Hello, all!

 

So, I had a drive fail, I popped in a replacement and started the re-build - all good.

Then my PSU failed, mid rebuild. Replaced it, powered on the system and saw two drives (the rebuilding one and another one).

Since I have dual-parity I stopped the array, un-assigned the drives and powered down.

I replaced the two disks with two new disks and powered on.

I selected to do a data-rebuild, they are rebuilding EXCEPT - they are both showing as "unmountable"

 

My question is this, do I let the data-rebuild occur and then reiserfsck them afterward?

I'm assuming that a data-rebuild will leave the FS errors intact and render the drives unmountable anyway (but with reconstructed contents).

 

A little lost here, not sure if I've just tanked the info on those disks (which I thought the parity info would re-create).

 

Suggestions? Thanks for your time!

Diagnostics attached... also the "unmountable" message...

angband-diagnostics-20170405-0319.zip

One more pic of the data-rebuild etc...

Let the rebuild finish, then run reiserfsck.

Also keep old disks intact in the meantime.

Groovy, thanks for the quick reply!

Old disks may or may not be usable

 

 

12 hours ago, johnnie.black said:

Let the rebuild finish, then run reiserfsck.

Also keep old disks intact in the meantime.

 

Is there an option to have the reiserfsck run on the two drives without unmounting the entire array, only those two?

No.

 

 

 

 

So, when this rebuild-tree finishes it should just be able to mount the drives normally?

(fingers crossed)

No, you'll need to start the array in maintenance mode and run reiserfsck (assuming both unmountable disks are also reiser):

 

https://lime-technology.com/wiki/index.php/Check_Disk_Filesystems#Drives_formatted_with_ReiserFS_using_unRAID_v5_or_later

I did. I ran the resierfsck --rebuild-tree on the two unmountable drives while in Maintenance Mode and it succeeded. I then started the array properly and the disks show up (looks like most of the items are still there). Now, after this, ANOTHER drive crapped out and it's doing a data re-build now, this drive is ALSO "unmountable". So, I'll have to do the same steps again for this one I'm assuming. Light at the end of the tunnel though, just have to find out what it's missing. Thanks for your patience with what I'm sure are "stupid" questions. Just new to the dual-parity setup and didn't want to make a misstep. I'm assuming that when this :"data rebuild" finishes, even if I replace the "unmountable" disk with another, new one, that it will have the same FS errors replicated on it and will also show as "unmountable".

If you didn't reboot since last disk getting disabled grab and post your diagnostics

Sorry, it was too late I had already rebooted... it looks like we're back in business with some data loss. Thanks for the quick assistance and tolerance with my questions.