id summary reporter owner description type status component version resolution keywords cc guest host 9604 Restoring snapshot fails, crashes all running instances => Fixed in SVN Kenny "Hi, I was running the 4.1 version of Virtualbox on a Debian Squeeze, 2.6.32-5-amd64 kernel machine. I had seen twice an attempt to restore a snapshot using VBoxManage fail: user@host~$ VBoxManage snapshot virtualhost restore post Restoring snapshot 65ec2064-0601-49e3-ac0c-46b2ebc66f6b 0%...10%...20%...30%...40%...50%... Progress object failure: NS_ERROR_CALL_FAILED VBoxManage: error: Snapshot operation failed. No error message available! What was even more concerning, however, was that all other running virtual instances immediately crash, such that VBoxManage list runningvms returns zero instances. This is a bit of a killer problem, as I was going to run this on a server for multiple people each of who would have multiple instances, but the thought of one person trying to do a restore and crashing every other instance is clearly not appetizing. I raised this here, but got no response: http://forums.virtualbox.org/viewtopic.php?f=7&t=43951 So, I decided that maybe Virtualbox didn't like a 64-bit OS, so today re-installed the machine entirely with Debian Squeeze 32-bit. Alas, the exact same problem happened, and this time I was using the GUI to take and restore the snapshot. Taking the snapshot works, restoring the snapshot crashes everything. Further information from dmesg isn't particularly helpful, to me, anyway: [ 8646.862243] VBoxSVC[12389]: segfault at 0 ip 0814f102 sp b63140f0 error 4 in VBoxSVC[8048000+21a000] I can only guess therefore that Virtualbox doesn't like the hardware, since it's a total re-install. This machine is pretty powerful; two Intel X5650 processors, 32GB or RAM, 15k disks. If anyone can suggest what to look into, I'd appreciate it, because Virtualbox is totally awesome except for this snapshot issue. Please help me move my team away from VMWare Server 2!" defect closed other VirtualBox 4.1.2 fixed snapshot Linux Linux