Bug 1515604
| Summary: | qemu-img info: failed to get "consistent read" lock on a mirroring image | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Han Han <hhan> |
| Component: | qemu-kvm-rhev | Assignee: | Kevin Wolf <kwolf> |
| Status: | CLOSED ERRATA | QA Contact: | Qianqian Zhu <qizhu> |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | 7.5 | CC: | chayang, coli, dyuan, juzhang, kwolf, lmiksik, michen, mrezanin, ngu, qizhu, qzhang, virt-maint, xuzhang |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | qemu-kvm-rhev-2.10.0-17.el7 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2018-04-11 00:49:36 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: | |
| Embargoed: | |||
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Description
Han Han
2017-11-21 05:52:00 UTC
Fix is on the mailing list: [PATCH for-2.11 0/2] Fix 'qemu-img info' on mirror target https://lists.gnu.org/archive/html/qemu-block/2017-11/msg00796.html Turns out this fixed only raw images, but not image formats. Sent a follow-up: [PATCH] block: Formats don't need CONSISTENT_READ with NO_IO http://lists.gnu.org/archive/html/qemu-block/2017-11/msg01191.html Fix included in qemu-kvm-rhev-2.10.0-17.el7 Reproduced on qemu-kvm-rhev-10:2.10.0-14.el7.x86_64:
Steps:
1. Launch guest:
/usr/libexec/qemu-kvm \
-name A \
-machine pc,accel=kvm \
-monitor stdio \
-drive file=/home/kvm_autotest_root/images/rhel74-64-virtio.qcow2,format=qcow2,if=none,id=drive-virtio-blk0,werror=stop,rerror=stop \
-device virtio-blk-pci,drive=drive-virtio-blk0,id=virtio-blk0
2. Block mirror:
(qemu) drive_mirror drive-virtio-blk0 mirror
3. # qemu-img info -U mirror
Results:
Can't get image information.
# qemu-img info -U mirror
qemu-img: Could not open 'mirror': Failed to get "consistent read" lock
Is another process using the image?
Verified on qemu-kvm-rhev-2.10.0-17.el7.x86_64:
Steps same as above.
Results:
Get image information correctly.
# qemu-img info -U mirror
image: mirror
file format: qcow2
virtual size: 20G (21474836480 bytes)
disk size: 1.9G
cluster_size: 65536
Format specific information:
compat: 1.1
lazy refcounts: false
refcount bits: 16
corrupt: false
Moving to VERIFIED.
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://access.redhat.com/errata/RHSA-2018:1104 |