[nfsv4] comments w.r.t. flex layout draft 12

[Rick Macklem <[e-mail]>]

Hi,

Overall, it looks good to me.

First off, there is one generic issue I thought I'd bring up...
- w.r.t. Kerberos...shouldn't it be talking about Rpcsec_gss instead of Kerberos,
  just in case someone uses another security mechanism someday?
- Also, I'll admit I didn't understand the last two sentences of Sec. 15.1.1.
 - Why is the metadata server generating TGTs. Is this referring to the case of
   the metadata doing I/O on the storage server? Or is this specific to some part of
   RPCSEC_GSS_V3 (which I'll admit I've never looked at;-). If the latter, just ignore
   my ignorance;-)

Now, here are the minor typo like things I spotted. (Feel free to ignore any you
disagree with):
344:   wrong credential for the deisred access will get a NFS4ERR_ACCESS
- spelling of "desired"

855:   ... Note that
856:   even if the data protocol is at least NFSv4.1, it may still be the
857:   case that there is loose coupling is in effect.  If
- one too many "is"? -->"there is loose coupling in effect."

957:   This document defines structure associated with the layouttype4 value
- "structures" (ie. plural)?

1105:   If an implementation needs a different statedid per file handle, then
- spelling of "stateid"

1166:   with a LAYOUTEGT which returns an error of either
- spelling of "LAYOUTGET"

1326:   ... While the client
1327:   may provide a hint to how many copies it wants (see Section 12), the
- "hint as to how many"
1328:   metadata server can ignore that hint and in any event, the client has
1329:   no means to dictate neither the storage device (which also means the
- "dictate either the"

1349:   (see Section 8.2.  If the client is writing to the layout segments
- closing ")"

1374:   ... The requirements for writing to a mirrored layout
1375:   segments are presented below.
- single or multiple layouts? "a mirrored layout segment" or "to mirrored layout segments"

1387:   client then MUST inform the metadata server (see Section 8.2.3.  The
- closing ")"

1472:   been done, and these data must have been committed to stable storage
- "and the data must"

2039:   modifying the syntethic uid or gid on the data file.
- spelling of "synthetic"