Bug 2026537
| Summary: | Can't vol-download volume with --sparse option in split daemon mode | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 9 | Reporter: | Meina Li <meili> |
| Component: | libvirt | Assignee: | Michal Privoznik <mprivozn> |
| libvirt sub component: | General | QA Contact: | Meina Li <meili> |
| Status: | CLOSED ERRATA | Docs Contact: | |
| Severity: | medium | ||
| Priority: | unspecified | CC: | jdenemar, lmen, mprivozn, virt-maint, xuzhang |
| Version: | 9.0 | Keywords: | Automation, Triaged, Upstream |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | libvirt-8.0.0-0rc1.1.el9 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2022-05-17 12:45:52 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: | 8.0.0 |
| Embargoed: | |||
Enable split daemon mode:
# cat split-daemon.sh
systemctl stop libvirtd.service
systemctl stop libvirtd{,-ro,-admin,-tcp,-tls}.socket
systemctl start virtqemud
systemctl start virtsecretd
systemctl start virtstoraged
systemctl start virtproxyd
This is because remote driver isn't prepared to call virStreamInData(). I mean, when designing sparse streams, virStreamInData() was meant to be local only, there's no RPC representation. Let me see if we need one or we can go with something different. Patches posted on the list: https://listman.redhat.com/archives/libvir-list/2021-December/msg00211.html Merged upstream as: c1b06f5cf0 remote_driver: Implement virStreamInData() callback 2981d1c95e rpc: Introduce virNetClientStreamInData() dd75e2e464 virStreamInData: Allow callback to not rewind the stream v7.10.0-227-gc1b06f5cf0 Pre-verified Version:
libvirt-8.0.0-1.fc35.x86_64
qemu-kvm-6.1.0-13.fc35.x86_64
Pre-verified Steps:
1.Prepare a split daemon environment:
systemctl stop libvirtd.service
systemctl stop libvirtd{,-ro,-admin,-tcp,-tls}.socket
systemctl start virtqemud
systemctl start virtsecretd
systemctl start virtstoraged
systemctl start virtproxyd
systemctl start virtnetworkd
2.Run vol-download and vol-upload according the following test case.
RHEL-115530 - [vol-download][vol-upload][sparse file] download and upload volume with --sparse param
Add another scenario: RHEL-189537 - [storage][vol-download][vol-upload][sparse file] Download and upload volume with --sparse param when source/target is block device Verified Version:
libvirt-8.0.0-1.el9.x86_64
qemu-kvm-6.2.0-3.el9.x86_64
Verified Steps:
For basic test steps:
1. Create a pool and a volume for it.
# virsh pool-create-as --name dir-pool --type dir --target /var/tmp/dir-pool
Pool dir-pool created
# virsh vol-create-as --pool dir-pool dir-vol --capacity 10485760 --allocation 10485760 --format qcow2
Vol dir-vol created
# virsh pool-refresh dir-pool
Pool dir-pool refreshed
2. Prepare a disk image and attach it to the guest.
# qemu-img create -f raw /var/tmp/dir-pool/test.img 1G
Formatting '/var/tmp/dir-pool/test.img', fmt=raw size=1073741824
# cat /tmp/test.xml
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<source file='/var/tmp/dir-pool/test.img'/>
<target dev='vdb' bus='virtio'/>
</disk>
# virsh attach-device avocado-vt-vm1 /tmp/test.xml --config
Device attached successfully
3. Write some data to the disk.
# virsh start avocado-vt-vm1
Domain 'avocado-vt-vm1' started
[in guest] #mkfs.ext4 -F /dev/vdb && mkdir -p test && mount /dev/vdb额日发ied test && dd if=/dev/urandom of=test/file bs=1M count=100 && sync
4. Vol-download the volume with --sparse option.
# virsh pool-refresh dir-pool
Pool dir-pool refreshed
# virsh vol-download test.img /var/tmp/download-sparse.raw --pool dir-pool --sparse
---Can vol-download with --sparse successfully
5. For complicated test steps, can refer to RHEL-115530 and RHEL-189537 in Links.
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 (new packages: libvirt), 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/RHBA-2022:2390 |
Description of problem: Can't vol-download volume with --sparse option in split daemon mode Version-Release number of selected component (if applicable): libvirt-7.9.0-1.el9.x86_64 qemu-kvm-6.1.0-6.el9.x86_64 How reproducible: 100% Steps to Reproduce: 1. Create a pool and a volume for it. # virsh pool-create-as --name dir-pool --type dir --target /var/tmp/dir-pool Pool dir-pool created # virsh vol-create-as --pool dir-pool dir-vol --capacity 10485760 --allocation 10485760 --format qcow2 Vol dir-vol created # virsh pool-refresh dir-pool Pool dir-pool refreshed 2. Prepare a disk image and attach it to the guest. # qemu-img create -f raw /var/tmp/dir-pool/test.img 1G Formatting '/var/tmp/dir-pool/test.img', fmt=raw size=1073741824 # cat /tmp/test.xml <disk type='file' device='disk'> <driver name='qemu' type='raw'/> <source file='/var/tmp/dir-pool/test.img'/> <target dev='vdb' bus='virtio'/> </disk> # virsh attach-device avocado-vt-vm1 /tmp/test.xml --config Device attached successfully 3. Write some data to the disk. # virsh start avocado-vt-vm1 Domain 'avocado-vt-vm1' started [in guest] #mkfs.ext4 -F /dev/vdb && mkdir -p test && mount /dev/vdb test && dd if=/dev/urandom of=test/file bs=1M count=100 && sync 4. Vol-download the volume with --sparse option. # virsh pool-refresh dir-pool Pool dir-pool refreshed # virsh vol-download test.img /var/tmp/download-sparse.raw --pool dir-pool --sparse error: cannot receive data from volume test.img error: this function is not supported by the connection driver: virStreamInData Actual results: Can't vol-download the volume with --sparse option with unsupported error Expected results: Can vol-download the volume with --sparse option Additional info: Can run successfully with virsh -c storage:///system: # virsh -c storage:///system vol-download test.img /var/tmp/download-sparse.raw --pool dir-pool --sparse