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1. kdump status is odd: restarting kdump with new configuration... Stopping kdump:[ OK ] Error: kdump restart failed "service kdump start" has output on stderr mount: block device debug is write-protected, mounting read-only mount: cannot mount block device debug read-only Checking kdump service kdump is running 2. kdump was not really performed before reboot For detail, please refer to the belowing test output, kdump is stataus is odd, and kdump was not really : https://hardware.redhat.com/results.cgi?cert_id=709613&id=231345
cert#709613: https://hardware.redhat.com/hwcert/show.cgi?id=709613
From the logs: Error: kdump restart failed "service kdump start" has output on stderr mount: block device debug is write-protected, mounting read-only mount: cannot mount block device debug read-only it seems as though kdump may not be running correctly. Can it be restarted manually via: > service kdump restart
*** Bug 748700 has been marked as a duplicate of this bug. ***
(In reply to comment #3) > it seems as though kdump may not be running correctly. Can it be restarted > manually via: > > > service kdump restart Yes, only stderr output were printed, which caused v7 to fail.