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With this feature, the DASD device driver more robustly handles DASDs that are attached via multiple channel paths and are subject to constant Interface-Control-Checks (IFCCs) and Channel-Control-Checks (CCCs) or loss of High-Performance-FICON (HPF) functionality on one or more of these paths. If a channel path does not work correctly, it is removed from normal operation as long as other channel paths are available. All extended error recovery states can be queried and reset via user space interfaces. Signed-off-by: Stefan Haberland <sth@linux.vnet.ibm.com> Reviewed-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Reviewed-by: Jan Hoeppner <hoeppner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> |
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