a news about it?
Updating the Data Domains is not for everybody possible and this is still a huge issue.

Thanks :D
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Re: Does B&R 9.5 U2 contain kb1985 fix?

Veeam Logoby foggy » Mon May 15, 2017 12:47 pm

The actual issue here is on Dell/EMC side and should be fixed in DD OS firmware. Even with kb1985 hotfix applied, you'd better schedule the jobs so that they do not overlap with the DD OS cleaning process. I cannot comment on whether the mentioned fix in DDOS v6.0.1.10 addresses this very issue, better contact Dell/EMC for confirmation. Thanks.
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Re: Does B&R 9.5 U2 contain kb1985 fix?

Veeam Logoby dustinn3 » Mon May 15, 2017 2:37 pm

I'm concerned about this as well. I've upgraded to DDOS V6.0.1.10, but you recommend scheduling my jobs around the cleaning cycle. So if it takes around 12 hours to do a clean on Tuesday at 6am and I go into my copy jobs and disable the transfer schedule from 6am - 7pm on Tuesday I should be good then?

Thanks,
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Re: Does B&R 9.5 U2 contain kb1985 fix?

Veeam Logoby foggy » Mon May 15, 2017 2:40 pm

Yes. However, I recommend to first check whether the DD OS version you have addresses the issue - this would allow you to avoid the reconfiguration.
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Re: Does B&R 9.5 U2 contain kb1985 fix?

Veeam Logoby ndum » Tue May 16, 2017 6:55 am

Okay it seems that we also need to update the data domains.

This EMC Note is also very bad....

Code: Select all
EMC Note 498457 recently announced – Segments ingested while the unit is in a cleanup cycle may be deleted, as the unit incorrectly marks them as invalid.  You would not know you lost these segments until you attempted to restore!

Affected versions:  DD OS 6.0, DD OS 6.0 6.0.0.1, DD OS 6.0 6.0.0.2, DD OS 6.0 6.0.0.20, DD OS 6.0 6.0.0.21, DD OS 6.0 6.0.0.30, DD OS 6.0 6.0.0.5, DD OS 6.0 6.0.0.9, DD Virtual Edition 3 & 3 SP1 All Editions


Is DD OS 6.0.1.10 fully supported by Veeam?

Thanks for the information.
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Re: Does B&R 9.5 U2 contain kb1985 fix?

Veeam Logoby ndum » Tue May 16, 2017 7:36 am

Ahh the Note to ETA 498457 is already posted... Sorry i'm confused ;)
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Re: Does B&R 9.5 U2 contain kb1985 fix?

Veeam Logoby foggy » Tue May 16, 2017 10:17 am

ndum wrote:Is DD OS 6.0.1.10 fully supported by Veeam?

Yes, minor updates are typically supported by default.
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Re: Does B&R 9.5 U2 contain kb1985 fix?

Veeam Logoby layte » Tue May 16, 2017 3:57 pm

I'm running 6.0.1.0-556307 so looking at the note I take it I do not need to rush into updating to 6.0.1.10

Heavens forbid EMC make finding patch and fix notes not an exercise in annoyance and failure.
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Re: Does B&R 9.5 U2 contain kb1985 fix?

Veeam Logoby Lewpy » Mon May 22, 2017 7:39 am

Dell/EMC have updated the release notes for v6.0.1.10 to Rev 02, and have now included the following under "Fixed Issues"
Issue 183969 - This release resolves a race condition between ingest and Garbage Collection (GC) which could cause newly ingested segments to be mistakenly deleted, resulting in data loss and a file system panic.


Foggy - while I appreciate your stance that it is up to Dell/EMC to say whether the issue is fixed or not, contacting Dell/EMC to ask whether they have resolved an issue highlighted by a 3rd party in a 3rd party KB article won't really get far :cry:
Now, I assume that either Veeam discovered the issue and discussed it with Dell/EMC, or where informed of the issue by Dell/EMC and instigated the workaround. If so, was Veeam issued with an "Issue Number" by Dell/EMC to define/document the issue? And can that be shared? If so, it might match the above Issue number, or I can approach Dell/EMC and ask directly if a particular Issue is resolved (which is more likely to get an answer).

Thanks :D
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Re: Does B&R 9.5 U2 contain kb1985 fix?

Veeam Logoby foggy » Mon May 22, 2017 11:36 am 1 person likes this post

Hi Lewis, I was given the 180010 number by our support techs.
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Re: Does B&R 9.5 U2 contain kb1985 fix?

Veeam Logoby Lewpy » Mon May 22, 2017 11:59 am 1 person likes this post

Thanks foggy :)
I've raised an SR with Dell/EMC, and I'll post anything pertinent from their reply.
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Re: Does B&R 9.5 U2 contain kb1985 fix?

Veeam Logoby Lewpy » Mon May 22, 2017 2:52 pm 1 person likes this post

I have had a reply back from Dell/EMC

I just found bug 180010 and from the notes is a duplicate of 183969 which have been addressed on the latest DDOS code.


Updating to v6.0.1.10 resolves the issue that kb1985 addressed, so upgrading to B&R v9.5U2 should be okay :)
This doesn't help those who can't update to latest DDOS: you either need the hotfix (on B&R v9.5U1), or carefully manage your cleaning cycle timings :?
But I can say that having upgraded to DDOS 6 with Veeam 9.5 Update 1, I have seen much improved performance around merges, etc. 8)
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Re: Does B&R 9.5 U2 contain kb1985 fix?

Veeam Logoby foggy » Mon May 22, 2017 2:55 pm 1 person likes this post

Thanks for checking, Lewis. Much appreciated.
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