Weired issue with a N9: /home gone
 

Hi guys. I'm have a N9 that appeared to have commited suicide: all data from /home just mysteriously dissapeared. I wonder what happened. Did anyone of you expected this issue, and (better) did anyone of you recovered from it ?

Re: Weired issue with a N9: /home gone
 

Alright, at least for MyDocs, I brought it back by plugging it as a Mass storage and unplugging it + rebooting. But for /home, it is still missing. Investigating.

Re: Weired issue with a N9: /home gone
 

Right: looks like /home is corrupted. Now do anyone know how to run a fsck on /home ...

Re: Weired issue with a N9: /home gone
 

The relevant fsck is /sbin/e2fsck, and the device mounted to /home is /dev/mmcblk0p3.

Hope that's some help, at least.

Re: Weired issue with a N9: /home gone
 

You cannot fsck a mounted fs. And you cannot umount /home.
So probably do (from heart, so please cross check):
dd if=/dev/mmcblk0p3 of=/home/user/MyDocs/p3.img
fsck /home/user/MyDocs/p3.img

If some error pop up, you may correct them on the img file. But to correct them on device you would need to bring it back to /dev/mmcblk0p3. I am unsure if
dd of=/dev/mmcblk0p3 if=/home/user/MyDocs/p3.img
would work..
Maybe better try that with a Linux system and all partitions mounted to that PC (e.g. via ubiboot. Or are there other rescue systems?).

Re: Weired issue with a N9: /home gone
 

Did you check that your home is actually mounted?
Happened to me once that, well it was my own fault really as I messed up some boot related things, and /dev/mmcblk0p3 (/home) was not mounted.
What happens then, when the device boots it will create a new /home for you on your root device, and copy the skeleton files to it from /etc.
It will look like your device had been wiped clean, but the old stuff stil exists there on /dev/mmcblk0p3

As for rescuing the device, there are at least 3 differnt rescue kernels but ubiboot is the easiest to use and most versatile.
Just load up ubiboot kernel without flashing it, and telnet to the device & run fsck on filesystems.
(or fsck them on USB mount if you have linux)

Re: Weired issue with a N9: /home gone
 

Don't think so: in /home, lost+found if full of stuff, running a e2fsck on /dev/mmcblk0p3 gives me tons of errors.

Great, that's exactly what I was searching for !

Re: Weired issue with a N9: /home gone
 

Sorry for this silly question but can you tell me the procedure to load the kernel without flashing it.

Re: Weired issue with a N9: /home gone
 

When you load up a kernel without flashing, start like you would start flashing, (meaning, device switched off). You do not need to specify the emmc or --flash-only parameters on the command line, just enter the kernel name:

"sudo flasher -k <name_of_kernel> -n <name_of_initramfs_if_desided> -l -b"