Crash recovery bugs

[IsaacKhor]

Not quite sure where the issue is, but generally to test:

• Create an image: ./imgtool create --img name --pool pone --size 10g
• Start lsvd: ./lsvd pone name
• Mount: nvme connect -t tcp --traddr 127.0.0.1 -s 1234 -n nqn.2016-06.io.spdk:cnode1 -o normal
• Mkfs: mkfs.ext4 /dev/nvme1n1
• Do some stuff, maybe run filebench
• Kill lsvd
• Re-mount
• Do some more filesystem manip, FS seems to be corrupt