feature request - iSCSI reconnect after interruption

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Re: feature request - iSCSI reconnect after interruption

Veeam Logoby coreypenford » Thu Apr 12, 2018 6:26 pm

Will this fix be posted publicly or will I have to open a case regarding this as well?
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Re: feature request - iSCSI reconnect after interruption

Veeam Logoby Mike Resseler » Fri Apr 13, 2018 4:59 am

Hi coreypenford,

At this moment I don't have the information about the fix yet. When I do, I will let you know but the way we work, it is much better if you open a support call also. Then you will get the fix faster. Normally what we do is that we keep this a private fix until the next version and embed it (or the next update) unless it is something that is needed by many customers, then it becomes a KB. In this case I am not sure yet what it is going to be so please open a support case (and let us know the number)

Thank
Mike
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Re: feature request - iSCSI reconnect after interruption

Veeam Logoby mcz » Mon Apr 16, 2018 7:46 am

The fix isn't available yet, my engineer has also done a further test on friday and collected another dump. That means work is still in progress but I think it will look different in a few days :)
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Re: feature request - iSCSI reconnect after interruption

Veeam Logoby mcz » Tue Apr 17, 2018 2:26 pm

ok meanwhile I have received the fix but it's not working as expected. So Iet's wait and see what the engineering team is telling us.
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Re: feature request - iSCSI reconnect after interruption

Veeam Logoby Mike Resseler » Tue Apr 17, 2018 2:28 pm

That is not good news. Is it the same case that is still open?
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Re: feature request - iSCSI reconnect after interruption

Veeam Logoby mcz » Tue Apr 17, 2018 2:30 pm

Mike, I'm not sure if I got your question right but yes still the same case # 02717675 which has been opened on the 28th of march
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Re: feature request - iSCSI reconnect after interruption

Veeam Logoby Mike Resseler » Tue Apr 17, 2018 2:32 pm

Yes. Sorry, should have been more clear ;-)

If there is still no fix by Friday, please PM me (or use the forum here) so I can talk to some people

Thanks
M/
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Re: feature request - iSCSI reconnect after interruption

Veeam Logoby mcz » Tue Apr 17, 2018 3:18 pm

Thank you Mike, I'll let you know.
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Re: feature request - iSCSI reconnect after interruption

Veeam Logoby mcz » Thu Apr 26, 2018 9:56 am

OK, yesterday I have received another dll but issue is still there. I've already uploaded the logs and now let's wait for the next run. Seems to be a tricky task.
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Re: feature request - iSCSI reconnect after interruption

Veeam Logoby Mike Resseler » Thu Apr 26, 2018 10:05 am

Michael,

First, my apologies. I did talk with our teams after your DM and it became indeed clear that it isn't as simple as it looks. I'll spare you the details. I did however forgot to DM you back so mea culpa
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Re: feature request - iSCSI reconnect after interruption

Veeam Logoby mcz » Thu Apr 26, 2018 11:24 am

Thanks for the reply, Mike, but I would be very interested into the details. So if you like, please let me know what's going on. Thank you!
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Re: feature request - iSCSI reconnect after interruption

Veeam Logoby Mike Resseler » Thu Apr 26, 2018 12:32 pm

In short. It has been discovered that there is a memory leak somewhere in the code. When you restart, the program doesn't realize it needs to do the reconnect and therefore fails. The problem is, it can't be reproduced with all iSCSI connections (if I am not mistaken). So you basically found us a very interesting (but challenging) bug. Which is hard on us now, but actually good looking at it in the long run ;-)
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Re: feature request - iSCSI reconnect after interruption

Veeam Logoby mcz » Thu Apr 26, 2018 1:01 pm

Thank you for this explanation Mike, I'm glad that I've found something that maybe would have become obvious in a more annoying way. Support engineer has forgotten to tell me that I should try to do a backup twice because it couldn't work on the first but on the second attempt - which was indeed the case. So finally, the dev's have found a workaround :)
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Re: feature request - iSCSI reconnect after interruption

Veeam Logoby Mike Resseler » Thu Apr 26, 2018 2:08 pm 1 person likes this post

Yeah, but a workaround is not what is a final option at Veeam ;-)
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Re: feature request - iSCSI reconnect after interruption

Veeam Logoby mcz » Tue May 08, 2018 3:27 pm

OK support engineer has replaced some dll's and now I'm testing the behaviour again. What I saw so far is that veeam does the reconnect properly without error message :) As Mike said, workarounds are not veeam-style ;)
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