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09d0b30fd1
The vdev_id udev helper currently applies slot renumbering rules to every channel (JBOD) in the system. This is too inflexible for systems with non-homogeneous storage topologies. The "slot" keyword now takes an optional third parameter which names a channel to which the mapping will apply. If the third parameter is omitted then the rule applies to all channels. The first-specified rule that can match a slot takes precedence. Therefore a channel-specific rule for a given slot should generally appear before a generic rule for the same slot number. In this way a custom slot mapping can be applied to a particular channel and a default mapping applied to the rest. Signed-off-by: Ned Bass <bass6@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #2056
26 lines
520 B
Plaintext
26 lines
520 B
Plaintext
multipath no
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topology sas_direct
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phys_per_port 4
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# PCI_ID HBA PORT CHANNEL NAME
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channel 85:00.0 1 A
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channel 85:00.0 0 B
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channel 86:00.0 1 C
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channel 86:00.0 0 D
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# Custom mapping for Channel A
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# Linux Mapped
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# Slot Slot Channel
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slot 1 7 A
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slot 2 10 A
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slot 3 3 A
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slot 4 6 A
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# Default mapping for B, C, and D
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slot 1 4
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slot 2 2
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slot 3 1
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slot 4 3
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