tree fb5e6bc18315e187ddc2c4035ee47db74d38d4ed
parent f52338fe1e8f74123a895db591d6a2a53061a2b1
author Nick Kralevich <nnk@google.com> 1423180962 -0800
committer Nick Kralevich <nnk@google.com> 1423198222 -0800

fs_mgr: error check umount calls / add retry logic

Don't silently ignore umount errors. At a minimum, log them.

Add strerror(errno) to another umount call, to make sure we get
some actionable data.

check_fs: try 5 times umounting the filesystem. It appears that
the umount is failing, perhaps because some service is opening
the file on the device or other error. Try unmounting it multiple
times in case it's a transient problem and we can recover.

Bug: 19199624
Bug: 19156134
Change-Id: I7213eb52d55116fb2419a36494d26d5e159981a7