Re: [Xen-devel] [PATCH] ioemu block device extent checks

[Kevin Wolf <kwolf@xxxxxxx>]

Daniel P. Berrange schrieb:
> FYI, this patch causes massive unrecoverable data loss / corruption on
> QCow2 files. The checks themselves are OK in terms of the first level
> of bdrv_* calls from the guest. The qcow driver though calls back into
> the raw driver for performing I/O on its underlying file. The qcow 
> driver relies on this file being grow-on-demand for purposes of allocating
> new qcow sectors. The safety checks cause this allocation to fail and
> it all goes downhill from there :-(  

I just hit this problem. What's the status?  If I understand correctly,
you discussed two different solutions and as a result no fix at all got
committed.

Kevin

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