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Re: [Xen-devel] The two image formats called qcow
| To: | Kevin Wolf <kwolf@xxxxxxx>, Otavio Salvador <otavio@xxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] The two image formats called qcow |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Wed, 26 Mar 2008 14:02:39 +0000 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Wed, 26 Mar 2008 07:04:13 -0700 |
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| Thread-index: | AciPSg0WS6DcSvs9EdyqcwAX8io7RQ== |
| Thread-topic: | [Xen-devel] The two image formats called qcow |
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On 26/3/08 13:54, "Kevin Wolf" <kwolf@xxxxxxx> wrote: > ioemu: Fix L1 table endianess of qcow images created by tapdisk > > The qemu/ioemu implementation of the qcow format uses a big endian L1 > table. tapdisk omits the necessary conversion, so qcow images have the > wrong endianess and cannot be read by correct implementations of qcow. > > This patch detects broken tapdisk images and converts their L1 tables to > big endian when the image file is opened in ioemu for the first time. > The fixed image has a new flag EXTHDR_L1_BIG_ENDIAN set in the extended > header. > > Note that a converted image cannot be opened by tapdisk again. Can we really tack an 'extended header' into a public format like qcow? -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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