[yocto] Yocto 1.8.1 - Insert USB VFAT thumb drive results in "Volume was not properly unmounted. Some data may be corrupt. Please run fsck"

[Brian Hutchinson]

> dosfsck 2.11, 12 Mar 2005, FAT32, LFN
> Starting check/repair pass.
> Starting verification pass.
> /dev/sdb1: 284 files, 60465/62894 clusters

Another update.  After seeing guys on the Raspberry Pi forums
complaining about a similar thing they hinted that dosfstools was tool
old.  Sure enough, I ran fsck.fat on the USB drive from my Ubuntu
machine and it came back with:

$ sudo fsck.fat -a /dev/sdg1
fsck.fat 3.0.26 (2014-03-07)
0x25: Dirty bit is set. Fs was not properly unmounted and some data
may be corrupt.
 Automatically removing dirty bit.
Performing changes.
/dev/sdg1: 142 files, 60465/62894 clusters


... and now the USB drive mounts without complaint but I modified my
box with a mount.sh from a previous release trying to get to the
bottom of what was going on.  Now I need to put everything back the
way it was (restore mount.sh from 1.8.1) and see if it is still a
problem.

My kernel had the USB-persist feature turned on when I first noticed
the problem so I'm not sure if left over files (not quite sure how the
feature keeps track of things) from that could cause problems.