On Sat, Dec 27, 2014 at 05:27:38AM -0800, P.Hadadan (NW) wrote: > What's /dev/mapper/DSpace--Ubuntu--vg-root? Where is refer to? It's used most > of my storage. Can I Delete It or not, How?
/dev/mapper/* are device nodes created by the Linux kernel's "device mapper". This one appears to represent an LVM volume group. It probably does account for most of your storage, but it isn't *using* any of it; it should contain logical volumes, which in turn contain filesystems. To delete it might have results ranging from disruptive to disastrous, or might not work at all -- I've never tried. Do not manipulate DM nodes as if they were files. The Ubuntu documentation should explain how the OS uses DM and LVM to organize raw storage. -- Mark H. Wood Lead Technology Analyst University Library Indiana University - Purdue University Indianapolis 755 W. Michigan Street Indianapolis, IN 46202 317-274-0749 www.ulib.iupui.edu
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