System and method for managing resets in a system using shared storage
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United States of America Patent
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May 28, 2013
Grant Date -
Jun 28, 2012
app pub date -
Mar 6, 2012
filing date -
Jul 28, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A method of managing storage device resets in a system using shared storage is provided. A reset instruction is received at a shared storage device from a first node. In response, the storage device is at least partially reset, including aborting one or more queued I/O commands including a first I/O command received from a second node. A reset notification timer is started. If an I/O command is received from the second node during the reset notification timer, in response to receiving the I/O command the second node is notified of the storage device reset such that the second node can determine that the first I/O command was aborted. If no I/O command is received from the second node during the reset notification timer, at the expiration of the timer, the second node is notified of the storage device reset such that the second node can determine that the first I/O command was aborted.
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