[GH-ISSUE #316] Cache and io #249

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opened 2026-02-27 16:38:35 +03:00 by kerem · 1 comment

kerem commented

2026-02-27 16:38:35 +03:00

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Originally created by @amarc on GitHub (May 23, 2014).
Original GitHub issue: https://github.com/retspen/webvirtmgr/issues/316

Hello,

is there a way to add cache and IO mode to guests ? I tried something like:

driver name='qemu' type='qcow2' cache='none' io='native'

driver name='qemu' type='raw' cache='none' io='native'

But I get error message upon clicking "Start" :

internal error: process exited while connecting to monitor: qemu-system-x86_64: -drive file=/home/kvm/vyatta-raw.img,if=none,id=drive-virtio-disk0,format=raw,cache=none: could not open disk image /home/kvm/vyatta-raw.img: Invalid argument

I tried qcow2 and raw images and yes /home/kvm/... is existing.

Originally created by @amarc on GitHub (May 23, 2014). Original GitHub issue: https://github.com/retspen/webvirtmgr/issues/316 Hello, is there a way to add cache and IO mode to guests ? I tried something like: driver name='qemu' type='qcow2' cache='none' io='native' driver name='qemu' type='raw' cache='none' io='native' But I get error message upon clicking "Start" : internal error: process exited while connecting to monitor: qemu-system-x86_64: -drive file=/home/kvm/vyatta-raw.img,if=none,id=drive-virtio-disk0,format=raw,cache=none: could not open disk image /home/kvm/vyatta-raw.img: Invalid argument I tried qcow2 and raw images and yes /home/kvm/... is existing.

kerem closed this issue

2026-02-27 16:38:36 +03:00

kerem commented

2026-02-27 16:38:36 +03:00

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@retspen commented on GitHub (May 23, 2014):

Libvirt show this error WebVirtMgr only transmit the error. About IO cache try something like this:

<disk type='file' device='disk'>
      <driver name='qemu' type='qcow2' cache='none' io='native'/>
      <source file='/var/lib/libvirt/images/server.img'/>
      <target dev='vda' bus='virtio'/>
</disk>

@retspen commented on GitHub (May 23, 2014): Libvirt show this error WebVirtMgr only transmit the error. About IO cache try something like this: ``` <disk type='file' device='disk'> <driver name='qemu' type='qcow2' cache='none' io='native'/> <source file='/var/lib/libvirt/images/server.img'/> <target dev='vda' bus='virtio'/> </disk> ```

kerem referenced this issue

2026-02-27 16:38:58 +03:00

[GH-ISSUE #472] [feature req] WebVirtMgr on /manage #351