Bug 1029327
| Summary: | 'qemu-img info' take too much time with 'cluster_size=512,preallocation=metadata' in the first time | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Jan Kurik <jkurik> |
| Component: | qemu-kvm | Assignee: | Hanna Czenczek <hreitz> |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | medium | Docs Contact: | |
| Priority: | high | ||
| Version: | 6.5 | CC: | acathrow, bsarathy, hreitz, juzhang, kwolf, michen, mkenneth, mrezanin, pm-eus, pm-rhel, qzhang, sluo, virt-maint, wquan, xfu, xigao, xuhan |
| Target Milestone: | rc | Keywords: | Regression, ZStream |
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | qemu-kvm-0.12.1.2-2.415.el6_5.3 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2013-11-22 00:26:06 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: | 1018451 | ||
| Bug Blocks: | |||
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Description
Jan Kurik
2013-11-12 07:53:41 UTC
Fixed in qemu-kvm-0.12.1.2-2.415.el6_5_5.3 Verify this bug with component: qemu-img-0.12.1.2-2.415.el6_5.3.x86_64 Step: 1. Create an image with 'cluster_size=512,preallocation=metadata', and then query the information. # time qemu-img create -f qcow2 -o cluster_size=512,preallocation=metadata disk.img 4G; time qemu-img info disk.img Result: After step1, Formatting 'disk.img', fmt=qcow2 size=4294967296 encryption=off cluster_size=512 preallocation='metadata' real 5m52.712s user 0m4.461s sys 0m11.529s image: disk.img file format: qcow2 virtual size: 4.0G (4294967296 bytes) disk size: 530M cluster_size: 512 real 0m0.006s user 0m0.000s sys 0m0.004s Also tested with default cluster_size and 'preallocation=metadata', the resule shows below. # time qemu-img create -f qcow2 -o preallocation=metadata disk.img 4G; time qemu-img info disk.img Formatting 'disk.img', fmt=qcow2 size=4294967296 encryption=off cluster_size=65536 preallocation='metadata' real 0m0.367s user 0m0.005s sys 0m0.207s image: disk.img file format: qcow2 virtual size: 4.0G (4294967296 bytes) disk size: 784K cluster_size: 65536 real 0m0.004s user 0m0.001s sys 0m0.002s Base on these test results above, this bug has been 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. http://rhn.redhat.com/errata/RHBA-2013-1750.html |