FreeNas Died :( Need Help Recovering Data

[Jonj1611]

Hi,

My Freenas 7 box has been working fine for the last 6 months, when yesterday we had a power cut, now it just keeps restarting giving this error :-

Fault Trap 12 : page fault while in kernel mode

I have no idea how to fix it as I'm not really a linux person. And I was thinking of moving to Ubuntu server so this might be a good time.

Anyway, I can't access the box in anyway apart from getting to a select file system prompt thing where that any option I try just results in it booting.

The system has 2 drives, one the system drive and the other a UFS formatted data drive.

Its the data drive I need more than anything, is there anyway of mounting that in Windows and transferring the data over or anyway I can access the data on that drive bearing in mind I cannot access Freenas at all.

Further to that anytime I try logging into either drive it just says something about a bad dismount

Hope someone can help as I have been going around in circles for the last 12 hours

Regards
Jon

[b0redom]

Duff hardware looks like:

http://forums.freebsd.org/showthread.php?t=11255

[Jonj1611]

Hi,

Yeah, I saw a couple of posts like that, but also a lot more saying its not the ram, I have tried the memory with a different stick, but I do have another spare around somewhere so will try again

[Jonj1611]

Well it wasn't the memory

[Splash]

Methinks you'll struggle to pull any data from a UFS volume from within Windows - could you boot a livecd and do something like

sudo mount -r -t ufs -o ufstype=ufs2 /dev/sdf1 /media/freenasdrive/

?

You'd still need somewhere to copy the data to, but I think that's your best bet.

[Jonj1611]

I couldnt get it to boot into safe mode or the loader options. What I have done for the moment is disconnected the UFS data drive and in the middle of installing Ubuntu server, when thats all configured will reconnect the data drive and hopefully be able to mount it, Ubuntu is set up with Samba, so hopefully I will be able to access the drive, copy the data I need, the reformat the drive with the native Ubuntu filesystem, then copy the data back.

Going on a wing and a prayer here I can tell you lol

[Jonj1611]

Well that didnt go too well, tried Ubuntu and it worked but it seems to want to mount the storage drive when it feels like it. Half the pc's dont even see the share, the other half do.

All very strange so going back to Freenas 7, however the storage drive is formatted ext4. Does freenas 7 support/mount/read/write it?

[b0redom]

No it won't work with ext4. You'll need to put some more disks in there and copy the data across.

[Jonj1611]

I am backing up the system now.

I did get a reply on the Freenas forum from the admin that said Freenas 7 does support ext3 and ext 4 but in ext2 format, what the hell that meant I dont know.

[peterb]

ext 2, 3, and 4 are all related. Ext3 is ext2 with journaling enabled, which makes it more resilient in the event of (say) power failure.

ext4 is the newest version and is implemented by many distros, so I am surprised you had problems with ubuntu. You may have to mount the ext4 volumes manually (using the mount command - something like

mount -t ext4 your_volume your_mountpoint

man mount will give you more details

For more details about ext4 try this

http://docs.redhat.com/docs/en-US/Re...esys-ext4.html