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authorMax Reitz <mreitz@redhat.com>2013-10-20 20:28:20 +0200
committerKevin Wolf <kwolf@redhat.com>2013-10-24 11:45:06 +0200
commiteedff66f21e542650d895801549ce05ac108278b (patch)
tree1462ef8058954cd040fe8d16218da99445a66af9 /qemu-img.c
parentcc94712b9ec93d1301eea1fb8f1b08589c7e242e (diff)
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qcow2: Restore total_sectors value in save_vmstate
Since df2a6f29a5, bdrv_co_do_writev increases the total_sectors value of a growable block devices on writes after the current end. This leads to the virtual disk apparently growing in qcow2_save_vmstate, which in turn affects the disk size captured by the internal snapshot taken directly afterwards through e.g. the HMP savevm command. Such a "grown" snapshot cannot be loaded after reopening the qcow2 image, since its disk size differs from the actual virtual disk size (writing a VM state does not actually increase the virtual disk size). Fix this by restoring total_sectors at the end of qcow2_save_vmstate. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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