Am 29.06.2011 16:25, schrieb Johannes Stezenbach:
> On Linux x86_64 host with 32bit userspace, running
> qemu or even just "qemu-img create -f qcow2 some.img 1G"
> causes a kernel warning:
>
> ioctl32(qemu-img:5296): Unknown cmd fd(3) cmd(00005326){t:'S';sz:0}
> arg(7fffffff) on some.img
> ioctl32(qemu-img:5296): Unknown cmd fd(3) cmd(801c0204){t:02;sz:28}
> arg(fff77350) on some.img
>
> ioctl 00005326 is CDROM_DRIVE_STATUS,
> ioctl 801c0204 is FDGETPRM.
>
> The warning appears because the Linux compat-ioctl handler for these
> ioctls only applies to block devices, while qemu also uses the ioctls on
> plain files. Work around by calling fstat() the ensure the ioctls are
> only used on block devices.
>
> Signed-off-by: Johannes Stezenbach <[email protected]>
Thanks, applied to the block branch.
Kevin
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