Bug 1254927
| Summary: | qemu-img shows Input/output error when compressing guest image | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | FuXiangChun <xfu> |
| Component: | qemu-kvm-rhev | Assignee: | Hanna Czenczek <hreitz> |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 7.2 | CC: | chayang, juzhang, knoel, lmiksik, michen, mrezanin, qiguo, qzhang, virt-maint, xfu |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | qemu-kvm-rhev-2.3.0-23.el7 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2015-12-04 16:53:55 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
Can you please grant access to the affected image? (or upload an image we can use to reproduce it). Fixed upstream with 3e5feb6202149e8a963a33b911216e40d790f1d7, we'll see whether a backport for rhev-7.3.0 is needed or whether that commit will be included by rebase. Fixed upstream, patch is simple, impact on customers is real. Fix included in qemu-kvm-rhev-2.3.0-23.el7 Reproduced with qemu-kvm-rhev-2.3.0-15.el7.x86_64/
Steps:
# qemu-img info win7-64-sp1-virtio.qcow2
image: win7-64-sp1-virtio.qcow2
file format: qcow2
virtual size: 30G (32212254720 bytes)
disk size: 7.8G
cluster_size: 65536
Format specific information:
compat: 0.10
refcount bits: 16
# qemu-img convert -c -f qcow2 -O qcow2 /home/win7-64-sp1-virtio.qcow2 /home/win7-64-bak-compress.qcow2
qemu-img: error while compressing sector 9418752: Input/output error
# qemu-img info win7-64-bak-compress.qcow2
image: win7-64-bak-compress.qcow2
file format: qcow2
virtual size: 30G (32212254720 bytes)
disk size: 2.0G
cluster_size: 65536
Format specific information:
compat: 1.1
lazy refcounts: false
refcount bits: 16
corrupt: false
So this bug is reproduced.
Verify this bug with qemu-kvm-rhev-2.3.0-24.el7.x86_64
Steps as above:
# qemu-img convert -c -f qcow2 -O qcow2 /home/win7-64-sp1-virtio.qcow2 /home/win7-64-bak-compress1.qcow2 -p
(100.00/100%)
# qemu-img info win7-64-bak-compress1.qcow2
image: win7-64-bak-compress1.qcow2
file format: qcow2
virtual size: 30G (32212254720 bytes)
disk size: 3.5G
cluster_size: 65536
Format specific information:
compat: 1.1
lazy refcounts: false
refcount bits: 16
corrupt: false
No error occurs, so this bug is fixed.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHBA-2015-2546.html |
Description of problem: qemu-img-rhev-2.3.0-18.el7.x86_64 and qemu-img-rhev-2.3.0-1.el7.x86_64, Both hit this issue. e.g # qemu-img convert -c -f qcow2 -O qcow2 /home/win7-64-bak.qcow2 /home/win7-64-bak-compress.qcow2 qemu-img: error while compressing sector 9263232: Input/output error Version-Release number of selected component (if applicable): qemu-img-rhev-2.3.0-18.el7.x86_64 3.10.0-304.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1.# qemu-img info /home/win7-64-bak.qcow2 image: /home/win7-64-bak.qcow2 file format: qcow2 virtual size: 40G (42949672960 bytes) disk size: 26G cluster_size: 65536 Format specific information: compat: 0.10 refcount bits: 16 2.# qemu-img convert -c -f qcow2 -O qcow2 /home/win7-64-bak.qcow2 /home/win7-64-bak-compress.qcow2 qemu-img: error while compressing sector 9263232: Input/output error 3.# qemu-img info /home/win7-64-bak-compress.qcow2 image: /home/win7-64-bak-compress.qcow2 file format: qcow2 virtual size: 40G (42949672960 bytes) disk size: 2.0G cluster_size: 65536 Format specific information: compat: 1.1 lazy refcounts: false refcount bits: 16 corrupt: false 4.# qemu-img check /home/win7-64-bak-compress.qcow2 No errors were found on the image. 70497/655360 = 10.76% allocated, 98.46% fragmented, 97.99% compressed clusters Image end offset: 2147614720 Actual results: Expected results: Additional info: