If I run stat --printf='%D', the result is "10ca70", which is correct. However, if I run stat --printf='%t %T' /mountpoint, the result is erroneously "0 0". If I instead run stat against the device directly (stat --printf='%t %T' /dev/xvdx), I get the correct result of "ca 170".
I believe the proper fix is to replace (in stat.c): out_uint_x (pformat, prefix_len, major (statbuf->st_rdev)); with: out_uint_x (pformat, prefix_len, major (statbuf->st_dev)); That is, use statbuf->st_dev instead of st_rdev, which is what the %d and %D directives use. I'm using coreutils 8.9, compiled from source, and this is the output of uname -a: Linux ip-10-39-122-238 2.6.32-276.el6.x86_64 #1 SMP Tue May 29 17:38:19 EDT 2012 x86_64 x86_64 x86_64 GNU/Linux Thanks for your time. - Tyler
