First, thanks for the work on devmapper, LVM, and whatnot. Can't say as I use it yet, but I hope to ;) Right, anyhoo. I'd like to sub-partition a Linux MD device. Obviously it can contain a partition table, but there's no way for me to reference its segments. Enter devmapper. Attached is the entire log, from creation of the MD device to the error I get with 'lvcreate'. In short, 'lvcreate -L400M -n src willow-1' works fine if it isn't "on top of" my Linux MD array; I get the following error: Aborting. Failed to wipe snapshot exception store. Remove new LV and retry. Hopefully the log isn't too much. :) I ran the problem by Patrick Caulfield in #lvm on irc.openprojects.net, he and I went through some basic debugging (nothing I hadn't done, but just double-checking). Nothing obvious was apparent. Thanks again, and please feel free to ask for more information, if you need it.
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