Bug 1510560
| Summary: | RFE: Resolve relative image file paths for http URLs | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux Advanced Virtualization | Reporter: | Daniel Erez <derez> |
| Component: | qemu-kvm | Assignee: | Hanna Czenczek <hreitz> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Tingting Mao <timao> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | --- | CC: | areis, chayang, coli, derez, hreitz, juzhang, knoel, lolyu, mgoldboi, mtessun, ngu, nsoffer, pingl, qzhang, rbalakri, rjones, virt-maint |
| Target Milestone: | rc | Keywords: | FutureFeature |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2019-06-13 05:31:32 UTC | Type: | Feature Request |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
|
Description
Daniel Erez
2017-11-07 16:40:14 UTC
Jeffrey, isn't this the same issue as https://bugzilla.redhat.com/show_bug.cgi?id=1397870#c30 Hi, Daniel Could you update what is your host kernel version and qemu-kvm-rhev (or qemu-kvm) version? And which architecture? Thanks, Qunfang (In reply to Qunfang Zhang from comment #3) > Hi, Daniel > > Could you update what is your host kernel version and qemu-kvm-rhev (or > qemu-kvm) version? And which architecture? > > Thanks, > Qunfang Checked on fc26: qemu-kvm-2.10.0-4.fc26.x86_64 kernel-core-4.13.9-200.fc26.x86_64 So the expected behaviour in the example would be that qemu combines the URL 'http://tick/tmp/test.qcow2' and the relative backing file name 'backing.raw' into a new URL 'http://tick/tmp/backing.raw' and access that, right? I believe implementing this becomes possible with some of Max's pending patches, so I'm reassigning the bug. In any case, this is not a bug, but an RFE, so I'm also moving it to 7.6. (In reply to Kevin Wolf from comment #6) > So the expected behaviour in the example would be that qemu combines the URL > 'http://tick/tmp/test.qcow2' and the relative backing file name 'backing.raw' > into a new URL 'http://tick/tmp/backing.raw' and access that, right? Right, same way gluster: urls are handled now. This is blocking our ability to provide smart state analysis for CFME and single file backups in API for backup vendors in RHV. I would want to see it in RHEL 7.5, if possible. Retest this issue in latest 8.1.0-av, there is no the issue any more. So will close this bug. Correct me if there is anything wrong, please. Tested with: qemu-kvm-4.0.0-4.module+el8.1.0+3356+cda7f1ee kernel-4.18.0-100.el8 Steps: 1. Create images in http server: # pwd /var/www/html/tmp # qemu-img create -f raw backing.img 20M Formatting 'backing.img', fmt=raw size=20971520 # qemu-img create -f qcow2 -o backing_file=backing.img,backing_fmt=raw overlay.qcow2 Formatting 'overlay.qcow2', fmt=qcow2 size=20971520 backing_file=backing.img backing_fmt=raw cluster_size=65536 lazy_refcounts=off refcount_bits=16 2. Create overlay in local # qemu-img --version qemu-img version 4.0.0 (qemu-kvm-4.0.0-4.module+el8.1.0+3356+cda7f1ee) Copyright (c) 2003-2019 Fabrice Bellard and the QEMU Project developers # qemu-img create -f qcow2 -o backing_file=http://$http_server_ip/tmp/overlay.qcow2,backing_fmt=qcow2 sn.qcow2 Formatting 'sn.qcow2', fmt=qcow2 size=20971520 backing_file=http://$http_server_ip/tmp/overlay.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16 # qemu-img info sn.qcow2 image: sn.qcow2 file format: qcow2 virtual size: 20M (20971520 bytes) disk size: 196K cluster_size: 65536 backing file: http://$http_server_ip/tmp/overlay.qcow2 backing file format: qcow2 Format specific information: compat: 1.1 lazy refcounts: false refcount bits: 16 corrupt: false |