I have installed 4.14.2 and trying to detach disk from a Windows VM and unable to do so, I am able to attach a disk to running VM however detaching gives a following error -
Wed Dec 9 21:21:55 2015 [Z0][VMM][I]: VM Disk successfully attached.
Wed Dec 9 21:21:55 2015 [Z0][VM][I]: New LCM state is RUNNING
Wed Dec 9 21:24:30 2015 [Z0][VM][I]: New LCM state is HOTPLUG
Wed Dec 9 21:24:36 2015 [Z0][VMM][I]: Command execution fail: /var/tmp/one/vmm/kvm/detach_disk ‘one-17’ ‘/var/lib/one//datastores/0/17/disk.2’ ‘vdb’ ‘1’ 17 kvmnode1.local
Wed Dec 9 21:24:36 2015 [Z0][VMM][E]: Could not detach vdb from one-17
Wed Dec 9 21:24:36 2015 [Z0][VMM][I]: ExitCode: 255
Wed Dec 9 21:24:36 2015 [Z0][VMM][I]: Failed to execute virtualization driver operation: detach_disk.
Wed Dec 9 21:24:36 2015 [Z0][VMM][E]: Error detaching VM Disk: Could not detach vdb from one-17
Wed Dec 9 21:24:36 2015 [Z0][VM][I]: New LCM state is RUNNING
Powering off the VM and then detaching the disk removes the disk from sunstone however it still shows in the datastore VM folder -
/var/lib/one/datastores/0/17$ ls -lh
total 368K
-rw-rw-r-- 1 oneadmin oneadmin 1.1K Dec 9 19:09 deployment.0
lrwxrwxrwx 1 oneadmin oneadmin 58 Dec 9 19:09 disk.0 → /var/lib/one/datastores/1/e3cc8a9714df4c67109666a621e70338
-rw-rw-r-- 1 oneadmin oneadmin 364K Dec 9 19:09 disk.1
lrwxrwxrwx 1 oneadmin oneadmin 35 Dec 9 19:09 disk.1.iso → /var/lib/one/datastores/0/17/disk.1
lrwxrwxrwx 1 oneadmin oneadmin 58 Dec 9 21:21 disk.2 → /var/lib/one/datastores/1/486d8facef952a897e378069fc503cf6
I tried it on different VM and having same issue while detaching.
Do you have any suggestions on this or anyone have encountered this.
[quote=“kiranranjane, post:1, topic:1573”]
I have installed 4.14.2 and trying to detach disk from a Windows VM and unable to do so
[/quote] As far as i know, you can only detach “SD” type of disk.[quote=“kiranranjane, post:1, topic:1573”]
Powering off the VM and then detaching the disk removes the disk from sunstone however it still shows in the datastore VM folder
[/quote] It will only remove from the VM template, not delete the file from filesystem.
I am using vd - virtio disk with virtio drivers installed on the virtual machine and they support hot detach but it not working and cannot find any relevant logs related to it.
I found these errors in /var/log/libvirt logs and it seems to be related to disk detach issue :-
2015-12-09 17:40:18.341+0000: 9448: error : qemuProcessFindDomainDiskByAlias:405 : internal error: no disk found with alias
2015-12-09 17:40:19.341+0000: 9448: error : qemuProcessFindDomainDiskByAlias:405 : internal error: no disk found with alias
2015-12-09 17:40:20.341+0000: 9448: error : qemuProcessFindDomainDiskByAlias:405 : internal error: no disk found with alias
2015-12-09 17:40:20.341+0000: 9448: error : qemuProcessFindDomainDiskByAlias:405 : internal error: no disk found with alias
2015-12-09 17:40:21.356+0000: 9448: error : qemuProcessFindDomainDiskByAlias:405 : internal error: no disk found with alias
2015-12-09 17:40:22.372+0000: 9448: error : qemuProcessFindDomainDiskByAlias:405 : internal error: no disk found with alias
2015-12-09 17:40:23.388+0000: 9448: error : qemuProcessFindDomainDiskByAlias:405 : internal error: no disk found with alias
2015-12-09 17:40:24.403+0000: 9448: error : qemuProcessFindDomainDiskByAlias:405 : internal error: no disk found with alias
2015-12-09 17:40:24.404+0000: 9448: error : qemuProcessFindDomainDiskByAlias:405 : internal error: no disk found with alias
2015-12-09 17:40:25.403+0000: 9448: error : qemuProcessFindDomainDiskByAlias:405 : internal error: no disk found with alias
2015-12-09 17:40:26.419+0000: 9448: error : qemuProcessFindDomainDiskByAlias:405 : internal error: no disk found with alias
2015-12-09 17:40:27.435+0000: 9448: error : qemuProcessFindDomainDiskByAlias:405 : internal error: no disk found with alias
2015-12-09 17:40:28.450+0000: 9448: error : qemuProcessFindDomainDiskByAlias:405 : internal error: no disk found with alias
The detach was working fine until I powered off the VM and then detached both the disk, bootdisk and datadisk from the VM, changed IO and cache setting of the disk and atached it back to the VM and powered it on.
After that the detach never worked. I ran ondb fsck command and did not find any errors. So not sure what to do next
I also ran the command directly
/var/tmp/one/vmm/kvm/detach_disk ‘one-17’ ‘/var/lib/one//datastores/0/17/disk.3’ ‘vdb’ ‘1’ 17 kvmnode1.local
ERROR MESSAGE --8<------
Could not detach vdb from one-17
ERROR MESSAGE ------>8–