K 10
svn:author
V 4
ngie
K 8
svn:date
V 27
2017-04-14T19:41:48.164583Z
K 7
svn:log
V 1019
savecore: fix space calculation with respect to `minfree` in check_space(..)

- Use strtoll(3) instead of atoi(3), because atoi(3) limits the
  representable data to INT_MAX. Check the values received from
  strtoll(3), trimming trailing whitespace off the end to maintain
  POLA.
- Use `KiB` instead of `kB` when describing free space, total space,
  etc. I am now fully aware of `KiB` being the IEC standard for 1024
  bytes and `kB` being the IEC standard for 1000 bytes.
- Store available number of KiB in `available` so it can be more
  easily queried and compared to ensure that there are enough KiB to
  store the dump image on disk.
- Print out the reserved space on disk, per `minfree`, so end-users
  can troubleshoot why check_space(..) is reporting that there isn't
  enough free space.

MFC after:	7 weeks
Reviewed by:	Anton Rang <rang@acm.com> (earlier diff), cem (earlier diff)
Tested with:	positive/negative cases (see review); make tinderbox
Sponsored by:	Dell EMC Isilon
Differential Revision:	D10379

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