Kdump fails to save vmcore into a disk of non-zero segment number

Solution Verified - Updated -

Issue

  • Kdump fails if the segment number of a disk where kdump tries to save vmcore is not zero. Kdump cannot recognize the target disk and fails with the following message.
   PCI: not using MMCONFIG
   PCI: Using configuration type 1 for base access
   (snip)
   dracut-pre-pivot[3146]: device node not found
   kdump: dump target is 
   kdump: error: Dump target  is not mounted.
   kdump: saving vmcore failed
   Rebooting.

Environment

  • Red Hat Enterprise Linux 7.0
  • A system with multiple PCI segment groups

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content