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Mid-presentation

Mid-presentation. Shuanglong Zhang. Two ways. Modify the original dm-linear.c Copy it and make it a independent module. original. No need to change anything in makefile or somewhere else. Not flexible enough. new module. Need to change a little Link dmsetup and new module. Why linear.

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Mid-presentation

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  1. Mid-presentation Shuanglong Zhang

  2. Two ways • Modify the original dm-linear.c • Copy it and make it a independent module

  3. original • No need to change anything in makefile or somewhere else. • Not flexible enough

  4. new module • Need to change a little • Link dmsetup and new module

  5. Why linear • It's simple • Use it as a tool to "see" bio structures • Do a '0' to '0' map

  6. /proc • Create a /proc interface to see all the bio info in a sliding window.

  7. Next • /proc need to improve • controls on bio request based on kernel timer and request queue size

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