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[Qemu-devel] [Bug 658610] Re: Check whether images have write permission
[Qemu-devel] [Bug 658610] Re: Check whether images have write permissions
Thu, 24 Mar 2011 03:19:29 -0000
This is a legacy behavior in QEMU. There are a number of legitimate use
cases where a user may only have read access to an image and as long as
that image is mounted read-only, everything will work okay.
Virtio and SCSI will expose the read-only attribute to the guest so it
should be very obvious what's happening. Unfortunately, IDE does not
support the concept of read-only.
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Check whether images have write permissions
Status in QEMU:
Status in “qemu-kvm” package in Ubuntu:
KVM/Qemu should check whether the disk images have write permissions
in order to prevent users from getting weird IO errors in their VMs
without understanding what's happening.