[Qemu-devel] [Bug 658610] Re: Check whether images have write permissions

[Anthony Liguori]

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.

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/658610

Title:
  Check whether images have write permissions

Status in QEMU:
  New
Status in “qemu-kvm” package in Ubuntu:
  Confirmed

Bug description:
  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.