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3 disks unmountable, dual parity setup, what can I do?

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Ok so here is what happened:
1. First disk down I dropped my phone and it just happened to smack the disk release for the caddy (couldn't do that again if i tried), that got me my first red X.

2. Second disk, I accidentally pulled a drive I thought was in unassigned devices (stupid mistake)

3. I had my drives IN another array and the disk got wiped (yeah that sucked)

 

So, disks 1 and 2 with red x's, those are technically probably fine, what I cant figure out is how to make unraid think that.

What can I do?

  • Community Expert

Diags after array start please.

  • Author
1 hour ago, JorgeB said:

Diags after array start please.

I was able to repair the wiped disk to the point of being able to grab files off. I’m going to do that first. Everything is in lost&found though so it’s requiring a lot of scripting to get everything. 

  • Author
12 hours ago, JorgeB said:

Diags after array start please.

Array started in maintenance mode, if i start it regular it will begin rebuilding one of the disks. Let me know if we have to bite that bullet. Thanks for your help btw.

 

tower-diagnostics-20240726-2235.zip

  • Community Expert

It must be in normal mode, you can unassing the disk to not start a rebuild, or just cancel

  • Author
7 hours ago, JorgeB said:

It must be in normal mode, you can unassing the disk to not start a rebuild, or just cancel

Ok this time in regular mode. Thank you for reviewing it!

 

 

tower-diagnostics-20240727-0909.zip

  • Community Expert

O only see two unmountable disks, check filesystem for emulated disks 1 and 9, run it without -n

  • Author
1 hour ago, JorgeB said:

O only see two unmountable disks, check filesystem for emulated disks 1 and 9, run it without -n

Disk 5 has been wiped (it’s not right, but like I saw you point out in another post it’s not filesystem integrity aware). 
 

what is -n? How do I do that?

  • Community Expert
3 hours ago, whoopn said:

Disk 5 has been wiped

What do you mean wiped? It's still showing mostly full:

 

Filesystem      Size  Used Avail Use% Mounted on
/dev/md5p1      3.7T  3.1T  642G  83% /mnt/disk5

 

 

3 hours ago, whoopn said:

what is -n? How do I do that?

For the repair options, see the link above.

  • Author
1 hour ago, JorgeB said:

What do you mean wiped? It's still showing mostly full:

 

Filesystem      Size  Used Avail Use% Mounted on
/dev/md5p1      3.7T  3.1T  642G  83% /mnt/disk5

 

 

For the repair options, see the link above.

 

Full yes, but an absolute mess, I performed xfs_repair on it and b/c it lost a lot of the inode data i just put everything in lost and found.

Ok running xfs_repair first WITH -n to see what we're dealing with. Bad superblock, its looking for the secondary one now. I'll try the repair on Disk 1 first.

 

Thanks for your help

What should I do after we've run through the xfs_repair?

  • Community Expert

After repairing both disks post new diags after array start

  • Author
8 hours ago, JorgeB said:

After repairing both disks post new diags after array start

So, both 1 and 9 have zero superblocks. Both primary and secondary are gone. It did find a candidate but ultimately didn’t. 
 

Are these disks kind of cooked and I should just rebuild one at a time?

  • Community Expert

That suggests parity is not valid, if you still have the old disks see if they mount with UD.

  • Author

I think the array might be toast, but I did manage to get like 99% of the data over to my zfs array.

I rebuilt disk 1, but its not mountable, here are the diagnostics. I'm free to do just about anything I need to to this array, so if there is a chance we can get a little dangerous and make it work again I'm game. The most important data (photos) are all safe and sound on two separate arrays plus backed up to the cloud.
 

tower-diagnostics-20240804-1302.zip

  • Author
On 8/4/2024 at 4:05 PM, JorgeB said:

Check filesystem on disks 1 and 9, run it without -n

Both eventually responded with "Sorry, could not find valid secondary superblock Exiting now."

At least it said it was sorry.

Anything else we should try or should I just scoop these into my zfs array?

  • Community Expert

Post the command you are using to run that.

  • Author
18 hours ago, JorgeB said:

Post the command you are using to run that.

xfs_repair /dev/sdX

Edited by whoopn

  • Author
30 minutes ago, whoopn said:

xfs_repair /dev/sdX

I'm a dummy, I'm doing it correctly now.

  • Community Expert

Make sure you are using the md device, not sdX1, or parity will be invalided.

  • Author

Parity is already messed up.  
 

I did the partition so it could actually get me access to the files. It was able to fully repair one but the other it put it all into lost and found. I’m about done getting the last of my files off. This array isn’t going to be saved. 
 

Thank you for your help! I really appreciate you taking your time to help me. 

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