Regular Disk Corruption

A

AlSutton

Bit poster
Is anyone else encountering regular disk corruption with Ubuntu 10.04 LTS on a dual CPU Mac Pro?

I have a specific version of the sun JDK unpacked and a large source code tree unpacked in my home directory in the guest, and whenever I shut down the VM and restart it at a later date 9 times out of 10 I end up with one or the other being corrupted.

My machine is;

2x2.4 Quad Core Xeon
20GB Ram

Client;
1 CPU
4GB Ram
Ubuntu 10.04 LTS
Parallels Tools installed

I've *never* experienced corruption under Mac OS, the memory and disk are fine, and I can even run Windows VMs with no noticeable disk corruption, but I've tried 8.04 LTS & 10.04 LTS and both show the same problem.
 
Repeated Disk Corruption

Same here. I have cleanly rebuilt Centos VMs over and over with various #CPU and memory configs. Tried several physical HDs. Always after VM reboot random files on the VM are corrupted. Centos built from different mirrors and different versions. Been at this several days now.
 
Reverting to the Parallels Install Build from November 2nd 2010 appears to resolve the problem. I hadn't experienced the problem before updating to the December Parallels release so it looks like that December update is the problem. It has destroyed many new and old vms so beware.

ParallelsDesktop-parallels-en_US-6.0.11828.615184.dmg OK

ParallelsDesktop-parallels-en_US-6.0.11992.625164.dmg DISK CORRUPTION
 
Unfortunately I only have 6.0.11826 as an older version and I'm seeing the same problem with that as well.

Can I ask you to share your machine specs to see what the commonalities are?
 
I've opened a request in parallels request tracker. If anyone wants to add in information you should use "[Parallels #1086190] Repeatable Disk corruption" as the email subject.
 
Unlike the December release, the November 6.0.11828 build is still working great after a few days. No noticeable issues on VM with Centos 64bit 5.5 with 8CPU 2GB Memory.

Here's my spec:

Model Name: Mac Pro
Model Identifier: MacPro4,1
Processor Name: Quad-Core Intel Xeon
Processor Speed: 2.26 GHz
Number Of Processors: 2
Total Number Of Cores: 8
L2 Cache (per core): 256 KB
L3 Cache (per processor): 8 MB
Memory: 10 GB
 
Thanks for the spec. Did you install parallels tools?

For completeness my spec is;


Model Name: Mac Pro
Model Identifier: MacPro5,1
Processor Name: Quad-Core Intel Xeon
Processor Speed: 2.4 GHz
Number Of Processors: 2
Total Number Of Cores: 8
L2 Cache (per core): 256 KB
L3 Cache (per processor): 12 MB
Memory: 20 GB
 
I've not used Parallels Tools on the Centos vms. The problem is always on reboot. I could successfully build a new server and move files around, install server apps, etc. I could leave this running for any length of time with no issues. After graceful reboot, many files are corrupted and missing. Tried different physical hard drives and installation files. The November release i reverted to has none of those issues.
 
After going through the support procedure I've just received the following email;

---
Dear Al,

This issue is supposed to be fixed by the next release of Parallels Desktop. You may download and install Parallels Desktop 7 trial when it will be released and check if your issue has been fixed.

Please let me know if you have further questions.

Best regards,

----


Which to me sounds like they're not planning to release a fix in 6 and expect me to do their testing on a Trial of 7 and pay for an upgrade to get the issue resolved.

Personally, I'm more likely to pay for a cross-grade to another product if this is how they're going to handle problems like this one.
 
Although not using Linux VMs I getting it daily on a Windows 7 VM. I have to run sfc /scannow every morning when the VM has been started.

Never had this problem with previous builds and HD reports no errors.

Jake
 
I'm also seeing this issue with the recents builds on a Windows 7 VM. It usually manifests as a corrupted search database, I guess because it is updated very time just before the VM shuts down.

The fact that Parallels does not plan to fix this data corruption issue in the current version of the product is very disturbing - not sure I'm going to buy anything from them ever again with this attitude to their customers. Some small performance or display issue I would understand but we are talking about data corruption here...

--Jan
 
Just to add to that, I'm running on a MacPro with 6 core Xeon Westmere CPU (12 logical CPUs) and 12 GB of memory, using Mac OS 10.6.6.

After browsing through the Parallels forums it seems that we might be hitting an issue that is currently being investigated by the Parallels team - there is a workaround posted on http://kb.parallels.com/en/9697. I'm going to try that to see whether this resolves my issue or not.

--Jan
 
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