On Monday, March 16 2009, Joel Granados Moreno said:
> +def zeroLvmMetadata(device):
> + """ This dds from byte 513 to 200Mb+513 of the disk.
> +
> + We assume that lvm has nothing to do with the first 512 bytes.
> + We assume that 200Mb is enough. My tests failed with 100Mb for
> + some unknown reason.
> + """
> + try:
> + fd = os.open(device, os.O_WRONLY)
> + os.lseek(fd, 513, os.SEEK_SET)
> + for i in range(200):
> + os.write(fd, "\0"*1024)
> + os.close(fd)
> + except:
> + raise LVMError("Falied to zero LVM data on %s." % device)
While maybe not a common case, this will traceback if the disk/partition
is < 200 megs in size.
Jeremy
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