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Do you use any external USB hub?
Is the computer in sleep mode when unplugging the USB device causes the issue?
I suggest to contact the product vendor to see if there is any BIOS firmware upgrades for your computer that addresses the problem. Other than that, your USB subsystem may have a hardware defect. It might be interesting to see if the problem persists using another OS.
Enterprise Linux, such as Oracle Linux, is not designed for Desktop computers and Laptops. It might be a better idea to run a supported OS on your Laptop (Windows) and run Oracle Linux inside a virtual machine using e.g. free Oracle VirtualBox. There are also pre-built developer VM's available: http://www.oracle.com/technetwork/community/developer-vm/index.html
No, the computer is not in sleep mode (although once it happened thus too).
I do have dual boot with Windows. The problem never occurs in Windows.
(now that is some frustration :) )
I am not using any USB hub, but connecting it directly (maybe I should use one?)
Other than this problem which is very annoying, I believe having Linux as host and Windows as a possible guest leaves significantly more flexibility, as you get a high degree of control over how much resources and where you want the computer to use them (from boot freedom and command line grepping/flexible drive mounting etc. up to advanced graphical interface and fancy graphical development in a Windows guest VM).
I've experienced various other Linux OSes for host.
I use various VMs for pretty much everything, I need to swap and pause them frequently, so I would think OEL is the best platform for Oracle VirtualBox. Which in itself is a bliss too.
Edited by: paul.oprea on 28-Jan-2013 06:47
Are you using dual-boot or do you run other OS's as virtual machines already? Perhaps somewhere there lies the source of your problem, since you cannot share USB devices among different systems, and only one of the systems can control the device.
VirtualBox and Oracle Linux should work well, but running Oracle Linux directly on unsupported hardware, e.g. Laptop, does not help. I suggest the other way around and install a supported OS for your Laptop, and use Oracle Linux under VirtualBox. If will give you the same control of flexibility and resources.
Btw, OEL is history. The product is called Oracle Linux or simply "OL".
paul.oprea wrote:Do you have Oracle Linux support? If so, please log an SR about this. Otherwise, you can log the bug with full log files at http://bugzilla.oracle.com
Any help appreciated. It's a big surprise to see such crude bug on an otherwise stable and dependable OS. I can provide any log files or information that might help.
Does the following apply?
NTFS-3g is fuse-based and runs in user space as opposed to kernel space. I think this means that it runs in a protected virtual memory space and can be swapped to disk.
Does it make any difference whether or not you unmount the device before ejecting?
Does it make any difference if you mount the NTFS drive using the "sync" option to bypass the write cache?