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tyrrminal's avatar
tyrrminal
Aspirant
Jul 22, 2023

Volume missing following crash and rebuild

ReadyNAS NV+ v2 running RAIDiator 5.3.12   When I woke up this morning I found that my NAS was turned off. I turned it back on and it immediately started an array rebuild (4x3 TB Toshiba disks, X-R...
StephenB's avatar
StephenB
Guru - Experienced User
Jul 22, 2023
tyrrminal wrote:

I have ssh access, but I need guidance for how to go about recovering this.

First enter

 

cat /proc/partitions

 

Check that all disks are shown.  

 

Check the disk health for thost disks using smartctl

smartctl -x /dev/sda
smartctl -x /dev/sdb
smartctl -x /dev/sdc
smartctl -x /dev/sdd

Look for

  • errors in the smart stats (pending sectors, reallocated sectors, etc)
  • failures in the SMART Extended Self-test Log section
  • errors in the SMART Extended Comprehensive Error Log 

 

Then

 

cat /proc/mdstat

 

and see what RAID arrays are assembled.

 

Last try

 

mdadm --examine /dev/sd[a-d][3-6]

 

 

You can post back with the output of these commands.

 

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