[Nexus 7 (2013) Q&A] ibilln:
Thanks for the reply!

Oooh - did not know about how to see the /dev stuff - nice.

~ # ls -a -l /dev/block/platform/msm_sdcc.1/by-name

__bionic_open_tzdata: couldn't find any tzdata when looking for localtime!

drwxr-xr-x 2 root root 640 Dec 16 16:18 .

drwxr-xr-x 4 root root 700 Dec 16 16:18 ..

lrwxrwxrwx 1 root root 21 Dec 16 16:18 DDR -> /dev/block/mmcblk0p26

lrwxrwxrwx 1 root root 21 Dec 16 16:18 aboot -> /dev/block/mmcblk0p12

lrwxrwxrwx 1 root root 21 Dec 16 16:18 abootb -> /dev/block/mmcblk0p19

lrwxrwxrwx 1 root root 21 Dec 16 16:18 boot -> /dev/block/mmcblk0p14

lrwxrwxrwx 1 root root 21 Dec 16 16:18 cache -> /dev/block/mmcblk0p23

lrwxrwxrwx 1 root root 20 Dec 16 16:18 fsg -> /dev/block/mmcblk0p8

lrwxrwxrwx 1 root root 20 Dec 16 16:18 m9kefs1 -> /dev/block/mmcblk0p5

lrwxrwxrwx 1 root root 20 Dec 16 16:18 m9kefs2 -> /dev/block/mmcblk0p6

lrwxrwxrwx 1 root root 20 Dec 16 16:18 m9kefs3 -> /dev/block/mmcblk0p7

lrwxrwxrwx 1 root root 21 Dec 16 16:18 m9kefsc -> /dev/block/mmcblk0p28

lrwxrwxrwx 1 root root 21 Dec 16 16:18 metadata -> /dev/block/mmcblk0p29

lrwxrwxrwx 1 root root 21 Dec 16 16:18 misc -> /dev/block/mmcblk0p24

lrwxrwxrwx 1 root root 20 Dec 16 16:18 modemst1 -> /dev/block/mmcblk0p2

lrwxrwxrwx 1 root root 20 Dec 16 16:18 modemst2 -> /dev/block/mmcblk0p3

lrwxrwxrwx 1 root root 21 Dec 16 16:18 pad -> /dev/block/mmcblk0p16

lrwxrwxrwx 1 root root 20 Dec 16 16:18 persist -> /dev/block/mmcblk0p4

lrwxrwxrwx 1 root root 20 Dec 16 16:18 radio -> /dev/block/mmcblk0p1

lrwxrwxrwx 1 root root 21 Dec 16 16:18 recovery -> /dev/block/mmcblk0p25

lrwxrwxrwx 1 root root 21 Dec 16 16:18 rpm -> /dev/block/mmcblk0p13

lrwxrwxrwx 1 root root 21 Dec 16 16:18 rpmb -> /dev/block/mmcblk0p20

lrwxrwxrwx 1 root root 20 Dec 16 16:18 sbl1 -> /dev/block/mmcblk0p9

lrwxrwxrwx 1 root root 21 Dec 16 16:18 sbl2 -> /dev/block/mmcblk0p10

lrwxrwxrwx 1 root root 21 Dec 16 16:18 sbl2b -> /dev/block/mmcblk0p17

lrwxrwxrwx 1 root root 21 Dec 16 16:18 sbl3 -> /dev/block/mmcblk0p11

lrwxrwxrwx 1 root root 21 Dec 16 16:18 sbl3b -> /dev/block/mmcblk0p18

lrwxrwxrwx 1 root root 21 Dec 16 16:18 ssd -> /dev/block/mmcblk0p27

lrwxrwxrwx 1 root root 21 Dec 16 16:18 system -> /dev/block/mmcblk0p22

lrwxrwxrwx 1 root root 21 Dec 16 16:18 tz -> /dev/block/mmcblk0p15

lrwxrwxrwx 1 root root 21 Dec 16 16:18 tzb -> /dev/block/mmcblk0p21

lrwxrwxrwx 1 root root 21 Dec 16 16:18 userdata -> /dev/block/mmcblk0p30
​

Look like data is now userdata!

Using TWRP, data is mounted on mmcblk0p30 but earlier I flashed the latest CWM recovery and now using adb shell, it shows

rootfs on / type rootfs (rw)

tmpfs on /dev type tmpfs (rw,seclabel,nosuid,relatime,mode=755)

devpts on /dev/pts type devpts (rw,seclabel,relatime,mode=600)

proc on /proc type proc (rw,relatime)

sysfs on /sys type sysfs (rw,seclabel,relatime)

selinuxfs on /sys/fs/selinux type selinuxfs (rw,relatime)

tmpfs on /storage type tmpfs (rw,seclabel,relatime,mode=050,gid=1028)

tmpfs on /mnt/secure type tmpfs (rw,seclabel,relatime,mode=700)

tmpfs on /mnt/fuse type tmpfs (rw,seclabel,relatime,mode=775,gid=1000)

/dev/block/platform/msm_sdcc.1/by-name/cache on /cache type ext4 (rw,seclabel,nodev,noatime,nodiratime,data=ordered)

/dev/block/platform/msm_sdcc.1/by-name/userdata on /data type ext4 (rw,seclabel,nodev,noatime,nodiratime,data=ordered)
​

Thought I semi-understood what was going on in the partition/mounting world. Clearly not.

Anyway, thanks! Maybe I can move forward with this now.