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+++ This bug was initially created as a clone of Bug #1687348 +++
Description of problem:
Guest can't boot successfully when there are two bootable disk in guest
Version-Release number of selected component (if applicable):
libvirt-5.0.0-5.virtcov.el8.x86_64
qemu-kvm-3.1.0-18.module+el8+2834+fa8bb6e2.x86_64
kernel-4.18.0-74.el8.x86_64
How reproducible:
100%
Steps to Reproduce:
1. Prepare a guest with two bootable disk.
# virsh edit guest
...
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/var/lib/libvirt/images/lmn.qcow2'/>
<target dev='vda' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x07' slot='0x00' function='0x0'/>
</disk>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/var/lib/libvirt/images/rhel76.qcow2'/>
<target dev='vdb' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x08' slot='0x00' function='0x0'/>
</disk>
...
2. Start guest and check the status.
# virsh start guest
Domain guest started
# virsh list --all
Id Name State
-----------------------
256 guest running
3. Check the console of the guest by virt-manager and find the guest will hang.
...
[ 4.373732] ata2: SATA link down (SStatus 0 SControl 300)
[ 4.373982] ata1: SATA link down (SStatus 0 SControl 300)
[ 4.381651] ata4: SATA link down (SStatus 0 SControl 300)
[ 4.381896] ata3: SATA link down (SStatus 0 SControl 300)
[ 4.397653] ata6: SATA link down (SStatus 0 SControl 300)
[ 4.397898] ata5: SATA link down (SStatus 0 SControl 300)
..
Actual results:
Can't boot successfully when there are two bootable disk in guest
Expected results:
Should boot the guest successfully
Additional info:
1) Please refer to the boot.log in attachment.
2) The UUID of vg, lv are different and the following are fstab file for two images:
For lmn.qcow2:
/dev/mapper/rhel-root / xfs defaults 0 0
UUID=d6423e79-98a9-4ff9-b5fc-a6ca2356f9b5 /boot xfs defaults 0 0
/dev/mapper/rhel-swap swap swap defaults 0 0
For rhel76.qcow2:
/dev/mapper/rhel-root / xfs defaults 0 0
UUID=bd8118d2-aa31-4045-bcf5-fec6c7792e2a /boot xfs defaults 0 0
/dev/mapper/rhel-swap swap swap defaults 0 0
3) Change both the path of rhel-root and rhel-swap to UUID and start guest, it can also reproduce.
I find that the rootfs LVs are duplicated to /dev/mapper/rhel-root. So as the SWAPs /dev/mapper/rhel-swap.
Could you please replace all the path as UUID format in fstab of os image. I think the mount process cannot tell the LVs from each other.
Has already test by uuid in 3) in Additional info part.
Comment 7RHEL Program Management
2021-03-15 07:35:54 UTC
After evaluating this issue, there are no plans to address it further or fix it in an upcoming release. Therefore, it is being closed. If plans change such that this issue will be fixed in an upcoming release, then the bug can be reopened.