/proc/diskstats shows broken values

Solution Verified - Updated -

Issue

  • /proc/diskstats shows broken values.
  • Here is the data of /proc/diskstats when this problem occurred.
    8   19 sdb3 62 32 1991 126 0 0 0 0 4294967295 3375491 4291591854
  • The 3rd value from the right should show the number of executing I/Os which is named in_flight in the kernel source, but it becomes 4294967295 (= -1).

Environment

  • Red Hat Enterprise Linux 5.3
    • Kernel Version: 2.6.18-128.1.1
  • Red Hat Enterprise Linux 6.0
    • kernel-2.6.32-71.14.1.el6

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Close

Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.