Red Hat Bugzilla – Bug 590188
RHEL 5 guest memory inflates to ridiculous size (179.13 GB) and boot fails
Last modified: 2010-05-10 08:38:26 EDT
Description of problem:
Power on of 64-bit Linux guest in virt manager blew up completely. System hangs with kernel panic at "Starting udev" and virt management tools say the VM is consuming 179.13 GB of memory. This is clearly impossible.
Guest was an old guest which worked fine in RHEL 5.5 virt-manager, on a filesystem shared with a RHEL 6 boot. I created a new VM in virt manager using the old disk.
Attempts to set guest memory back to 512 M resulted in the same failure. So did 1GB. I removed the virtio disk over concern it could be causing the boot to fail. The guest with IDE disk failed the same way.
Running qemu-kvm from the command line did not exhibit the problem; this leads me to suspect something in libvirt or virt-manager running afoul.
Version-Release number of selected component (if applicable):
How reproducible: 100%
Steps to Reproduce:
1. Create VM from existing disk
2. Go through silly ISO media exercise.. no media or install needed
3. Disconnect CDROM, power off and back on
Massive memory usage reported by virt monitoring tools; not reported as such by kernel or qemu process.
Created attachment 412465 [details]
Screenshot of guest panic
Created attachment 412466 [details]
screenshot of virt-manager
Created attachment 412467 [details]
Screenshot showing reported memory and actual size in top
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux major release. Product Management has requested further
review of this request by Red Hat Engineering, for potential inclusion in a Red
Hat Enterprise Linux Major release. This request is not yet committed for
Pretty sure this was a libvirt bug affecting the beta, should be fixed with newer builds.
*** This bug has been marked as a duplicate of bug 566261 ***