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EC2 Instance with recurrent I/O errors, but fsck reports filesystems as clean
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I have a Linux (Ubuntu) instance running as m3.xlarge - this server is getting IO errors across multiple EBS volumes. I have unmounted the volumes and run fsck on them. One found some problems that were fixed, the others reported as clean. On restart, after a while (hour) I received more IO errors. As multiple volumes are involved, I wondered if there was an underlying hardware problem (I have multiple other very similar instances which are functioning as normal). I have stopped/started the instance to see if that would move it to a new host, but there is no way of telling.
Suggestions on finding the issue? Is there a way to confirm if an instance has moved to a new host?
