Red Hat Bugzilla – Bug 499630
F-11 Xen 64-bit domU hangs when trying to format a fake 5TB disk
Last modified: 2010-06-28 08:25:16 EDT
Description of problem:
I'm following the test case here:
In step 6, we use a script to generate a fake 5TB disk and then attach that to the F-11 domU. That part works fine, and inside the guest I could then partition the resulting disk using parted. However, trying to do mkfs.ext4 on that partition resulted in a hard-lockup of the domU. Unfortunately, I don't have much more information than that, and I'm not sure if this is a dom0 or domU bug. However, it should be easily reproducible.
The domU kernel is 18.104.22.168-126.fc11.x86_64
was written precisely to test read/write access to very large devices and files, and may be of help in debugging exactly where the IO goes wrong here.
When you say "hard lockup", do you mean nothing is working at all, or that usermode doesn't work? Does it respond to sysrq?
I don't think #503840 is Xen-specific, but there's enough overlap (Xen+ext4) to be a bit worrying.
This bug appears to have been reported against 'rawhide' during the Fedora 11 development cycle.
Changing version to '11'.
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