Need to set read-ahead (blockdev) value on multipath device

Solution Unverified - Updated -

Issue

  • Need to set the read ahead value to optimize db.

    Command planning to run is:

/sbin/blockdev --setra 16385 /dev/xxxx

Should I be choosing the mpath devices created by multipath to set this option or the underlying backend devices?

Environment

  • Red Hat Enterprise Linux 6.4

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