Repost: TAR command issue

I am moving this item to its own post because it turned out to not be related to the original item.
I have been having a problem when attempting to create a VM using the VMs provided by JumpBox (www.jumpbox.com). It seems to get stuck untarring the data drive or any tar for that matter. My hypervisor system locks up completely when I simply try to untar the file at the command line. It requires me to do a hard power reset of the server to recover from the lock.
The file is a 10g compressed file which on my other (standard Oracle Linux) box decompresses in 1 second. I can then transfer the file using sftp to the Oracle VM server and create the VM with no problems.
I have not retested since changing the /OVS partition to sync. Could leaving this as default been the problem?

The problem with the TAR command was the mounting of the file system with the sync option. After retesting the IO to the disk is very very slow. uncompressing a virtual disk file of 10gb takes roughly 1 hour on the vm server and 3 seconds on my regular linux box. Any ideas on what I can do to increase the performance?

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Repost: TAR command issue

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