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POSSIBLE BUG - VM would not start with more than 4 virtual disks?

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#1 Sun, 06/22/2014 - 17:34

massimo_512

POSSIBLE BUG - VM would not start with more than 4 virtual disks?

Hallo, I run Cloudmin GPL 1.680 (KVM) on an Ubuntu 12.04 LTS box. I have created an Ubuntu 12.04 VM that I use as a Samba server. I added a 5th virtual disk (1 CD and 4 qcow2 HDDs) to the samba server. With this configuration the VM would not start and System State -> Boot Messages shows the following error:

quote qemu: too many IDE bus: 2 QEMU waiting for connection on: tcp:127.0.0.1:40010,server unquote

Is this a bug? It looks like Cloudmin allows you to attach several disk to a guest machine but is then unable to manage them.

Is there a workaround? For example, can I manually change IDE interface to SCSI to overcome what seems to be a limitation with IDE interface?

Thanks

Massimo_512

#2 Mon, 06/30/2014 - 15:03

markhard

this is a KVM limit and not a bug, see:

https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Li...

Virtualized IDE devices KVM is limited to a maximum of four virtualized (emulated) IDE devices per guest.

#3 Wed, 07/02/2014 - 14:34 (Reply to #2)

massimo_512

Thank you very much for your reply. I have been using other virtualization software and never suffered this issue. I was not aware of such a limitation in KVM. I will have to fined an alternative solution. Regards,

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