Bug 715237
Summary: | Core dump occurs when doing dd in the guest | ||||||
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Product: | Red Hat Enterprise Linux 5 | Reporter: | FuXiangChun <xfu> | ||||
Component: | kvm | Assignee: | Kevin Wolf <kwolf> | ||||
Status: | CLOSED CANTFIX | QA Contact: | Virtualization Bugs <virt-bugs> | ||||
Severity: | high | Docs Contact: | |||||
Priority: | high | ||||||
Version: | 5.7 | CC: | bcao, juzhang, michen, mkenneth, rhod, virt-maint | ||||
Target Milestone: | rc | ||||||
Target Release: | --- | ||||||
Hardware: | x86_64 | ||||||
OS: | Linux | ||||||
Whiteboard: | |||||||
Fixed In Version: | Doc Type: | Bug Fix | |||||
Doc Text: | Story Points: | --- | |||||
Clone Of: | Environment: | ||||||
Last Closed: | 2011-07-29 07:59:42 UTC | Type: | --- | ||||
Regression: | --- | Mount Type: | --- | ||||
Documentation: | --- | CRM: | |||||
Verified Versions: | Category: | --- | |||||
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
Cloudforms Team: | --- | Target Upstream Version: | |||||
Embargoed: | |||||||
Bug Depends On: | |||||||
Bug Blocks: | 580948 | ||||||
Attachments: |
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Description
FuXiangChun
2011-06-22 10:31:19 UTC
repeat 3 times for above steps, 100% reproduce. Created attachment 505964 [details]
backtrace
since only LV(/dev/vg0/data1) can reproduce this issue. in order to reproduce this bug i did below two testing: 1. i reinstall guest on LV(/dev/vg0/data1) and run dd command in guest 2. use other LV to start vm and run dd command in guest but all can not reproduce this bug, i am not sure how to trigger it. Can you please try qemu-img check on this image? Do you know if there have been I/O errors? for block device qemu-img don't support check option. # qemu-img check /dev/vg0/data1 qemu-img: This image format does not support checks Try the -f option: # qemu-img check -f qcow2 /dev/vg0/data1 hi kevin as i suspect guest maybe have problems that lead to core dump, so i reinstalled guest and try to reproduce it on lv data1. but after reinstall guest this bug can not be reproduced. now lv data1 haven't any errors and guest work well. # qemu-img check -f qcow2 /dev/vg0/data1 No errors were found on the image. There seems to be a real bug somewhere, but it hasn't been reproduced so far and we don't have any useful information about the broken image. Closing. |