Blkmapd is finding your iscsi devices, but can't create the mapped device for some reason. I suspect the geometry is wrong but you'd have to do some debugging to figure out exactly why. I guess we should fix or get rid of pretty_sig. Date: Thu, 2 Dec 2010 09:41:26 -0500 From: Jim Rees <rees@xxxxxxxxx> Subject: Re: [PATCH 4/5] various minor cleanups To: Benny Halevy <bhalevy@xxxxxxxxxxx> Cc: linux-nfs@xxxxxxxxxxxxxxx, peter honeyman <honey@xxxxxxxxxxxxxx> ... I am glad you are paying attention! I am aware of the shortcomings of pretty_sig(). In addition to the problems you noted, it also assumes that a signature over 8 bytes long is representable as a text string, which is not guaranteed. The code it replaced was worse. I put this in because for debugging I need to be able to follow a signature all the way from my EMC server to the devmapper. pretty_sig() simply prints the signature in a way that I can match it up with the signature on the server. I don't want to spend a lot of time on this, but I also am uneasy leaving EMC-specific code in nfs-utils, especially since it can blow up if you use it against a non-EMC server. My inclination is to remove this debugging code when I no longer need it. I guess at the very least I should put in a comment. I am open to suggestions. -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html