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Linux on System z Current & Future Technology - z/VM - IBM

Linux on System z Current & Future Technology - z/VM - IBM

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<strong>IBM</strong> <str<strong>on</strong>g>Linux</str<strong>on</strong>g> and <strong>Technology</strong> Center<strong>System</strong> z kernel features – Storage FICON• DASD sanity check to detect path c<strong>on</strong>necti<strong>on</strong> errors (kernel 3.3)– An incorrect physical c<strong>on</strong>necti<strong>on</strong> between host and storage server which is notdetected by hardware or microcode can lead to data corrupti<strong>on</strong>– Add a check in the DASD driver to make sure that each available channel path leadsto the same storage server• Extended DASD statistics (kernel 3.1)– Add detailed per-device debugging of DASD I/Os via debugfs– Useful to analyze problems in particular for PAV and HPF33© 2012 <strong>IBM</strong> Corporati<strong>on</strong>

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