Virtual SAN Free crashes when open-iscsi initiator connected

[alxsaz]

Hi everyone.

Please, help me with a problem we have with StarWind Virtual SAN Free in out test environment - it crashes when we connecting with open-iscsi initiator with multipathd.

in server log with debug logging enabled I see only these messages:

Code: Select all

4/19 13:35:47.337 6b4 debug: The program encountered a serious error and may be closed. Crash dump will be created.
Please, save the log file and the crash dump and report the problem to support@starwindsoftware.com
4/19 13:35:48.508 6b4 debug: Minidump 'C:\Program Files\StarWind Software\StarWind\starwind.20170419.133547.mdmp' created successfully.
4/19 13:35:48.524 6b4 S'exec' thread: Initiating shutdown sequence because of exception.
4/19 13:35:48.524 6b4 debug: The program encountered a serious error and may be closed. Crash dump will be created.
Please, save the log file and the crash dump and report the problem to support@starwindsoftware.com
4/19 13:35:49.712 6b4 debug: Minidump 'C:\Program Files\StarWind Software\StarWind\starwind.20170419.133548.mdmp' created successfully.

in Windows logs: "The StarWind Virtual SAN service terminated unexpectedly"

any ideas? I will give additional info if needed

[Ivan (staff)]

Hello alxsaz,
Thanks for interesting in StarWind solution.
Could you specify the build which you use?
You can find "version build" on top of the management console in help tab (about starwind management console) or on top of the service logs.
Share us the logs from both your servers according to our KB article: https://knowledgebase.starwindsoftware. ... ogs-bat-2/
Thanks!

[alxsaz]

Hello Ivan,
build we are using is 10833 (it was updated from 10811).

we are not using clustering for now, so we have only one Virtual SAN server.
I collected logs, file is too big to attach it here, so you can download it from my Dropbox: https://dl.dropboxusercontent.com/u/286 ... 232142.zip

[Ivan (staff)]

Hello alxsaz,
Thanks for logs!
Also, could you share with us the .mdmp files from StarWind folder? By this paths:
C:\Program Files\StarWind Software\StarWind\starwind.20170419.133547.mdmp
C:\Program Files\StarWind Software\StarWind\starwind.20170419.131722.mdmp
C:\Program Files\StarWind Software\StarWind\starwind.20170419.131402.mdmp
Thanks!

[alxsaz]

Hello Ivan!

Unfortunately, I can't share minidumps starwind.20170419.131722.mdmp and starwind.20170419.131402.mdmp, because they have been deleted
I have only these .mdmp files: starwind.20170419.133547.mdmp and starwind.20170419.133548.mdmp.
here are links to download (~800MB per file):
https://dl.dropboxusercontent.com/u/286 ... 33547.mdmp
https://dl.dropboxusercontent.com/u/286 ... 33548.mdmp

we can rerproduce crash and generate more minidumps, if needed.

[alxsaz]

I have some new data

Virtual SAN crashes not on connect, it looks like it happens when we create ext4 filesystem on connected lun and run ls

UPD:
checked it one more time, results:
connect, i/o on lun without filesystem (using fio) - ok
create FAT filesystem, ls on empty, create file, ls - ok
create ext4 filesystem, ls on empty -> crash. it is reproducing constantly.

initiator is:
Linux testvm10 3.16.0-4-amd64 #1 SMP Debian 3.16.39-1+deb8u2 (2017-03-07) x86_64 GNU/Linux
open-iscsi: 2.0.874-2~bpo8+1
multipath-tools: 0.6.4-5

[Ivan (staff)]

Hello alxsaz,
Thanks for update
We still trying to reproduce this issue and I will update this thread once we got results.
Have a good day

[alxsaz]

Hello Ivan

thanks for your update, we will wait for it.

unfortunately we can't do any new tests about this problem, because this hardware needed for other urgent tests, so we need to destroy this environment.
but we still interested in solution, and will wait for any update from you.

if you need any more info about our environment I still can give it to you

[Ivan (staff)]

Hello alxsaz,
I will update this thread once we will find the root of the issue.