multipathd fails to start in Red Hat Enterprise Linux 5 Update 9 with error "multipathd: cannot prepare namespace"

Solution Unverified - Updated -

Issue

  • multipathd fails to start, reporting "cannot bind ramfs on /sbin" or "cannot prepare namespace"
Jan 31 00:33:23 example multipathd: cannot bind ramfs on /sbin
Jan 31 00:33:23 example multipathd: cannot prepare namespace
  • multipathd won't start after updating to RHEL 5.9

Environment

  • Red Hat Enterprise Linux (RHEL) 5 Update 9
  • device-mapper-multipath releases starting with 0.4.7-54.el5, but prior to 0.4.7-59.el5
  • A separate file system mounted on /var/cache.

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