client ro

root@(none):~# cat /proc/mounts
rootfs / rootfs rw 0 0
sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
udev /dev devtmpfs rw,relatime,size=10240k,nr_inodes=128007,mode=755 0 0
devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
tmpfs /run tmpfs rw,nosuid,noexec,relatime,size=103468k,mode=755 0 0
/dev/nbd0 / squashfs ro,relatime 0 0
tmpfs /run/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k 0 0
tmpfs /run/shm tmpfs rw,nosuid,nodev,noexec,relatime,size=206920k 0 0
tmpfs /tmp tmpfs rw,nosuid,nodev,relatime,size=206920k 0 0

root@(none):~#  cat /proc/cmdline
ro initrd=initrd.img root=/dev/nbd0 ip=dhcp BOOT_IMAGE=vmlinuz BOOTIF=01-52-54-00-af-ad-96