2011-12-19 08:40 AM - last edited on 2014-09-26 10:03 PM by alissa
I've noticed a disappointing feature of the ONTAP 8.1X45 7-mode simulator. It doesn't handle crashes well (or at all for that matter). If the 7-mode vsim is powered-off abruptly for whatever reason (power outage, VM powered-off, etc...) it cannot recover. When it reboots it goes into endless panic dumps (see screenshot). I lose my vsim configuration along with all my volumes, SV relationships, demos, etc... This is sad because the ONTAP 7.3 simulator handled this situation beautifully. I would run it in a Linux O/S with a journaled file system and both Linux and the 7.3 simulator would recover nicely.
Can anyone explain why it doesn't recovery successfully from crashes? Is there anything I can do to ensure it DOES recover from crashes as they're pretty common when running vsims on a laptop.
2011-12-19 08:44 AM
Here is another user who appears to be experiening the exact same issue. He has even tried to bring the aggregate on-line after the crash, but it reports that WAFL is inconsistent and needs to be checked.
2011-12-21 06:53 AM
I do not have the answer for you in regards to SIM8.1 crashes, but I can attest that SIM801 recovers gracefully. This is one of the reasons I run SIM801 and did not switch to SIM8.1.
2011-12-21 09:26 AM
Interesting. I quickly re-installed the 8.0.1 7-mode sim and manually powered it off. Did it twice in fact. It does recover successfully!
I'll have to reach-out to the ONTAP simulator development team and ask what is up with the 8.1 7-mode simulator and how they can fix it. This issue cannot continue.
2012-01-09 10:41 AM
Dear DataONTAP SIM Santa,
Please, please, release SIM for ESXi with SCSI controller and easy System ID change procedure. And if you through a bit of performance gain to us, simple mortals, we promise to sacrifice an EMC array every quarter in your name!
Thank you Dear DataONTAP SIM Santa.
2012-03-22 09:49 AM
Any word from the NetApp dev team on fixing the kernel crashes with v8.1? Also see https://communities.netapp.com/thread/19658 It would be nice to have a stable playground for SRM testing and the new vCenter v4 plugin.
2012-04-08 01:24 AM
Damn. Suffered a power-outage last night, whole neighborhood went black, and my 8.1 sim is ruined as well;
Bad Volinfo/Fsinfo magic for aggregate 'aggr0'
Neither volinfo block of aggregate aggr0 is valid OR the fsinfo block is i ...
PANIC: root aggregate or volume was taken offline in SK process rc on release 8.1RC3X18 ...
Dumping to core disk.
Could someone from NetApp please let us know if they consider/acknowledge this as a problem that needs fixing?
I don't think it reasonable to expect everyone to run the simulator on equipment that has production quality redundant no-break power feeds, etc.
And as such I don't think it's unreasonable to expect the sim to be a little bit more resilient to accidents like this.
2012-04-08 09:22 AM
I create a VMware SnapShot then restore when that happens... not an ideal workaround but works well and lets met have a baseline to setup my VSIMs the way I want and revert back after giving a demo or test.
2012-07-19 08:23 PM
I have run into the same thing with the 8.1.1 simulator so the issue hasn't been resolved yet. It's not small amount of work that goes into configuring a multi-node cluster, especially if you expand disk capacity, etc.
I would like to hear if there is an advanced scanning feature we can use to correct this, wafl iron, etc.