### Please describe the problem.

git annex info  crashes in some directories of the NFS mounted partition but not in the others

[[!format sh """
# If you can, paste a complete transcript of the problem occurring here.
# If the problem is with the git-annex assistant, paste in .git/annex/daemon.log

yoh@rolando:/inbox/BIDS/Meng/Meng/1005-faceperception$ git annex info

git-annex: waitToSetLock: resource exhausted (No locks available)
failed
git-annex: info: 1 failed
yoh@rolando:/inbox/BIDS/Meng/Meng/1005-faceperception$ cd -
/inbox/BIDS/Gobbini/Matteo/1002-faceangles

yoh@rolando:/inbox/BIDS/Gobbini/Matteo/1002-faceangles$ git annex info
repository mode: indirect
trusted repositories: 0
semitrusted repositories: 5
	00000000-0000-0000-0000-000000000001 -- web
 	00000000-0000-0000-0000-000000000002 -- bittorrent
 	8ffcc6d4-1288-45cb-8e5b-0fa13a22c8c5 -- mvdoc@falkor:/srv/dbic.datalad.org/www/Gobbini/Matteo/1002-faceangles
 	b7872847-80ac-47d6-a712-fa695b24e85e -- yoh@rolando:/inbox/BIDS/Gobbini/Matteo/1002-faceangles [here]
 	db79e407-569d-43b4-8c39-c50f0eeb1fdd -- mvdoc@smaug:/mnt/btrfs/dbic/inbox/face-angles/Gobbini/Matteo
untrusted repositories: 0
transfers in progress: none
available local disk space: 30.19 terabytes (+1 megabyte reserved)
local annex keys: 40
local annex size: 5.21 gigabytes
annexed files in working tree: 40
size of annexed files in working tree: 5.21 gigabytes
bloom filter size: 32 mebibytes (0% full)
backend usage: 
	SHA256E: 40

yoh@rolando:/inbox/BIDS/Gobbini/Matteo/1002-faceangles$ git annex version
git-annex version: 6.20170101+gitg93d69b1-1~ndall+1

"""]]


so this one was a run from within singularity neurodebian environment on a centos box. but the same behaviour is if ran using 6.20161231-gc8eeb17da  standalone build ran under CentOS natively.

[[!meta author=yoh]]
[[!tag projects/datalad]]

> It seems this was probably not a bug in git-annex, as explained in my 
> comments, so [[done]] --[[Joey]]
